"Do not remove the shorting jumper until you've connected all the cables" I wish products were designed where you could even _get_ to the optics module without removing the faceplate, the headphone jack, the tray, the transport lift mechanism, the front right decorative foot, and the open/close button. Much less the ribbon cables. I was just working on a NS3100-ES and had to try swapping lasers. I'm going to have to empty the swear jar here pretty soon.
I guess the theory with a knife tip is that you have a fine tip but also a larger surface area. I don't really use them, except when they come in a pack and I use that tip as a sacrificial lamb when I need to melt some plastic or something, really good for that though.
It was really great to see how you handled that first one with the fractured motherboard PCB. I have these boxes filled with partial PCBs, and I am really big into desoldering through Hole parts and really doing whatever I can to the salvage components. So seeing examples of how a real pro repairman might approach the different types of appliances. Your dvds might need a type of region encoding, or it may be expecting CSS encryption, and when it rejects, it maybe that the disk is not CSS encrypted? AGAIN, THANKS FOR SHARING ALL YOUR REPAIR VIDEOS!!
Not even all commercial discs are encrypted or region coded, so that should not be a limitation. It's actually a little sad that lock-outs are so common that someone would think they are mandatory for proper operation. What a shameful state we're in for that to be the case. :-(
The first one looks like it got dropped from at least the 4th story onto concrete... Such an impact shock might have damaged the optical pickup as well, and/or bent the shaft of the disk motor, since there was a disk in it.
The book type may be unrecognised. That is why I use DVD+R/+RW as it is simple to change the book type to DVD-ROM resolving all compatibility issues with book types not being supported by players as all players support DVD-ROM. In this case the disc that causes the problem is a DVD+R so the book type is probably set to DVD+R and unrecognised by the player. The disc that work are DVD-R, although unlike with DVD+R you can not change the book type, this player obviously recognises the DVD-R book type
Your problem disc is a DVD+R. If this player is too old it wont recognise a DVD+R that has its "book type" set to DVD+R. With DVD+R you can change the book type, unlike with DVD-R. This allows DVD+ users, like myself, to make sure the book type is set to DVD-ROM when burning on the PC. This eliminates such compatibility issues as every dvd player knows the DVD-ROM book type. Newer players would recognise the newer book types anyway. You may find this player, depending on its age, may also not like DVD-R DL. Just depends on if it recognises the book type for that disc too.
That one DVD Toshiba refuses to read might just not be finalized. Laser just does not know where the end of the disk is and throws the incompatibility error. That's the one thing that comes to mind because they all look the same in all the other ways. And older players sometimes had this problem.
Yes but can you remove the limiting diode and run the laser with a bunch of 1.5V batteries to cut a hole in the roof and escape the bad guys like McGyver?
@@mrnmrn1 I looked it up. Episode 30, CD-ROM + HOAGIE FOIL. December 1, 2017 season 2 episode 9. From en.m.wikipedia.org/wiki/List_of_MacGyver_(2016_TV_series)_episodes
I got a nice Samsung UE32H5000 LED HD 1080p TV, 32" with Freeview HD this weekend did have to pay £25 for it but does have a remote and works very well as a monitor to its a nice tv for the 25 I paid. it's so light too.
I enjoy watching your videos and I am in to electronics and have also fixed a version of your Sony amp that had 2 dead channels center and left was dead from not having speaker wired to.
I thought playing even stamped CDs is not possible with a red laser, the thickness of the CD substrate was chosen specifically for 780nm lasers , because it was designed around the refraction index of the polycarbonate, it has a role in the focusing and the interference between pits and lands. That's why DVDs are half as thick as CDs, they have a second disc glued to them to have the same thickness, but that second disc is just mechanical support. I wonder what trick they applied to solve this. Nice instant usage of a salvaged part 🙂
Dvd players either contain two laser diodes, one for CD and one for DVD or they have a laser diode that can output both wavelengths. This is why some dvd or Blu-ray players lose the ability to play a type of disc, yet can still play others. They have more than one diode
@@dlarge6502 they have 1 or 2 laser diodes. The single laser can not play CDR. 2 diodes can both use same lens. Blu-ray have 3 diodes and 2 lenses. 1 lens for the violet laser and the other for red and IR Some early units had 2 lenses one for CD and the other for DVD.
