The grey paste is called solder paste and we are talking real solder paste not solder flux paste that is sometimes called solder paste. The difference is that real solder paste contains metallic powder in a flux compound while solder flux does not. Real solder paste should indicate the metallic compound such as silver, copper and other metals in their periodic label labels like Au, and others. The hot air gun is part of a 'reflow station'. granted, it is possible to use a hair dryer or heat gun but those have a much wider effect area due to the obviously bigger or wider 'nozzle'. In addition, if they are not temperature controlled, then you can face problems... especially heat guns without temperature control while a hair dryer would most likely not get as hot but might be hot enough for the solder paste to melt. Note: solder paste tends to melt at a little bit lower temperature than solder wire. This is why you don't need to get excessive with heat. Alternatives to using the hot air tool is to use a convection oven with temperature controls that you can set that would be under 300 degrees. Basically that is what the industrial equipment is known as a "reflow oven" which is basically a convection oven.Some are infrared or vapour phase ovens en.wikipedia.org/wiki/Reflow_oven Occassionally additional flux is used with solder paste. With reflow method, you don't need ultra steady hands just ensure you have solder connecting the pins of the components to the solder pads, via, etc. while assuring you correct any bridging of pins so that you don't create a short where you don't want it once you apply electricity to the circuit board. Lets keep in mind that we are looking as a really component with a high resolution camera zoomed into the component. Even what is a relatively stable hands can look like it is very shaky but lets remember that you are looking at something 10x10x10 (3d space) or 1000x magnification to the real scale so movements are exaggerated by 1000x. Try soldering with a camera in your way. It's not that simple.
sorry for the late response... the white pen is solder flux... (Stanol minifluxer 33) i removed the solder bridge simply by adding solderflux and contact a short time with the soldertip... (not shown in the video) i did the video only for testing and showing my 1st experiences with solderpaste...... i see that many people like this kind of videos so i plan to do more in the future but on the other side those many negative comments makes me sad and demotivated to show and do more stuff... and again.. this was my 1st experience with solderpaste normaly i use hotair for desoldering and for soldering i use a solderiron with special soldertip thanks for watching and understanding :-)
ramiretz Myself i have problem soldering a fuse on a Ps2 motherboard. They look like this: www.tt-store.com/images//PS2/SMD%20Fuse%20for%20PS2%20(10%20pcs%20pack).JPG But any fuse in that size would be good. :D If you have time
D3lt4forc3 aaah ok .... simply smd parts .... hmmmm i will see if i find some old smd part arround and i will do a video... vid with solder iron ? or with hotair ?
Wow! Thank you for post this movie. I made a lot of wire wrapping and electronic soldering for digital stuff up the middle of 1980s when (then rare) surface mounting boards were considered "unfixable"... I never more cared on that, so this video was a great surprise for me. Thank you to bring me up to XXI century!I
Love hot air soldering, it's so interesting to watch the paste melt into shiny metal. Reflow ovens are also fun when the temperature finally hits the reflow temp and you hear that instantaneous crackle sound at the instant of reflow.
absolute best answers !!!! 1st i used it to practice !!!! 2nd this is a special IBM ram, wich u cant buy anymore 3rd i used the 852 reflow station ;) thank you !!
in my older posts i answered this question a few time ! warming and cooling down the chips and look at the memtest when it fails..... then u know wich one is defective
That is a pretty stellar job!! I also liked the heat shrink on the alligator clips (gotta start doing that). For a while, I thought you might accidentally re-flow the decoupling caps but it all turned out flawless.
hello ramiretz... what did you use to clean up the remaining solders on board? i mean what's the type of that wire and is that a liquid flux pen? and what is the syringe type thing you applied at last?
I seem to notice that most videos remove the existing solder from the pads on the boards. In my experience, I don't do this since I'm just going to add some back if needed and I think it is just an extra step that might ruin the PCB. I think it helps the chip lay flat and orient itself when initially soldering but I like to use a complete melt of the chip area so that the solder can "suck" the chip into position as it wets the leads.
