When I wash boards I give them a quick shallow bath in isopropyl alcohol after washing with water. The alcohol is very good at removing the water and salts from under components and evaporates much quicker. Just remember to do this outside because the IPA fumes are strong and unpleasant.
I slap my fingers against the slots and memory sockets. Just a little bounce of the meat of your fingers over the open slot will shake a lot of surface tension loose and drip water everywhere. Then compressed air in the nooks and crannies, then dry for a day in a warm spot. Good to go!
This channel is a real blessing and I mean that. There are a couple of other vintage computer / Electrical engineering channels that are not misleading have people like yourself who are passionate and have in depth knowledge to share. every time I watch one of your repair videos I generally learn something new and cannot wait for an opportunity to try to build on my skill sets. There is a tech you tube channel of a bloke in Queensland Australia who makes other Australians look bad he gets used computer parts and cleans PCB's with automotive brake cleaner a very harsh solvent which I have seen when I worked in the automotive industry melt rubber this guy sprays it all over dirty motherboards and alike he is another one who follows the trend of another particular youtube channel who is generally corporate sponsored given a plethora of new tech goodies in fact he acts like he has more cents than brains so to speak. But now the guy in Queensland uses a ultrasonic cleaner but still uses brake cleaner and then shows people who to flip the parts and make stupid mass profits while some poor end user will have a dead pc one day due to the brake cleaner damaging components that stuff even causes rust too on certain metals. You really do show us how to get valuable vintage hardware take care to restore them properly I really am glad your channel come up as a suggestion one day I never look back. Now that prototype board of yours after Christmas is over I think I will be investing in a couple of those do you also have a CPI/PCIE version/s yet?
Another rescued board. And obviously a rare one, too. Even the early 486 boards doesn´t had integrated IDE and floppy. Your high quality content pays off now, it seems. Congrats to more than 15000 subs!
This has a Siemens controller chip. So this most likely was an OEM board for a said name brand. Integrated controllers were not uncommon. But in the larger clone market, they were often too expensive.
Even some of the earliest Pentium boards didn't have integrated controllers. However, I once owned an IBM-branded 286 mainboard with both controllers integrated AND a pair of 72-pin SIMM slots (but NO onboard RAM). IIRC the board was dated 1986. So it was a weird one all around. Sorry I don't still have it.
@@Reziac The earliest ibm boards to use 72 pin ram was probably 1990 iirl. I know they put copyright dates of 1986 on many ps/2 mainboards, even later ones. The early 286 boards used cards which used pin arrays to plug in and were not like a normal 72pin simm.. I don't know how many pins they were though.
@@wishusknight3009 That's what I thought. But bloody hell, here was that IBM board, it was old and long retired when I got it (about 1994). and yes they were standard 72 pin SIMMs, I still have the SIMMs and they worked in a 486. It was probably used at JPL tho (judging by whose trash it was), so might have been a special model not found on the consumer market.
@@Reziac The model 30 was made for quite a few years and did change specification a couple of times. But I do think it was mostly relegated to business sales by the end of its run for its cheap price. It is possible that the last models used 72 pin simms and were only business class offerings. IBM tried to keep a modicum of standardization across the line.
I adopted your method of removing flux from a board by using alcohol with a toothbrush and then using the toothbrush with a paper towel to remove the residue (I use a clean cloth instead of paper towel and throw it in the wash when it gets too dirty). It is a very quick way to clean a board and looks like new afterwards!
I agree, it's a "magical and satisfying moment" indeed. I have a board which I am struggling to repair which had battery damage, I will follow your advice on that. Great video as usual!!
Nice video! You were very lucky you could read that BIOS chip even though it was flaky. The freezing with the CF card is the BIOS software interrupt routine for reading the fixed disk. They likely copied IBM's original routine from the 5170 too closely which will freeze up on drives that are too fast. I go over the problem here: th-cam.com/video/qO3xrl0XR-4/w-d-xo.html It is fixable with disassembly and hex editing of that BIOS, but only if someone figured out the interrupt routine and is able to adjust the timing delay. Besides XTIDE, the other solution would be to use a newer 286 BIOS without the problem. You'd lose all those extra settings though, so it's certainly not ideal! Perhaps they copied the bytes directly from IBM so a little search and replace would work?