Aw gee... we'd love that Family Guy DVD just for the lulz... Haven't watched the show in years... Otherwise put it in a case and drop it off at one-a those little street libraries... Or use it for a 'shop DVD'?
I have not found on-line the explanation on how can a red laser play audio CD which were designed for infrared laser: the depth of the pit on the disc is calibrated so that it will cause destructive interference between the part of the beam that is reflected by the pit bottom and the part reflected by the area surrounding the pit. Maybe the difference in wavelength it is not so great (780 nm for CD, 650 nm for DVD) and it will cause destructive interference as well with red laser, but the spot needs to be much larger compared to DVD. Considering how CD-R works (they do not rely on interference, the pit are burned so that they do not reflect any light) i would say they should work straight way with a red laser, but maybe, as you say, the reflecting media in CD-R is too transparent for visible light.
I'm wondering about this as well. I wouldn't think there would be any difference between pressed and recordable CDs from a wavelength perspective. As far as I know, the difference has more to do with reflectivity and corresponding s/n ratio. Players without automatic gain control do poorly, but those with sufficient gain headroom and low noise in the RF amp do OK. I am prepared to be educated, though. EDIT: I should know better than to post before the end of the video. This is all explained at ~30:00. Would be interesting to find a second source though, just for verification.
@@nickwallette6201 S/N ratio is related to the difference between fully reflected beam (high signal) and non reflected beam (low signal); transition from high to low or low to high is decoded as "1" no transition is decoded as "0". Stamped CD's use an aluminium layer to reflect light; the "low" signal level is generated using a property of the laser light whereas two coherent laser beams with a 180 degree phase shift will cancel out each other. CD-R uses a reflective layer that is burned by the recording laser so that it will not reflect light thus generating high and low signals. CD-R behaves almost like stamped CD in terms of S/N ratio so much so my old 1985 Philips CD player reads CD-R with no problem. To my knowledge automatic gain control was added only to support CD-RW's which have lower S/N. But indeed all early DVD players with a single red laser will not read CD-R; therefore the properties of the reflective layer very likely does not work with 650 nm laser.
Keeping the motors/gears and belts in a bag is always a good idea. You found that out with cassette recorders and the stupid prices for motors. i was disgusted by peoples greed.
Well.. it's supply and demand... If they gave them away for a low price, they'd probably get snatched up, and there wouldn't be _any._ At least now you have an option. It's up to you whether it's worth it.
I was able to find genuine NOS Mabuchi tape deck capstan motors on Aliexpress for around 5 USD, both 2-wire ones with internal trimpot and 4-wire ones with external trimpot. I bought two 2-wire ones, and six 4-wire ones so far, but I will buy more until it's available. Some of them are slighty corroded, but nothing serious.
My guess: The transport location is not really super critical. The lens can scan several tracks without having to move the pickup sled. So, when the cracked gear meshes with the other, I'm sure the lens position servo is working a little more to track the disc, but a player is frequently adjusting the sled position in tiny increments, so it likely gets through that rough patch well enough to keep playing. Either that, or it would only show up with tracking issues at certain positions on the disc, where that crack in the gear has the biggest impact on alignment. The rest of that gear's rotation would be more or less OK.
My first non linear editor I but together around 96 had a 9gig ultra scsi. It was 4000 just for the drive and another 450 for the controller. In 99 I added a second drive this time and 18 gig ultra-wide scsi. They were both 10000 rpm. The second one was 2500. A dual layer DVD is 8.5g. Most people had small drives because the big ones cost an arm and leg but for video editors they were a requirement because uncompressed visekbcheqed up 1 gig per minute. File size was limited to 2 gigs back then so we had to gey creative and edit in small chunks and export back to tape. This made projects take forever to do.