Hello mate, I need to lift up one pin from an MCU circuit board! How do I do that? I need to solder it back after... reading it! Heat it up and then with something? Could you do a video for this please? I cant find any on YT! Thanks
When reworking the PCB with the hot air station, I saw at least 3 solder bridges across pins. How did you remove them? Did you use a soldering iron? In that case, this video is incomplete.
Loved your video, im just starting on SMD soldering and desoldering and found this very helpful.. The project im working on uses normal and SMD components... :)
Ramiretz: dónde puedo obtener todo eso para poder practicar esa soldadura, y que clase de líquido usas para soldar, el cobre que absorbe el estaño y con que lo calientas para no dañar la parte electrónica. :-)
So the solder paste actually finds its way to the pads and chip legs? I always thought the paste had potential to short contacts out. This looks eay, maybe you can set the chips and bake the board to set the chips?
excuse me ... someone could explan what's the stuff in 02:05 , what is that ? the stuff that use to clean the pad ? I wanna buy it but I don't know what it is ....
normal solderwick, stannol minifluxer 33 pen, and simple standard solderpaste hotair nozzle at 380degree i used way too much solderpaste, but ok it was my very first try ;)
Do you mind sharing in details what type of equipment, flux, solder, paste, etc.. you used in this video.. I have an a10 all winner Chinese made android tablet - which technically supports 1gb of RAM, but the model i have only comes with 512mb (128 X 4). I have plenty of compatible RAM chips - i'd like to experiment upgrading ram.. thanks
do you worry about damage the pins on board when moving the desoldering wick? Also you never cut the used wick, so does that worry you for too much solder on the wick? Thanks
No I don't worry.. when you are not use much temperature and be very gentle when moving the wick it's not harming the pins.... I don't cut the wick because it will left a tiny bit of solder on the pins this way and it's easyer to resolder then
Very nice job friend , Actually i had never seen all these products you are using , all i knew was the standard soldering lead & the blower/soldering iron - can you tell me the products you used - in-case if i want to order it online from somewhere ! , thanks
Well, solder isn't actually pure tin. I don't know what type of paste he is using, but i.e. 60/40 solder has 60% tin and 40% lead. That lowers its melting point.
@@MrAjmal2010 If you click again in the thumbs down, the video will be un-disliked. Or, if you click the thumbs up button, your dislike will be convert to a like.
Cool, been wanting to get a hot air station and wasn't sure how hard it was. Looks like you had a couple shorted pins that were fixed when you cut to the end. How did you fix them just more heat?
this was my very first try with solderpaste and hotair... i used too much solderpaste thats why i had some shorts but its easy to remove them... simply used solder wick if you try it usw not to much amount of solderpaste and everything goes very easy :D
Hello there, I have a hot hair gun but find that sometimes other components fly off with the air pressure. How do you do it without losing smd capacitors? Do you use very low air pressure? I need to practice.
+FREEDOM What they used to do was print a tiny dot of epoxy under the the component. Now, they use a stencil and a squeegee for the solder paste. In most cases, the SMD component will actually align itself to the pads, due to the forces of surface tension. The solder mask helps too.
@@kafakoparan does it do something like ohming to zero? With all those pins, what grouping is a pass through for the single segment or group of internal segments. Is it top left bottom right? Or is there like several groupings?
soldering and desoldering is made with hotair so whats the point ??? i cleaned the solderpads with the iron to show after how to resolder with hotair only... so desoldering and solder is only made with hotair only.....
no put a boot CD with memtest in the computer and start the memtest... when the RAM Chip gets hot you can se it Fails on the memtest calculations, then take a ice spray and cool down every single chip as soon as you see the memtest calculations are getting ok again you found the defective chip ... takes a little time but its worth the effort especial on old ram clusters witch are not available anymore like the one shown in the video
Can you detail this process of identifying the bad chip or point me to some documentation about it? Nice work, I have lots of bad memory sticks but have never tried to repair one from the others because of not being able to know witch one(s) is/are the bad chip(s) on it...
When you wick off all the old solder, you're throwing away perfectly good solder that could have been used to tack your device down, greatly simplifying the job.
Not really. The old solder is lead-free and is harder to work with, requires higher temperatures and is more brittle too. Leaded solder requires lower temperatures and you do the work quicker than you would with the lead-free. You just need a quality leaded solder wire and all is good.