Thank you Adrian. Yeah, now where you say that, I remember your video with the IBM and that issue. Somehow I didn't think, that the same bits could be shared with the IBMs original code. I guess, I'll have to dig into that and try to disassemble the BIOS. Thanks for reminding me....
@@necro_ware I'm really bad with x86 disassembly. I bet if we can figure it out or at least find someone to help, then maybe the same fix can be applied to all Phoenix 286 BIOS chips? (Likely similar code with different offsets) Let me point Stewart who fixed the 5170 BIOS to your video and BIOS download. Maybe he can figure it out.
Hmm. this makes more sense than my comment I just made... I surmised it was the cf card being close at the 528mb limit. And it may not have the geometry handling. So a smaller CF might work. I have a 286 that behaves this way. It also uses a dedicated controller. But in this case i would guess you are on the money here.
Following your instructions I've restored an EFA 4DMU-HL3S board inside of a Solitaire arcade cabinet that had a leaky battery. I had no idea how to do any of this before I watched your video. Thank you very much!
Tip for the future : Changing the power voltage can help read back flaky EPROMs, (some will need < 5V, some will need > 5V, depends on their internal circuits). It was not needed here, but if you ever have a bad one with content you can't find elsewhere this could come in handy.
What a great video! I learn so much watching you tinker with these boards, so many tips and tricks. :) I've been binge-watching your channel for days now, absolutely love it. Please keep it up! :) I'd love to see you upgrade this board in the future as you hinted. Especially if it's possible to replace those horrible SIMM sockets, that'd be very educational to see. Best wishes from Sweden!
Just an extra tip : when you put the board upright after cleaning it with water, make sure the chips are aligned VERTICALLY - due to the surface tension of water, water won't flow between the legs of chips so it can get trapped there. If the chips are aligned vertically, the water can escape from underneath the chip itself without pins or legs blocking the "escape route". If you have chips running in both direction, it may not be a bad idea to change orientation after a while. I also find that a hairdryer can help coax water from trapped pockets.
Ahhh... I already have the rubber tips for my Dremel tool , but coating the traces with the flux is the key! I didn't know that, but watching the solder chase the fluxed traces was undeniable, and something I'd literally never seen before. This is all very important to me, as I own a pair of the very rare 25Mhz Harris chip 286 boards w/ 16Mb direct-addressable memory (not EMS) [and w/ soldered battery - ugh!], so I'll probably have to make similar repairs when I try to restore them. Many thanks!
Thank you for showing this technique in such a detailed form. Your channel is excellent and is also very underrated. Thank you for your shared designs. I plan to produce some Dallas replacements for a couple of SGIs. Brilliant design 🙂
Greeting from America's Gulf Coast! I've been watching for about four videos now, and am adding you to my subs list. This was a great troubleshooting path.
Thanks! Can't w8 for the upgrade :) been in computers for as long as I can remember but I started with a 486 sx/33!(later was my first major upgrade, with 9 chips of cache memory as well as going with the dx/33 CPU salvaged from a rummage sale.) I did have an XT but never took the time to learn programming as this seemed to be the only thing to do with these, until the flash card hard drives trick came about, which is exciting! now we can actually play some of those period games on ancient hardware! Cool BIOS trick on the network card too, looks like magic!
wow.. very nostalgic for me..I remember that Ive been working on those types and similar motherboards and doing those repairs almost 30 yrs ago.. well Im still doing electronics and computer repairs but this does brings back memories.. thanks..
Thanks for the amazing videos. It's nice to see the quality improvement on your videos and new techniques over time. All your videos are very satisfying and teach us a lot. Keep up the good work.