@@12voltvids my fiest PC I bought was in 1997 a Pentium 2 266mhz and 6.4GB Hardrive and a whopping 32MB of ram. I believe I paid about 4000. I didnt do pro stuff, I just used it to browse the web. Backnin the day you could see your neighorhoods nework and all their files. Lol
There are many differences between dvd- and dvd+, which is why i prefer dvd+. Dvd+ has a trick up its sleeve to address this compatibility issue, but you have to remember to "turn it on" when burning a disc on a pc otherwise older players wont recognise a dvd+r
@@dlarge6502 What I meant with "for some reason" is why those 2 competing formats even had to exist. Kinda same like HD-DVD vs. BluRay. Edit: Competition isn't always good for the consumer.
@@kyoudaiken It wasn't anything like HD-DVD vs blu-ray because DVD+RW (what it was officially called) was compatible with DVD-. The reason it existed was to replace the more primitive DVD- standard with something that could take on DVD-RAM (which was a format that you could see as being like hd-dvd vs blu-ray). No consumer ever had an issue with DVD-R vs DVD+R so saying it wasn't good is, silly. It barely affected anyone and most of the time things like setting the correct book type were edge cases few people ever had to worry about. Also HD-DVD vs blu-ray only includes the formats that people remember. There was a bigger format than hd-dvd, not to mention other someting formats. It wasn't a format war between only 2 standards, there were many and HD-DVD was the smaller of several. As for it being bad, no, it could have been very good. Had HD-DVD won we would have have a very cheap and usable media, but unfortunately it didn't, leaving the consumer with the bad choice, blu-ray, which is (was) expensive to license (hd-dvd was free) as well as incredibly locked up in DRM. The only thing going for it was its technical superiority, which it really did have. But no, consumers never had an issue with DVD-R vs DVD+R. They just bought what was cheaper or what I recommended when I sold them to them (I recommended dvd+r because of its superior design). Keep in mind that dvd-R and DVD+R are still current... again, you cant compare them to a format war as neither won!
This is not to do with that, it is how the disc was mastered. A dvd+r disc is probably much newer than this player, thus it will not recognise the dvd+r book type. Dvd+r however, to improve compatibility, was given the ability to allow the user to select a fake book type when burning in a PC. The idea was you could burn with the dvd-rom book type, this would allow every dvd player to recognise the disc. I guess the disc he mastered on his PC simply has the wrong book type, one that this player is too old to support.
This stuff happens _all the time._ It seems large companies, who are competitors in retail, have absolutely no problem sourcing parts from their rivals if they are better and/or cheaper than what they could make themselves, or source from someone else. As well they shouldn't! But it is sometimes amusing to see such strange bed-fellows.
Of course they're drunk one of them's already gone in the bin the other one I'll put it up for sale for 10 bucks and see if some sucker will take it or maybe I'll set it off the value village and they'll put it up for 10 bucks or whatever they sell them for somebody will use it it works plays DVDs fine it just won't play CDR
"Do not remove the shorting jumper until you've connected all the cables"
I wish products were designed where you could even _get_ to the optics module without removing the faceplate, the headphone jack, the tray, the transport lift mechanism, the front right decorative foot, and the open/close button. Much less the ribbon cables.
I was just working on a NS3100-ES and had to try swapping lasers. I'm going to have to empty the swear jar here pretty soon.
I guess the theory with a knife tip is that you have a fine tip but also a larger surface area. I don't really use them, except when they come in a pack and I use that tip as a sacrificial lamb when I need to melt some plastic or something, really good for that though.
It was really great to see how you handled that first one with the fractured motherboard PCB. I have these boxes filled with partial PCBs, and I am really big into desoldering through Hole parts and really doing whatever I can to the salvage components. So seeing examples of how a real pro repairman might approach the different types of appliances. Your dvds might need a type of region encoding, or it may be expecting CSS encryption, and when it rejects, it maybe that the disk is not CSS encrypted? AGAIN, THANKS FOR SHARING ALL YOUR REPAIR VIDEOS!!
Not even all commercial discs are encrypted or region coded, so that should not be a limitation.
It's actually a little sad that lock-outs are so common that someone would think they are mandatory for proper operation. What a shameful state we're in for that to be the case. :-(
I thought DVD players could only do S-video and composite. Interesting to see component outs.
your teachings of how this works is amazing. I learn so much. your my yoda for electronics teaching.
