Peter, your followers just like to watch your thought process (methodology) when troubleshooting radios. You are one of the best radio service technicians on UA-cam. Please keep all the videos coming, even the simple ones.
Ich habe gedacht, die Arbeit an der Elektronik zu beenden, da die Teile zu klein sind für meine schlechten Augen und ich habe kein Mikroskop. Große Reparatur wie immer.
As usual, Peter, another well done repair video! It's so nice to watch skilled folks like you, Mike, Paul, Alan, etc. to see different troubleshooting techniques. I have been doing component level repairs for over 20 years and I still learn from you guys.
Another fantastic job by TRXBench! You made this repair look so easy Peter. Well done. This shows how confident you are with these radios. Ok back to work here, I have a shop full of rigs. 73.
Not an expert by any means…but I’m glad I’m not the only one who gets the diode orientation mixed up sometimes! Your videos are always excellent. Good, detailed and clear step by step instructions. Your English is excellent as well. Thank you for taking the time to make these videos!
To remove a definitely faulty SOIC component without heating and dislodging nearby components, cut each pin close to the case with a small thin sharp sidecutter, then remove the pin stubs from the pads individually with a soldering iron and solder-sucker or solder wick. It is important to use a thin sharp sidecutter so that the pins do not snap sideways when cutting, which can lift the pads from the PCB if the pad traces are thin (in this case the traces are as thick as the pads so it is not as much of an issue). You can also use a very sharp knife to cut each pin, though that requires a bit more skill to avoid slipping and damaging the board. Solder-wick the pads, clean and then apply flux so that there is a flat surface to lay the new component onto. Then clean off the flux.
I always appreciate the extra work you go thru to do these videos, Peter. This repair reminds me of fixing the infamous IC151 in a Icom 746. I used aluminum HVAC tape to protect the surrounding parts. Thank you!! - Bob
I must be learning something from your videos as I was calling the shots just before you made them, great work, good to see the radios come back to life.
Another great repair Peter. Two suggestions. One is to use Kapton tape to help shield surrounding components when using a hot air hand piece. The second is to use a SMD desoldering alloy. I did a video the other week where I demonstrated how to use it. Great for use in areas where hot air reflow isn't practical.
Kapton tape is great stuff - In those really tight spots where a soldering iron is needed I use a Weller WM-120 miniature iron which has a tiny, very sharp tip that lets you get in between stuff minimizing the chance of damaging adjoining components. You also reminded me that I need to make up another TMP connector dongle with a female connector to be able to connect downstream in a circuit. Great job as usual Peter, thanks! 73 - Dino KL0S
TRX Bench LOL, the story of every radio tech. I got it but can't find where I put it last time I used it. It's amazing how much junk we collect over the years. Problem is we can never seem to find that one thing we know we have when we need it. Always gets found a few days later. :-)
This was very helpful, and fun to watch! I have an IC-7100 that's not producing any power on HF, so according to this, it could very well be the HF pre-amp on the amplifier board... good to know. Big thumbs up for the video!
Yeah I know what you are talking about. In the early days when eyes where fine components were large now where our eyes are getting worse components are getting always smaller LOL. Thanks for watching Alan
Peter, thank you for sharing. When I was in electronics school we didn't have videos like these (1987) and I don't think I got as much out of it as I do from your excellent u-tube videos.
Nice video Peter, I like that you go into details, used your signal generator to simulate estimated input to the output board and isolated 'blocks' of the signal path to identify the trouble location. Though you wetted my curiosity with what the 'normal' output of the low level amp would be once it was replaced. It would have been nice to see if it in fact was +3DBm or what it would be once connected to the output board. Thanks again for your time making these videos.
thanks for the very clear step by step run through of your fault finding process. just goes to show you must double check work at every stage just to be sure that you dont get confused at the end
My maths must be off. According to the specs, the current drain of the BGA2709 is Is= 23.5 mA. Across a 100 ohm resistor, that equates to a voltage drop of 2.35 volts. Therefore the voltage at the chip should be Vs= 5 - 2.35 = 2.65 V.