Наконец то 286 :) П.С. Я мою платы Mr.Muskul зелёным, смываю, потом розовым, смываю. Далее феном без нагрева выдуваю всю воду, в конце горячим потоком сушу. Ставлю в сухое тёплое место на 1 день. Выглядит как новая.
Amazing restauration. I have a couple of 386 motherboards that need this kind of work. I'll reference your videos for sure. Great work, thanks for putting it out there.
I love your repair videos. Retro computing is something i want to get into as i gew up with these old PCs in the 90s. Yes, i could emulate, but i'd rather have a retro PC :)
It's a work of love and also I took the way to repair, maybe helps to get mine working. Also it's interesting to see what can run with some add ons. I hope you build a pc of this too.
Another great repair video :) 1) I need to be more methodical and patient when cleaning corrosion too. I love your result. 2) I usually use citric acid, this is the acid in lemon juice but in powder form. I make the solution as strong as I want. 3) This faulty ROM chips OMG, I will add this to my tests, thanks for the info!! 4) The two red caps are probably different as these are the only 16v ones (connected to +12v and -12v rails). I need to recheck some of my broken boards now :/
Fantastic video. I own a very similar 286 board with onboard IO controller and up to 4MB RAM support. I bought it faulty due to battery damage and repaired it. One of my favorite pieces of hardware.
I use the same method in washing the boards, except I use blue dawn dish soap. After rinsing with tap water, I give it a final rinse with distilled water and use compressed air for quicker drying. The distilled water helps get rid of impurities that tap water leaves behind for a spotless rinse.
Nice use of the eprom slot on the network card, will have to remember that one. I bet it would also work with SCSI cards or any other where you can add additional ROMs.
WOW! This brought back SO MANY childhood memories of building computers.... I'm so happy I found your channel! Being that I'm 40 now it's been a LONG time since I had to worry about having 640k lol :D THANK YOU for making these videos, it really makes me feel like I have SOME use in the computer world and not totally left behind with these damn tiktok gamers twitching all day lol :P (yea, I know that sounded like an old guy complaining :P )
@@nekomasteryoutube3232 you miss aligned orders of magnitude via compounding. If Moore conjecture continues, even by mega-hyper parallelization, 3-dimension intercenects, quantum computation plus whatever new stuff happens. By the 2090s it will be exa bytes ( 10¹⁸). Or millions of times bigger of ram.
10:20: if you want to reduce the risk with salts left behind after washing the board with water, just remove most of it (shake the board), then spray it with distilled water, shake it again, repeat that setp. Then most of the salts are gone. If you still don't trust that method, spray ethanol (96%) on the board which will mix with the water. Shake the mix off, let the board dry.
May be, but if there is a corruption, it has to be very evil, since the checksum is right. There are also a lot of older 386 and 286 mainboards, which don't want to boot from a compact flash card. I never found what's the exact issue so far.
I pull a lot of old hardware from e-waste and I can confirm that using soapy water is just fine on electronics. As long as you wash away all the soap you're good.
When I wash boards I give them a quick shallow bath in isopropyl alcohol after washing with water. The alcohol is very good at removing the water and salts from under components and evaporates much quicker. Just remember to do this outside because the IPA fumes are strong and unpleasant.
.....unless we want to reeeeeealy enjoy our hobby that is.
@@wishusknight3009 then you need to use a certain other solvent ;) IPA fumes only cause headaches..
@@ochykysh lol yup
Iso fumes are strong but I never found them to be too unpleasent (even for 70% Iso solutions)
I slap my fingers against the slots and memory sockets. Just a little bounce of the meat of your fingers over the open slot will shake a lot of surface tension loose and drip water everywhere. Then compressed air in the nooks and crannies, then dry for a day in a warm spot. Good to go!