The first one looks like it got dropped from at least the 4th story onto concrete... Such an impact shock might have damaged the optical pickup as well, and/or bent the shaft of the disk motor, since there was a disk in it.
Well i got to throw it. In the bin.
Mr. Volts. I have to admire the 2nd unit The Toshiba, you did not pick up Chinese "Air"! 😊
I like to keep the screws from stuff too.
that second one looks exactly like our first DVD player. not sure if exact match, i don't remember the model number or ours
Disc playback compatibility may depend on how the disc was finalized. The PC burnt one, might have not been finalize in the same way.
The book type may be unrecognised. That is why I use DVD+R/+RW as it is simple to change the book type to DVD-ROM resolving all compatibility issues with book types not being supported by players as all players support DVD-ROM. In this case the disc that causes the problem is a DVD+R so the book type is probably set to DVD+R and unrecognised by the player.
The disc that work are DVD-R, although unlike with DVD+R you can not change the book type, this player obviously recognises the DVD-R book type
Your problem disc is a DVD+R. If this player is too old it wont recognise a DVD+R that has its "book type" set to DVD+R.
With DVD+R you can change the book type, unlike with DVD-R. This allows DVD+ users, like myself, to make sure the book type is set to DVD-ROM when burning on the PC. This eliminates such compatibility issues as every dvd player knows the DVD-ROM book type.
Newer players would recognise the newer book types anyway. You may find this player, depending on its age, may also not like DVD-R DL. Just depends on if it recognises the book type for that disc too.
That one DVD Toshiba refuses to read might just not be finalized. Laser just does not know where the end of the disk is and throws the incompatibility error. That's the one thing that comes to mind because they all look the same in all the other ways. And older players sometimes had this problem.
Yes but can you remove the limiting diode and run the laser with a bunch of 1.5V batteries to cut a hole in the roof and escape the bad guys like McGyver?
LOL... wait, that was really in a McGyver episode?! I can imagine... In which episode? I want to have a good laugh, hope it's available on YT.
@@mrnmrn1 I can't remember which episode but yes. He and a girl were trapped in the attic.
@@mrnmrn1 I looked it up. Episode 30, CD-ROM + HOAGIE FOIL. December 1, 2017 season 2 episode 9. From en.m.wikipedia.org/wiki/List_of_MacGyver_(2016_TV_series)_episodes
@@AERVBlog Oh, thanks a lot! So it's from the new series. I thought it's from the original. I'll still try to find it. Thanks again!
I got a nice Samsung UE32H5000 LED HD 1080p TV, 32" with Freeview HD this weekend did have to pay £25 for it but does have a remote and works very well as a monitor to its a nice tv for the 25 I paid. it's so light too.
I enjoy watching your videos and I am in to electronics and have also fixed a version of your Sony amp that had 2 dead channels center and left was dead from not having speaker wired to.
I thought playing even stamped CDs is not possible with a red laser, the thickness of the CD substrate was chosen specifically for 780nm lasers , because it was designed around the refraction index of the polycarbonate, it has a role in the focusing and the interference between pits and lands. That's why DVDs are half as thick as CDs, they have a second disc glued to them to have the same thickness, but that second disc is just mechanical support. I wonder what trick they applied to solve this.
Nice instant usage of a salvaged part 🙂
DVD are 2 discs glued together but that top dysk can have a data layer. Dual Iayer disc.
Dvd players either contain two laser diodes, one for CD and one for DVD or they have a laser diode that can output both wavelengths. This is why some dvd or Blu-ray players lose the ability to play a type of disc, yet can still play others. They have more than one diode
@@dlarge6502 they have 1 or 2 laser diodes. The single laser can not play CDR. 2 diodes can both use same lens. Blu-ray have 3 diodes and 2 lenses. 1 lens for the violet laser and the other for red and IR
Some early units had 2 lenses one for CD and the other for DVD.
@@12voltvids It always amazes me just how small the diodes and their separate optical paths became.
Aw gee... we'd love that Family Guy DVD just for the lulz... Haven't watched the show in years...
Otherwise put it in a case and drop it off at one-a those little street libraries... Or use it for a 'shop DVD'?