With the confusion about the polarity of the diode I always mark components with a felt tip pen before removing them and make a mark on the board to confirm this.
Good video as always Peter, I was surprised you didn't use kapton tape, I'm sure I have seen you using it in previous videos. I have a stack of radios I need to get videos done on!
Hi Peter. That diode with the orientation problem. Rewind your video a few minutes and take a look at the placement. If I do a repair, like you, I always video what I do, just in case I lose track of a component or or its placement on the pcb. I always enjoy the professional way you go about finding a problem. I too have an IC-7100, IC-7300 FT-2000 and an FT-817. Just one thought that you might do for us viewers: Before or during your videos, could you take a few moments to highlight common problems you have found with the radio you are working on? It helps us collect the components that are known to commonly fail for a possible future repair we might have to do to keep in our personal stock. Regards Tony - G6YPK
Great work Peter! This is the proof of being methodical always pays. A quick question; I want to build a 1KW HF lineer amplifier for my station, I found a lot of schematics on the internet but I don't know about their quality. Since these kinds of transistors are very expensive, I don't have the budget to experiment and make mistakes. Can you advice me a circuit that you know works well, and fairly easy to build with easy to find parts? I know that tube amps are much easier to build and they are tougher, but I have no experience with tubes and they are not very easy to find in my country, so it seems I'm stuck with transistors :-) 99% of the time I work in 40 and 20 meters, so it really doesn't need to include other bands. Many thanks! TA2AWX
Thank you Bora! There are PA projects with 2 x 16 = 32 IRF 820 mos fet transistore. This Mos Fet's are very cheap even if you need 32 of them... Google for it. Hope it helps 73
Nice job, I know how depressing it is now not to have good Eyesite anymore to work with smd, I used to be able to read the serial numbers, now I can hardly see the bloody things even under a magnifying glass....used to love doing repairs, cant do them anymore, it really saddens you and kills part of the hobby and enjoyment you had.
love the methodical testing. one question is why didn't you use Kapton / polyamide tape and aluminum / aluminium foil to shield around the adjacent components?
I always look forward to your videos, I especially enjoy the way you take us step by step through the repair process. You make me feel like I am sitting right at the bench with you. I've seen the ic-7100 in a few of your videos. As an owner of a 7100 I want to ask, are these operator induced failures?
I was thinking exactly the same thing being a new 7100 owner myself. Seeing a lot of videos repairing what look like new devices is a little concerning. I also noticed also that MMIC chip is marked obsolete in a lot of the online stores and seems hard to get. Great video though as always!
LOVE YOUR VIDEOS PETER, MY VISION IS THE REASON I USE CAPS LOCK. IF I AM BEING PICKY I AM SORRY BUT WHEN YOU SEE THE WORD MIC FOR MICROPHONE PRONOUNCE IT MEIK :-) KEEP THE VIDEOS COMING MEIN FREUND. :-)
Thank you for this nice video , I have IC7100 no TX for all band only RX , I change IC BGA2709 and it work normally about 2 month, then stopped again, I change it again its work normally about 2 month and stopped , I think there is some think error I don’t Know it, can you help me……
just use a sharp blade to cut the terminals of the SMD IC, lift it from the board, and a 20 watt Weller to clean the remaining terminals from the board. Use the same Weller to solder in the new part. It's a lot easier, and cleaner procedure.
no, don't worry about destroying the pads, you have to cut the leads exactly near the IC's body. I've tested this method on all kind of SMD IC's, even on those 64 pin Kenwood PLL ICs. Works perfectly.
Found it thank you ! I'm enjoying your work & videos on your youtube channel... Just one thing, like my German friends you need to practice on your 'V's and 'W's ;-) 73
Wow.
I have never held a soldering iron.
Yet I am on the edge of my seat while watching you repair this radio.
Very interesting. Thank you!
LOL very good glad that you liked it 73
Peter, your followers just like to watch your thought process (methodology) when troubleshooting radios. You are one of the best radio service technicians on UA-cam. Please keep all the videos coming, even the simple ones.
Wow thanks for the kind words Rich! Very much appreciated...