Thank you for no music!
😂😂😂😂😂
The solder gun was music to my ears.
Tittle of the song: My silent....😂🤣🎵🎶🎹🎺🎸🎤🎧
Sir you've restored my faith in hot air gun for smd resoldering. This is one of the cleanest jobs I've seen.
this dude sucked. I'm new and better than that
I like the heatshrink on the alligator clips.
Will copy immediately.
+Mick M I was thinking that too! ;-)
me too ;)
What was you using before? You can also put it on the moving parts of the helping hands and it helps hold the arms in place better
@HECTOR CONTRERAS l
The grey paste is called solder paste and we are talking real solder paste not solder flux paste that is sometimes called solder paste. The difference is that real solder paste contains metallic powder in a flux compound while solder flux does not. Real solder paste should indicate the metallic compound such as silver, copper and other metals in their periodic label labels like Au, and others.
The hot air gun is part of a 'reflow station'. granted, it is possible to use a hair dryer or heat gun but those have a much wider effect area due to the obviously bigger or wider 'nozzle'. In addition, if they are not temperature controlled, then you can face problems... especially heat guns without temperature control while a hair dryer would most likely not get as hot but might be hot enough for the solder paste to melt. Note: solder paste tends to melt at a little bit lower temperature than solder wire. This is why you don't need to get excessive with heat. Alternatives to using the hot air tool is to use a convection oven with temperature controls that you can set that would be under 300 degrees. Basically that is what the industrial equipment is known as a "reflow oven" which is basically a convection oven.Some are infrared or vapour phase ovens
en.wikipedia.org/wiki/Reflow_oven
Occassionally additional flux is used with solder paste. With reflow method, you don't need ultra steady hands just ensure you have solder connecting the pins of the components to the solder pads, via, etc. while assuring you correct any bridging of pins so that you don't create a short where you don't want it once you apply electricity to the circuit board. Lets keep in mind that we are looking as a really component with a high resolution camera zoomed into the component. Even what is a relatively stable hands can look like it is very shaky but lets remember that you are looking at something 10x10x10 (3d space) or 1000x magnification to the real scale so movements are exaggerated by 1000x. Try soldering with a camera in your way. It's not that simple.
rick balkins you're overthinking it. he did it well and it works. that's all that matters.
Hey Rick, can you share link to buy some of that real solder paste?? thanks
300 Fahrenheit, or Celsius?
Still trying to find who asked you
Calm down rick
sorry for the late response...
the white pen is solder flux... (Stanol minifluxer 33)
i removed the solder bridge simply by adding solderflux and contact a short time with the soldertip... (not shown in the video)
i did the video only for testing and showing my 1st experiences with solderpaste......
i see that many people like this kind of videos so i plan to do more in the future
but on the other side those many negative comments makes me sad and demotivated to show and do more stuff...
and again.. this was my 1st experience with solderpaste
normaly i use hotair for desoldering and for soldering i use a solderiron with special soldertip
thanks for watching and understanding :-)
Could you please upload a video showing how to solder a 2,3 amps fuse? Or just any fuse to a motherboard. Thanks!
D3lt4forc3
wich type of fuse ?
ramiretz Myself i have problem soldering a fuse on a Ps2 motherboard. They look like this: www.tt-store.com/images//PS2/SMD%20Fuse%20for%20PS2%20(10%20pcs%20pack).JPG
But any fuse in that size would be good. :D If you have time
D3lt4forc3
aaah ok .... simply smd parts .... hmmmm
i will see if i find some old smd part arround and i will do a video...
vid with solder iron ? or with hotair ?
ramiretz Think you could do it? If you got time of course... Anyways thank you.
Wow! Thank you for post this movie. I made a lot of wire wrapping and electronic soldering for digital stuff up the middle of 1980s when (then rare) surface mounting boards were considered "unfixable"... I never more cared on that, so this video was a great surprise for me. Thank you to bring me up to XXI century!I
Thank you for the nice comment :-)
What kind of sorcerry is this?!
This is really a good job...it looks like its sometimes is better to do it with hot air than with soldering.