This channel is a real blessing and I mean that. There are a couple of other vintage computer / Electrical engineering channels that are not misleading have people like yourself who are passionate and have in depth knowledge to share. every time I watch one of your repair videos I generally learn something new and cannot wait for an opportunity to try to build on my skill sets. There is a tech you tube channel of a bloke in Queensland Australia who makes other Australians look bad he gets used computer parts and cleans PCB's with automotive brake cleaner a very harsh solvent which I have seen when I worked in the automotive industry melt rubber this guy sprays it all over dirty motherboards and alike he is another one who follows the trend of another particular youtube channel who is generally corporate sponsored given a plethora of new tech goodies in fact he acts like he has more cents than brains so to speak. But now the guy in Queensland uses a ultrasonic cleaner but still uses brake cleaner and then shows people who to flip the parts and make stupid mass profits while some poor end user will have a dead pc one day due to the brake cleaner damaging components that stuff even causes rust too on certain metals. You really do show us how to get valuable vintage hardware take care to restore them properly I really am glad your channel come up as a suggestion one day I never look back. Now that prototype board of yours after Christmas is over I think I will be investing in a couple of those do you also have a CPI/PCIE version/s yet?
Thanks. No, I made only this one for ISA
Another rescued board. And obviously a rare one, too. Even the early 486 boards doesn´t had integrated IDE and floppy. Your high quality content pays off now, it seems. Congrats to more than 15000 subs!
This has a Siemens controller chip. So this most likely was an OEM board for a said name brand. Integrated controllers were not uncommon. But in the larger clone market, they were often too expensive.
Even some of the earliest Pentium boards didn't have integrated controllers.
However, I once owned an IBM-branded 286 mainboard with both controllers integrated AND a pair of 72-pin SIMM slots (but NO onboard RAM). IIRC the board was dated 1986. So it was a weird one all around. Sorry I don't still have it.
@@Reziac The earliest ibm boards to use 72 pin ram was probably 1990 iirl. I know they put copyright dates of 1986 on many ps/2 mainboards, even later ones. The early 286 boards used cards which used pin arrays to plug in and were not like a normal 72pin simm.. I don't know how many pins they were though.
@@wishusknight3009 That's what I thought. But bloody hell, here was that IBM board, it was old and long retired when I got it (about 1994). and yes they were standard 72 pin SIMMs, I still have the SIMMs and they worked in a 486. It was probably used at JPL tho (judging by whose trash it was), so might have been a special model not found on the consumer market.
@@Reziac The model 30 was made for quite a few years and did change specification a couple of times. But I do think it was mostly relegated to business sales by the end of its run for its cheap price. It is possible that the last models used 72 pin simms and were only business class offerings. IBM tried to keep a modicum of standardization across the line.
That is incredible how well the damaged area comes back after cleaning and a polish with the dremel - all the traces crisp and visible again!
What a cool vintage board, a beast for it's time. You took such good care of the restoration. This was a joy to watch
I adopted your method of removing flux from a board by using alcohol with a toothbrush and then using the toothbrush with a paper towel to remove the residue (I use a clean cloth instead of paper towel and throw it in the wash when it gets too dirty). It is a very quick way to clean a board and looks like new afterwards!
You are welcome.
Great job as usual! I discovered your channel a few days ago and can't get enough of it. Also thank you for helping preserve the retro hardware :)
I agree, it's a "magical and satisfying moment" indeed. I have a board which I am struggling to repair which had battery damage, I will follow your advice on that. Great video as usual!!
I learned something new today. Thanks!
Nice video! You were very lucky you could read that BIOS chip even though it was flaky.
The freezing with the CF card is the BIOS software interrupt routine for reading the fixed disk. They likely copied IBM's original routine from the 5170 too closely which will freeze up on drives that are too fast. I go over the problem here:
th-cam.com/video/qO3xrl0XR-4/w-d-xo.html
It is fixable with disassembly and hex editing of that BIOS, but only if someone figured out the interrupt routine and is able to adjust the timing delay. Besides XTIDE, the other solution would be to use a newer 286 BIOS without the problem. You'd lose all those extra settings though, so it's certainly not ideal!
Perhaps they copied the bytes directly from IBM so a little search and replace would work?
Thank you Adrian. Yeah, now where you say that, I remember your video with the IBM and that issue. Somehow I didn't think, that the same bits could be shared with the IBMs original code. I guess, I'll have to dig into that and try to disassemble the BIOS. Thanks for reminding me....