0:00 - 0:08 is the best Yaesu commercial ever
Ich habe gedacht, die Arbeit an der Elektronik zu beenden, da die Teile zu klein sind für meine schlechten Augen und ich habe kein Mikroskop.
Große Reparatur wie immer.
Yeah I know what you are talking about..my eyes are getting worse as well. Thanks for watching 73
As usual, Peter, another well done repair video! It's so nice to watch skilled folks like you, Mike, Paul, Alan, etc. to see different troubleshooting techniques. I have been doing component level repairs for over 20 years and I still learn from you guys.
Thanks for the fed-back Roy. It is a honer to be seen in that ranking!! 73
Another fantastic job by TRXBench! You made this repair look so easy Peter. Well done. This shows how confident you are with these radios. Ok back to work here, I have a shop full of rigs. 73.
Thanks for the kind words my friend! Now I have to follow up your videos :^) 73
Not an expert by any means…but I’m glad I’m not the only one who gets the diode orientation mixed up sometimes! Your videos are always excellent. Good, detailed and clear step by step instructions. Your English is excellent as well. Thank you for taking the time to make these videos!
To remove a definitely faulty SOIC component without heating and dislodging nearby components, cut each pin close to the case with a small thin sharp sidecutter, then remove the pin stubs from the pads individually with a soldering iron and solder-sucker or solder wick. It is important to use a thin sharp sidecutter so that the pins do not snap sideways when cutting, which can lift the pads from the PCB if the pad traces are thin (in this case the traces are as thick as the pads so it is not as much of an issue). You can also use a very sharp knife to cut each pin, though that requires a bit more skill to avoid slipping and damaging the board. Solder-wick the pads, clean and then apply flux so that there is a flat surface to lay the new component onto. Then clean off the flux.
Nice to see an nice repair again, loving it. Every time I get I little bit more knowledge from it. Thx
Glad that the videos are useful to you! Thanks for watching 73
Peter, your knowledge and skills always amaze me! I love your channel!
Thank you
I always appreciate the extra work you go thru to do these videos, Peter. This repair reminds me of fixing the infamous IC151 in a Icom 746. I used aluminum HVAC tape to protect the surrounding parts. Thank you!! - Bob
Thank you Bob! Yes I use Kapton or aluminium , too. But I need to find it :^) 73
If you can't find any, let me know & I'll ship you a roll. - Bob
Love the video's dude. I have learned so much! Keep up the good work!!
Again another problem solved! You are the best! 👍❤️
I must be learning something from your videos as I was calling the shots just before you made them, great work, good to see the radios come back to life.
LOL very good that is what we wanted to achieve...73
Another great repair Peter. Two suggestions. One is to use Kapton tape to help shield surrounding components when using a hot air hand piece. The second is to use a SMD desoldering alloy. I did a video the other week where I demonstrated how to use it. Great for use in areas where hot air reflow isn't practical.
Kapton tape is great stuff - In those really tight spots where a soldering iron is needed I use a Weller WM-120 miniature iron which has a tiny, very sharp tip that lets you get in between stuff minimizing the chance of damaging adjoining components. You also reminded me that I need to make up another TMP connector dongle with a female connector to be able to connect downstream in a circuit. Great job as usual Peter, thanks! 73 - Dino KL0S
Dino Papas
I wish they used SMA connectors instead pf those blasted TMP connectors. See so many people pull the cables out of the ends.
the weller wm-120 is great for this kind of work i'm wondering if my wsp 80 is the same size ? thanks for watching dino 3
you are right mike i simply was not able to find it after holidays lol...
TRX Bench
LOL, the story of every radio tech. I got it but can't find where I put it last time I used it. It's amazing how much junk we collect over the years. Problem is we can never seem to find that one thing we know we have when we need it. Always gets found a few days later. :-)
great repair thank you for taking time to do video..top notch tech, Peter
great to have my friends with me Dennis! Thank you 73
This was very helpful, and fun to watch! I have an IC-7100 that's not producing any power on HF, so according to this, it could very well be the HF pre-amp on the amplifier board... good to know. Big thumbs up for the video!