I wish you mentioned HOW to safely discharge the capacitors. Not everyone knows how to do that safely. Otherwise good stuff!
oh yes you are right ! thank you for this hint...
You could teach that too just type it so we can learn usefull things
This comment section has me intrigued.
Love hot air soldering, it's so interesting to watch the paste melt into shiny metal. Reflow ovens are also fun when the temperature finally hits the reflow temp and you hear that instantaneous crackle sound at the instant of reflow.
have i ever said i am a professional ???
this was my first try with solder paste.....
i removed the bridges as you can see in the end...
Sir last me apane konsa solution paste use kiya tha
absolute best answers !!!!
1st i used it to practice !!!!
2nd this is a special IBM ram, wich u cant buy anymore
3rd i used the 852 reflow station ;)
thank you !!
in my older posts i answered this question a few time !
warming and cooling down the chips and look at the memtest when it fails..... then u know wich one is defective
That is a pretty stellar job!! I also liked the heat shrink on the alligator clips (gotta start doing that). For a while, I thought you might accidentally re-flow the decoupling caps but it all turned out flawless.
What is the min melt point of the solder paste?
That is called precision Job . Well done man
many many thanks for your nice comment :-) it was my very first try with hotair and solderpaste
Great Video! I am looking for the suction cup tool. Any advice where I can order?
Can you please give the details of the tools, I really liked the tool that you used to lift and drop the chip.
its an old AOYUE-939 vacuum tool ->
ua-cam.com/video/fEVIuOZ7VMU/v-deo.html
hello ramiretz... what did you use to clean up the remaining solders on board? i mean what's the type of that wire and is that a liquid flux pen? and what is the syringe type thing you applied at last?
I seem to notice that most videos remove the existing solder from the pads on the boards. In my experience, I don't do this since I'm just going to add some back if needed and I think it is just an extra step that might ruin the PCB. I think it helps the chip lay flat and orient itself when initially soldering but I like to use a complete melt of the chip area so that the solder can "suck" the chip into position as it wets the leads.
Hello mate, I need to lift up one pin from an MCU circuit board!
How do I do that?
I need to solder it back after... reading it!
Heat it up and then with something?
Could you do a video for this please?
I cant find any on YT!
Thanks
NIce vid! What is that "white pen" tool you used @1:10 and what brand of grey soldering paste you use? Thanks.
When reworking the PCB with the hot air station, I saw at least 3 solder bridges across pins. How did you remove them? Did you use a soldering iron? In that case, this video is incomplete.
Thank you so much. The best video for soldering. So many questions have been answered with elegant precision.
thank you very much for those words :) very motivating
What's that chip suction cup tool called that comes into play at 0:25s ?
Hola, disculpa amigo, que camara de video utilizaste para el video? Gracias.
Can you provide settings for the tip and hit air gun?
What kind of soldering lead used like a paste ??. Its awsome
Hi there can you please tell me what did you use exactly the tolls,paste etc.. the gun not need i have one too. thank you waiting for your reply
Loved your video, im just starting on SMD soldering and desoldering and found this very helpful.. The project im working on uses normal and SMD components... :)
What is the name of white paste that use to soldering
what is the commercial name of the gel applied between chip & board?
what is that gray thing you soldier at end ?
Soldier Paste - Lehim Akı olarak geçer.
Ramiretz: dónde puedo obtener todo eso para poder practicar esa soldadura, y que clase de líquido usas para soldar, el cobre que absorbe el estaño y con que lo calientas para no dañar la parte electrónica. :-)
What kind of sorcery is this?
It's called soldering.
Would it be easier to add some low melt solder to the pins before using the hot air to desolder? Maybe some flux?
quick chip it the easiest way but expensive... but with the hotair its not a problem, preheat the pcb and then it goes very easy :-)
which is the temperature for used hot air? and which is the air-flow set?
So the solder paste actually finds its way to the pads and chip legs? I always thought the paste had potential to short contacts out. This looks eay, maybe you can set the chips and bake the board to set the chips?
I liked your steady work. please, what is name of that thing u used to suck the RAM? I mean the RAM from the board?
excuse me ... someone could explan what's the stuff in 02:05 , what is that ? the stuff that use to clean the pad ? I wanna buy it but I don't know what it is ....