@@necro_ware I'm really bad with x86 disassembly. I bet if we can figure it out or at least find someone to help, then maybe the same fix can be applied to all Phoenix 286 BIOS chips? (Likely similar code with different offsets) Let me point Stewart who fixed the 5170 BIOS to your video and BIOS download. Maybe he can figure it out.
Hmm. this makes more sense than my comment I just made... I surmised it was the cf card being close at the 528mb limit. And it may not have the geometry handling. So a smaller CF might work. I have a 286 that behaves this way. It also uses a dedicated controller. But in this case i would guess you are on the money here.
It should be possible to use IDA Free edition to help with the disassembly.
The magical checking hole card is amazing
Yes! Another repair video. My favorites!
They are so chill.
Die Essigessenz hat mich kalt erwischt. Mega Nostalgietrip. Bin zwar 87er Baujahr, durfte aber trotzdem noch mit solchen Systemen rumbasteln.
Step you missed. Lacquer or transparent nail varnish the exposed traces to prevent the solder traces from further corrosion via air.
Following your instructions I've restored an EFA 4DMU-HL3S board inside of a Solitaire arcade cabinet that had a leaky battery. I had no idea how to do any of this before I watched your video. Thank you very much!
Tip for the future : Changing the power voltage can help read back flaky EPROMs, (some will need < 5V, some will need > 5V, depends on their internal circuits). It was not needed here, but if you ever have a bad one with content you can't find elsewhere this could come in handy.
What a great video! I learn so much watching you tinker with these boards, so many tips and tricks. :)
I've been binge-watching your channel for days now, absolutely love it. Please keep it up! :)
I'd love to see you upgrade this board in the future as you hinted. Especially if it's possible to replace those horrible SIMM sockets, that'd be very educational to see.
Best wishes from Sweden!
Just an extra tip : when you put the board upright after cleaning it with water, make sure the chips are aligned VERTICALLY - due to the surface tension of water, water won't flow between the legs of chips so it can get trapped there. If the chips are aligned vertically, the water can escape from underneath the chip itself without pins or legs blocking the "escape route". If you have chips running in both direction, it may not be a bad idea to change orientation after a while. I also find that a hairdryer can help coax water from trapped pockets.
What a great Video, Thank you sir!!
286 repairs are among of my favourites
My first PC was a 486 dx in October of 1992. 29 years ago. It’s mind blowing how the years past. It meant the world to me. A gift from my mom rip.
Yes, the times fly.... Sorry about your mom :( She obviously gave you some nice memories....
You inspire me to start trying some old things to live again!!
Hallelujah! Another board saved!
Ahhh... I already have the rubber tips for my Dremel tool , but coating the traces with the flux is the key! I didn't know that, but watching the solder chase the fluxed traces was undeniable, and something I'd literally never seen before.
This is all very important to me, as I own a pair of the very rare 25Mhz Harris chip 286 boards w/ 16Mb direct-addressable memory (not EMS) [and w/ soldered battery - ugh!], so I'll probably have to make similar repairs when I try to restore them.
Many thanks!
Great video. Very informative. Thank you.
Thank you for showing this technique in such a detailed form. Your channel is excellent and is also very underrated. Thank you for your shared designs. I plan to produce some Dallas replacements for a couple of SGIs. Brilliant design 🙂
I'm currently troubleshooting a 286 board, and this video is a goldmine of information. Excellent explanations and presentation. Love your work!
Greeting from America's Gulf Coast! I've been watching for about four videos now, and am adding you to my subs list. This was a great troubleshooting path.