I have not found on-line the explanation on how can a red laser play audio CD which were designed for infrared laser: the depth of the pit on the disc is calibrated so that it will cause destructive interference between the part of the beam that is reflected by the pit bottom and the part reflected by the area surrounding the pit. Maybe the difference in wavelength it is not so great (780 nm for CD, 650 nm for DVD) and it will cause destructive interference as well with red laser, but the spot needs to be much larger compared to DVD. Considering how CD-R works (they do not rely on interference, the pit are burned so that they do not reflect any light) i would say they should work straight way with a red laser, but maybe, as you say, the reflecting media in CD-R is too transparent for visible light.
I'm wondering about this as well. I wouldn't think there would be any difference between pressed and recordable CDs from a wavelength perspective. As far as I know, the difference has more to do with reflectivity and corresponding s/n ratio. Players without automatic gain control do poorly, but those with sufficient gain headroom and low noise in the RF amp do OK.
I am prepared to be educated, though.
EDIT: I should know better than to post before the end of the video. This is all explained at ~30:00. Would be interesting to find a second source though, just for verification.
@@nickwallette6201 S/N ratio is related to the difference between fully reflected beam (high signal) and non reflected beam (low signal); transition from high to low or low to high is decoded as "1" no transition is decoded as "0". Stamped CD's use an aluminium layer to reflect light; the "low" signal level is generated using a property of the laser light whereas two coherent laser beams with a 180 degree phase shift will cancel out each other. CD-R uses a reflective layer that is burned by the recording laser so that it will not reflect light thus generating high and low signals. CD-R behaves almost like stamped CD in terms of S/N ratio so much so my old 1985 Philips CD player reads CD-R with no problem. To my knowledge automatic gain control was added only to support CD-RW's which have lower S/N. But indeed all early DVD players with a single red laser will not read CD-R; therefore the properties of the reflective layer very likely does not work with 650 nm laser.
I repaired an LG Blu-ray player issues with the plastic face had big cracks
I always save the power supply board..belts and motors.
I think 🤔 a time back in a previous video, maybe two or three yrs, You utilised a static strap on your wrist which then ran to ground.
Never have i used a ground strap
@@12voltvids l stand corrected, l got mixed up with another video. My Bad! Thks.
Keeping the motors/gears and belts in a bag is always a good idea.
You found that out with cassette recorders and the stupid prices for motors.
i was disgusted by peoples greed.
people greed is pushed by the greed of the most richest folks in power only its called inflation and the rest have to deal with it
Well.. it's supply and demand... If they gave them away for a low price, they'd probably get snatched up, and there wouldn't be _any._ At least now you have an option. It's up to you whether it's worth it.
I was able to find genuine NOS Mabuchi tape deck capstan motors on Aliexpress for around 5 USD, both 2-wire ones with internal trimpot and 4-wire ones with external trimpot. I bought two 2-wire ones, and six 4-wire ones so far, but I will buy more until it's available. Some of them are slighty corroded, but nothing serious.
Interesting that the other discs played even with cracked gear.
My guess: The transport location is not really super critical. The lens can scan several tracks without having to move the pickup sled. So, when the cracked gear meshes with the other, I'm sure the lens position servo is working a little more to track the disc, but a player is frequently adjusting the sled position in tiny increments, so it likely gets through that rough patch well enough to keep playing.
Either that, or it would only show up with tracking issues at certain positions on the disc, where that crack in the gear has the biggest impact on alignment. The rest of that gear's rotation would be more or less OK.
Do you or anyone know were I can get a service manual for a victor boombox from Japan were trying to save it its playing to soft.
where can i find spare parts for betamax player??
DVD when Dual layer DVD's had more storage than Hardrives in 1997
My first non linear editor I but together around 96 had a 9gig ultra scsi. It was 4000 just for the drive and another 450 for the controller. In 99 I added a second drive this time and 18 gig ultra-wide scsi. They were both 10000 rpm. The second one was 2500. A dual layer DVD is 8.5g. Most people had small drives because the big ones cost an arm and leg but for video editors they were a requirement because uncompressed visekbcheqed up 1 gig per minute. File size was limited to 2 gigs back then so we had to gey creative and edit in small chunks and export back to tape. This made projects take forever to do.