FLUX... its flux in a pen
I could never have the patience for that, but very good jobs and looks awesome seeing it step by step.
And one more thing, is soldering "flux" needed? Haven't figured out what it's good for ;)
Very nice! What is that marker you used? What temperature C was the heat gun? What type of paste?
The Marker is FLUX ! Stannol Mini Fluxer 33 - Temperature on nozzle is 380 - Paste is simple noname Solderpaste in a Syringe
How does one determine which of the memory modules is faulty?
yes, liquid flux, in a "flux pen" for ease of application, so may look unfamiliar
Is that heat shrink tube on your alligator clips?
What is that grey sludge called. I'd like to test it out.. I never worked with anything else than regular led free solder and flux.
It's simple cheap smd solder paste... Give it a try
thanks, do the cheap hot air guns work ok? ie the chinese ones on ebay?
what temperature desldering?
320
What's the name of the thing you use to grab the chip?
What is Marker brand name ?...I like this black and White...like a Jing-Jang. Get it ?
For which purpose the white paste is needed, which you added just before soldering new chip?
on a PCB with multiple RAM chips, how can you tell which one is faulty ?
I liked your video but I'm curious about what material you soldered
normal solderwick, stannol minifluxer 33 pen, and simple standard solderpaste hotair nozzle at 380degree i used way too much solderpaste, but ok it was my very first try ;)
Did you desolder the chip and put the same chip back? Why? Did you test it to see if it works? Thanks
Amazing work! I gotta get me a rework station now to fix my JVC XEye, quick question, what do you call that chip lifter tool you used? It's awesome!
And how do you put away the "snot" between some pins?
Do you mind sharing in details what type of equipment, flux, solder, paste, etc.. you used in this video.. I have an a10 all winner Chinese made android tablet - which technically supports 1gb of RAM, but the model i have only comes with 512mb (128 X 4). I have plenty of compatible RAM chips - i'd like to experiment upgrading ram.. thanks
Wow impressive work. Surprised to see the paste turning into shiny tin-lead.
hi, 1) what temperature was used for this procedure? and 2) how much airflow force was used in the solderin station?
380degree at the nozzle ...2/4 of the airflow
depends on the chipset.... if the chipset support more ram yes.... but u have to find also the right RAM chips for the upgrade....
do you worry about damage the pins on board when moving the desoldering wick? Also you never cut the used wick, so does that worry you for too much solder on the wick? Thanks
No I don't worry.. when you are not use much temperature and be very gentle when moving the wick it's not harming the pins.... I don't cut the wick because it will left a tiny bit of solder on the pins this way and it's easyer to resolder then
Very nice job friend , Actually i had never seen all these products you are using , all i knew was the standard soldering lead & the blower/soldering iron - can you tell me the products you used - in-case if i want to order it online from somewhere ! , thanks
Um... To melt tin you need at least 250C. Where you took the solder?
Well, solder isn't actually pure tin. I don't know what type of paste he is using, but i.e. 60/40 solder has 60% tin and 40% lead. That lowers its melting point.
what temp and airflow? no one ever says that...
Hi,what is the grey compound that you used to solder the chip?
what did you used in soldering ?? what is the name of the material did you put on the board before you put the chip ?
what form of wizardry is that grey stuff anyway?
How do to overheat or damage the DRAM? DRAM Spec indicate storage tempreture no more then 150 celsius!
Still works today after so many many years now......
Hola, una pregunta que utilizas para soldar el integrado a la pcb??? gracias.
PD. flux¿¿ o pasta de soldar¿¿¿
Why so many dislikes? Great work!
Greetings from Germany.
Sometimes its accidentally pressed. Even I did it...
@@MrAjmal2010 You know you can un-dislike an acidental disliked video, don't you?
@@persona83 Lol..I didnt know they have dislike button over there ???
@@MrAjmal2010 If you click again in the thumbs down, the video will be un-disliked. Or, if you click the thumbs up button, your dislike will be convert to a like.
everyone knows that..some people dislikes your video. Maybe they accidentally did it
What alloy is the solder paste and what is the temperature setting on the hoy air gun?