Thanks! Can't w8 for the upgrade :) been in computers for as long as I can remember but I started with a 486 sx/33!(later was my first major upgrade, with 9 chips of cache memory as well as going with the dx/33 CPU salvaged from a rummage sale.) I did have an XT but never took the time to learn programming as this seemed to be the only thing to do with these, until the flash card hard drives trick came about, which is exciting! now we can actually play some of those period games on ancient hardware! Cool BIOS trick on the network card too, looks like magic!
love it takes me back to the beginning i still have a hoard in my basement
Awesome work👍
wow.. very nostalgic for me..I remember that Ive been working on those types and similar motherboards and doing those repairs almost 30 yrs ago.. well Im still doing electronics and computer repairs but this does brings back memories.. thanks..
Thanks for the amazing videos. It's nice to see the quality improvement on your videos and new techniques over time.
All your videos are very satisfying and teach us a lot.
Keep up the good work.
I'm new to the channel and dang this is amazing. I approve of using Commander Keen as a testing program. Grats on getting this working!
Наконец то 286 :)
П.С. Я мою платы Mr.Muskul зелёным, смываю, потом розовым, смываю. Далее феном без нагрева выдуваю всю воду, в конце горячим потоком сушу. Ставлю в сухое тёплое место на 1 день. Выглядит как новая.
Ну да, принцип тот же. Я так уже точно несколько сотен плат отмыл
Great video! Your channel is definitely one of my top discoveries of 2021. Keep up the good work.
Wow, TH components!
This is really on the cusp of technology!
Making me want to have one...
Amazing restauration. I have a couple of 386 motherboards that need this kind of work. I'll reference your videos for sure. Great work, thanks for putting it out there.
I love your repair videos.
Retro computing is something i want to get into as i gew up with these old PCs in the 90s.
Yes, i could emulate, but i'd rather have a retro PC :)
Recently found your channel and have been binge watching these repair vids! My favourite type of retro videos to watch.
That tinning of the traces is a good idea!
It's a work of love and also I took the way to repair, maybe helps to get mine working.
Also it's interesting to see what can run with some add ons. I hope you build a pc of this too.
Really enjoy your videos thanks a bunch for them!!!
Your videos are awesome!
Love what you do, love to fix things and you are an artist.
Keep up the good work!
Nice repair once more!
That's so cool how you repaired the traces with solder. It's almost like you painted them on!
One of the best videos about this topic, great work man!
Another great repair video :)
1) I need to be more methodical and patient when cleaning corrosion too. I love your result.
2) I usually use citric acid, this is the acid in lemon juice but in powder form. I make the solution as strong as I want.
3) This faulty ROM chips OMG, I will add this to my tests, thanks for the info!!
4) The two red caps are probably different as these are the only 16v ones (connected to +12v and -12v rails).
I need to recheck some of my broken boards now :/
Thank you. And yes, you could be right about the 16V ;)
Love your channel. Brings back tons of memories.
Seeing this brings back so many memories...
You aré so good and entertaining! And you brought back hapyness to this nice jewel of a mainboard!! Great work! Kudos!! 👍👍
Very nice BlackMagic with network card!
I love the style of this board, so many chips unlike today's basically smooth motherboards
Your videos are so informative! I always learn a few more tricks!
Please make the video about the two BIOS chips
You are the reason i love retro hardware. Love your videos keep up the great work !
Enjoyed the Video, always pleasure to see you fix stuff :) Please put a 287 FPU to Upgrade it!
15:25 YES, please make that short video about BIOS!
Logic board repair is something I wish i learned. I have tons of respect for you guys !!!!!!
Fantastic video. I own a very similar 286 board with onboard IO controller and up to 4MB RAM support. I bought it faulty due to battery damage and repaired it. One of my favorite pieces of hardware.
Beautiful repair good sir!
Good video as always.
I use the same method in washing the boards, except I use blue dawn dish soap. After rinsing with tap water, I give it a final rinse with distilled water and use compressed air for quicker drying. The distilled water helps get rid of impurities that tap water leaves behind for a spotless rinse.
Excellent video, many thanks!!
I love your videos - I cannot wait until next. Great job like always. You are awesome. This is better as movie.
You are such a nerd !!! good work .. Keep it up... Brought me back all the nostalgia !!!!
Always a good watch. look forward to the next one.