I just learned so much my brain exploded. These videos are so good!
Thanks you very much appreciated!!
Terrific diagnostics and repair. Really great video,
Thank you old friend! 73
Another great repair Peter and my eyes aren't so good these days either! Thank you :)
Yeah I know what you are talking about. In the early days when eyes where fine components were large now where our eyes are getting worse components are getting always smaller LOL. Thanks for watching Alan
Thanks Peter, I have learnt a lot watching your excellent videos regards Mike
Glad that you like it 73
Peter, thank you for sharing. When I was in electronics school we didn't have videos like these (1987) and I don't think I got as much out of it as I do from your excellent u-tube videos.
Hi Mike, honestly glad that you liked it! Thanks for watching 73
I had the same problem in my old school (1989).
Every electronics school should have videos like this.
Congrats for Peter and thanks for sharing.
Thank for stepping in Eduardo! 73
Nice video Peter, I like that you go into details, used your signal generator to simulate estimated input to the output board and isolated 'blocks' of the signal path to identify the trouble location. Though you wetted my curiosity with what the 'normal' output of the low level amp would be once it was replaced.
It would have been nice to see if it in fact was +3DBm or what it would be once connected to the output board.
Thanks again for your time making these videos.
Another great video Peter. I am learning lots about smd watching your videos. 👍
Glad that you liked it 73
Nice piece of electronic detective work.😄
Good video Peter; the BW of those MMIC's always amaze me!
Thank you Mike! yes I agree MMIC's are amazing little components..73
thanks for the very clear step by step run through of your fault finding process. just goes to show you must double check work at every stage just to be sure that you dont get confused at the end
Hi Mike, yes to double check what you have done is a very crucial step to go....Thanks for watching 73
Nice troubleshooting and repair. Thanks for another educational video. Cheers, VE7QJ
Thanks for feed-back 73
Another great informative video Peter thanks for posting.
Thanks for watching John!
Thank you master....great explanation
lol thank you Eduard 73
My maths must be off. According to the specs, the current drain of the BGA2709 is Is= 23.5 mA. Across a 100 ohm resistor, that equates to a voltage drop of 2.35 volts. Therefore the voltage at the chip should be Vs= 5 - 2.35 = 2.65 V.
Thanks Great VDO Loved
Thanks! for the Video this is what i am looking for in tracing back the single back from the amp :D
so video right in time LOL. Thanks for watching 73
Nice repair Peter :)
Thank you Grant 73
Another great video!
Thank you Steven 73
Good summer video...'73. Have a nice day !! CIAO.
LOL very good thak you Alessandro..73
Best mentor out there.
Thank you very kind of you saying that..73
With the confusion about the polarity of the diode I always mark components with a felt tip pen before removing them and make a mark on the board to confirm this.
Nice video once again my friend.
thank you Santos 3
GREAT JOB
Thank you Jim! 73
Good video as always Peter, I was surprised you didn't use kapton tape, I'm sure I have seen you using it in previous videos. I have a stack of radios I need to get videos done on!
LOL yeah Kapton simply mislaid...Thanks for watching
Hi Peter. That diode with the orientation problem. Rewind your video a few minutes and take a look at the placement. If I do a repair, like you, I always video what I do, just in case I lose track of a component or or its placement on the pcb. I always enjoy the professional way you go about finding a problem. I too have an IC-7100, IC-7300 FT-2000 and an FT-817.
Just one thought that you might do for us viewers: Before or during your videos, could you take a few moments to highlight common problems you have found with the radio you are working on? It helps us collect the components that are known to commonly fail for a possible future repair we might have to do to keep in our personal stock. Regards Tony - G6YPK
Thanks for the feed back Tony. Well if it is possible I try but can't promise.. 73
Great diagnostics and fix here my friend. Always a joy to watch.