380 degree for my workings peed and the paste was a cheap standard smd solder paste
Woher weißt du, dass genau diese Platine Reinigung braucht und nicht schlicht kaputt ist.
you did the exchange of chips? or welding again?
Cool, been wanting to get a hot air station and wasn't sure how hard it was. Looks like you had a couple shorted pins that were fixed when you cut to the end. How did you fix them just more heat?
this was my very first try with solderpaste and hotair... i used too much solderpaste thats why i had some shorts but its easy to remove them... simply used solder wick
if you try it usw not to much amount of solderpaste and everything goes very easy :D
Hello there, I have a hot hair gun but find that sometimes other components fly off with the air pressure. How do you do it without losing smd capacitors? Do you use very low air pressure? I need to practice.
+jmicari simply use very very low airstream rate ... on smd parts use a very soft breeze
+FREEDOM What they used to do was print a tiny dot of epoxy under the the component. Now, they use a stencil and a squeegee for the solder paste. In most cases, the SMD component will actually align itself to the pads, due to the forces of surface tension. The solder mask helps too.
Where did you get the ic? I have a memory that doesnt work and i could try to repair it!
Which tools have used
wich component exactly ?? a DIL ? plcc ? psop ?
Is this the way you upgrade the memory stick for computers?
repair.... not upgrade
ramiretz I know, just kidding
no you just down load more from the interweb
ecks dee ecks dee
ok ok ... I know how to do that :D but how I can tell what chip is damaged ?
You can check with a Avometer(Multimeter) if you know how to use it.
@@kafakoparan does it do something like ohming to zero? With all those pins, what grouping is a pass through for the single segment or group of internal segments. Is it top left bottom right? Or is there like several groupings?
looks good. im going to 2M school in a few weeks so have a lot of that to look forward to.
Hy from Bucharest, what temp u use ?
one of the most satisfying video ever
I think the hot-air solder is too hot for that chip. Or I am wrong?
hot air only? was that not a soldering iron at 1:20? Or is the hot air you are producing click bait?
soldering and desoldering is made with hotair so whats the point ??? i cleaned the solderpads with the iron to show after how to resolder with hotair only... so desoldering and solder is only made with hotair only.....
great job ,
can you tell me the name of tool wich is picking ic ,
its a Aoyue 939 Vacuum Suction Pen
@@ramiretz thanks
what temperature you are soldering ?
and how did you remove the shorts? hotair could not do that
panospro7 with solderwick
@ramiretz You could also show the final result, that it works...
The result was uploaded here : ua-cam.com/video/Z7QMFORrNus/v-deo.html
@@ramiretz Oh, ok...
How to identificate the failure on chip using a multimeter?
no put a boot CD with memtest in the computer and start the memtest... when the RAM Chip gets hot you can se it Fails on the memtest calculations, then take a ice spray and cool down every single chip as soon as you see the memtest calculations are getting ok again you found the defective chip ... takes a little time but its worth the effort especial on old ram clusters witch are not available anymore like the one shown in the video
Thanks! It helped me a lot.
Shoulnt you put the paste down first? Just asking.
Как называется приспособление, которым от прицепил микросхему?
It's also a case of temperature tolerance, chips can take much higher temperatures when not operating.
Esa pasta es Estaño ?
hello what is it like product in the syringe ? I 'm looking I can not find . nice work !
zack superman solderpaste
thanks that's it's ok ? -> www.aliexpress.com/item/Free-Shipping-Wholesale-50g-Soldering-Repair-Solder-Paste-Cream-Welding-Seal-Grease-Tools-819752/1135481254.html?spm=2114.32010308.4.2.HSSQQV
Hello, I know that bone solder paste used the name?
Can you detail this process of identifying the bad chip or point me to some documentation about it?
Nice work, I have lots of bad memory sticks but have never tried to repair one from the others because of not being able to know witch one(s) is/are the bad chip(s) on it...
When you wick off all the old solder, you're throwing away perfectly good solder that could have been used to tack your device down, greatly simplifying the job.
Not really. The old solder is lead-free and is harder to work with, requires higher temperatures and is more brittle too. Leaded solder requires lower temperatures and you do the work quicker than you would with the lead-free. You just need a quality leaded solder wire and all is good.