Much fun! Was like going back when I learned the IT-Game. Very nice video. Happy it was suggested. Keep up the good work.
Good old days, good, old, days, 286 is what I can remember where I start from.
Good repair!
Yes, It would be a pleasure if you make a video about why some boards have two bios chips! Great content, as usual. Thumbs up for the repair video!
Very nice! Congratulations for this fascinating video!
it's always cool to see old tech like this
wonderful video, thank you
Thank you for the video sir. I was amaze and awe of your work. Love it
Wow ... What.... I salute You, MASTER!
Great Video Like always, nice fix , i still wait for my TL866 II + but maybe next year come :-(
Neat video! always like the trouble shoot process, keeps your brain sharp!
Nice use of the eprom slot on the network card, will have to remember that one. I bet it would also work with SCSI cards or any other where you can add additional ROMs.
Really Great job!!
Sir, Your work is amazing
super satisfying video ❤
What a good video with information that few share.I haven't learned so much from a video in a long time Very good thanks.
21:01 They tend to short or they tant to short? 🤓😉
Cool revival video! 👌
:D
WOW! This brought back SO MANY childhood memories of building computers.... I'm so happy I found your channel! Being that I'm 40 now it's been a LONG time since I had to worry about having 640k lol :D
THANK YOU for making these videos, it really makes me feel like I have SOME use in the computer world and not totally left behind with these damn tiktok gamers twitching all day lol :P (yea, I know that sounded like an old guy complaining :P )
Imagine when you have to worry about having 640 TB of RAM to play games on Windows 2K92
@@nekomasteryoutube3232 you miss aligned orders of magnitude via compounding. If Moore conjecture continues, even by mega-hyper parallelization, 3-dimension intercenects, quantum computation plus whatever new stuff happens.
By the 2090s it will be exa bytes ( 10¹⁸). Or millions of times bigger of ram.
Bitte mehr davon! Grad das mit der Korrosion unter der Tastaturbuchse fand ich sehr wichtig.
10:20: if you want to reduce the risk with salts left behind after washing the board with water, just remove most of it (shake the board), then spray it with distilled water, shake it again, repeat that setp. Then most of the salts are gone. If you still don't trust that method, spray ethanol (96%) on the board which will mix with the water. Shake the mix off, let the board dry.
Great work 👌👏👏
Thank you for your sharing
never saw such a great electronic technician. Respect, and greetings to you !
thanks for the video :-)
Awesome repair. Are you covering the bios IC's with a sticker to avoid accidentally erasing them with ambient UV rays?
yes
@@necro_ware sweet! I remember a co worker at a previous job wondering why he kept having issues and thought the eraser was the only way to wipe them.
Never expected to see a bottle of surig here😂
There seems to be some signs of corruption on second rom ( 19:00 "%opyright" ) so those could cause the hdd issues without the xtide bios.
May be, but if there is a corruption, it has to be very evil, since the checksum is right. There are also a lot of older 386 and 286 mainboards, which don't want to boot from a compact flash card. I never found what's the exact issue so far.
7:10 i was using toilet cleaner liquid and was preety nice and effective but its very agressive and must be quicky neutralised/flushed
...flushed.... I see what you did there...
@@wishusknight3009 xd
Amazing work 👍 I remember our first PC was a 286AT with a 40 MB Hardisk, 1 MB RAM and a 16 colour EGA graphics card 😊
Vote up, nice video clip, thank you for sharing it with us :)
Great repair. You could move the sticker from broken BIOS onto new one using hairdryer. It's just a detail but it just completes such repair.
This makes me want to get a damaged old board and fix it... :D Great presentation. Subbed.
I always loved these 286, 386 boards, fascinating for that time period. i remember the vga card was 4mb.
On 286, 386 more like 256K or 512K. 4MB vga cards started to appear first with Pentium MMX :)
@@necro_ware must be as you say.. i could be wrong. cheers !
Eine Freude zu sehen!
I pull a lot of old hardware from e-waste and I can confirm that using soapy water is just fine on electronics. As long as you wash away all the soap you're good.