Regards, John
Thank you my friend always glad to see you John! Cheers
Great work Peter! This is the proof of being methodical always pays. A quick question; I want to build a 1KW HF lineer amplifier for my station, I found a lot of schematics on the internet but I don't know about their quality. Since these kinds of transistors are very expensive, I don't have the budget to experiment and make mistakes. Can you advice me a circuit that you know works well, and fairly easy to build with easy to find parts? I know that tube amps are much easier to build and they are tougher, but I have no experience with tubes and they are not very easy to find in my country, so it seems I'm stuck with transistors :-) 99% of the time I work in 40 and 20 meters, so it really doesn't need to include other bands. Many thanks! TA2AWX
Thank you Bora! There are PA projects with 2 x 16 = 32 IRF 820 mos fet transistore. This Mos Fet's are very cheap even if you need 32 of them... Google for it. Hope it helps 73
Nice job, I know how depressing it is now not to have good Eyesite anymore to work with smd, I used to be able to read the serial numbers, now I can hardly see the bloody things even under a magnifying glass....used to love doing repairs, cant do them anymore, it really saddens you and kills part of the hobby and enjoyment you had.
love the methodical testing. one question is why didn't you use Kapton / polyamide tape and aluminum / aluminium foil to shield around the adjacent components?
Good question, I always use it I just could t find it at that time ;^) Thanks for watching 73
I always look forward to your videos, I especially enjoy the way you take us step by step through the repair process. You make me feel like I am sitting right at the bench with you.
I've seen the ic-7100 in a few of your videos. As an owner of a 7100 I want to ask, are these operator induced failures?
I was thinking exactly the same thing being a new 7100 owner myself. Seeing a lot of videos repairing what look like new devices is a little concerning. I also noticed also that MMIC chip is marked obsolete in a lot of the online stores and seems hard to get.
Great video though as always!
Thank you glad that you like my presentation style :-) 73
Thanks for feed-back. You can get the IC from Icom... 73
Perhaps this part failure was related to the Tx output mod?
LOVE YOUR VIDEOS PETER, MY VISION IS THE REASON I USE CAPS LOCK. IF I AM BEING PICKY I AM SORRY BUT WHEN YOU SEE THE WORD MIC FOR MICROPHONE PRONOUNCE IT MEIK :-) KEEP THE VIDEOS COMING MEIN FREUND. :-)
LOL okay will try in the future 73
danke schoen :-) fyi :-) your english is much much better than mein deutsch :-)
Thank you for this nice video , I have IC7100 no TX for all band only RX , I change IC BGA2709 and it work normally about 2 month, then stopped again, I change it again its work normally about 2 month and stopped , I think there is some think error I don’t Know it, can you help me……
Hi, I checked my BGA2709, its 5vdc.. but the problems are same..
just use a sharp blade to cut the terminals of the SMD IC, lift it from the board, and a 20 watt Weller to clean the remaining terminals from the board. Use the same Weller to solder in the new part. It's a lot easier, and cleaner procedure.
Hi Pop, I would not recommend this method as with the mechanical stress you can easily destroy pads...
no, don't worry about destroying the pads, you have to cut the leads exactly near the IC's body. I've tested this method on all kind of SMD IC's, even on those 64 pin Kenwood PLL ICs. Works perfectly.
Pop Tibi I
Very nice result there.. I had Icom IC-2300H with weak modulation, which ic should I'd check? Thanks.
Hi Dimas, if it would that easy it would me make a rich rich man :^) 73
Fantastic trouble shooting, enjoy every video!
Thank you so much 73
🤙
Is this the same rig you did the capacitor and bridge mod too??
Was thinking the same thing
Do you have something for fdx3000 with no output/transmit?
i make them with same nail polish
Any chance you could send me a copy of the BSD please ? I am a 7100 owner and would like to see how it's designed ! 73's
Hi Jim, what do you mean by BSD?
Sorry... Block Schematic Diagram :-)
ah okay you can google for service manual ic7100. it is on the web...inside the sm you find a bsd.. 73
Found it thank you ! I'm enjoying your work & videos on your youtube channel... Just one thing, like my German friends you need to practice on your 'V's and 'W's ;-) 73
that chip looks like a dust might,do not drop it you will never see is again ..jeff..
LOL yeah that is true..you have to handle it with care.73
(y)
Too much blahh blahhh