@@12voltvids my fiest PC I bought was in 1997 a Pentium 2 266mhz and 6.4GB Hardrive and a whopping 32MB of ram. I believe I paid about 4000. I didnt do pro stuff, I just used it to browse the web. Backnin the day you could see your neighorhoods nework and all their files. Lol
For some reason, there is a difference between DVD+ and DVD- - most devices cannot read nor write DVD+.
There are many differences between dvd- and dvd+, which is why i prefer dvd+.
Dvd+ has a trick up its sleeve to address this compatibility issue, but you have to remember to "turn it on" when burning a disc on a pc otherwise older players wont recognise a dvd+r
@@dlarge6502 What I meant with "for some reason" is why those 2 competing formats even had to exist. Kinda same like HD-DVD vs. BluRay. Edit: Competition isn't always good for the consumer.
@@kyoudaiken It wasn't anything like HD-DVD vs blu-ray because DVD+RW (what it was officially called) was compatible with DVD-. The reason it existed was to replace the more primitive DVD- standard with something that could take on DVD-RAM (which was a format that you could see as being like hd-dvd vs blu-ray).
No consumer ever had an issue with DVD-R vs DVD+R so saying it wasn't good is, silly. It barely affected anyone and most of the time things like setting the correct book type were edge cases few people ever had to worry about.
Also HD-DVD vs blu-ray only includes the formats that people remember. There was a bigger format than hd-dvd, not to mention other someting formats. It wasn't a format war between only 2 standards, there were many and HD-DVD was the smaller of several. As for it being bad, no, it could have been very good. Had HD-DVD won we would have have a very cheap and usable media, but unfortunately it didn't, leaving the consumer with the bad choice, blu-ray, which is (was) expensive to license (hd-dvd was free) as well as incredibly locked up in DRM. The only thing going for it was its technical superiority, which it really did have.
But no, consumers never had an issue with DVD-R vs DVD+R. They just bought what was cheaper or what I recommended when I sold them to them (I recommended dvd+r because of its superior design).
Keep in mind that dvd-R and DVD+R are still current... again, you cant compare them to a format war as neither won!
Blu-rays have 4 laser because it takes another laser for
I believe you missed the gold coins inside.
I'm a huge family guy fan 👪
files Are different on Pc than recorders, i have that same issue too, they need be converted for some players.
This is not to do with that, it is how the disc was mastered. A dvd+r disc is probably much newer than this player, thus it will not recognise the dvd+r book type. Dvd+r however, to improve compatibility, was given the ability to allow the user to select a fake book type when burning in a PC. The idea was you could burn with the dvd-rom book type, this would allow every dvd player to recognise the disc.
I guess the disc he mastered on his PC simply has the wrong book type, one that this player is too old to support.
Cheapo DVD players have allways been very unreliable. Had many of those cheap LG player and it was lotto if the disc plays properly or not.
DVD+R probably work.
Dvd-r play. DVD+r nope.
DVD-R is closer to be compatible to regular stamped DVD's +R is more for DATA
Lg dvd player i had had a samsung laser in it
This stuff happens _all the time._ It seems large companies, who are competitors in retail, have absolutely no problem sourcing parts from their rivals if they are better and/or cheaper than what they could make themselves, or source from someone else. As well they shouldn't! But it is sometimes amusing to see such strange bed-fellows.
You were lucky, because LG lasers are usually garbage, they don't last.
look at all the wasted space inside the player
mmm Panasonic DMR E20
I have 2 of them. One of the best recorders i have.
Junk.
Of course they're drunk one of them's already gone in the bin the other one I'll put it up for sale for 10 bucks and see if some sucker will take it or maybe I'll set it off the value village and they'll put it up for 10 bucks or whatever they sell them for somebody will use it it works plays DVDs fine it just won't play CDR
hello what country are you from?
Canada
@@12voltvids I also had a panasonic rx-fs430 and I wanted to have bluetooth on it,but my country is England
👍🇵🇱🇵🇱👍
I'm not a fan of family Guy