Repair Marathon 21.04: #5 Update on Gigabyte GA-486VF

[@CPUGalaxy]

Excellent root cause analysis! Unbelievable how much love and patience you put into your stuff. Absolutely well done. as I said already, the best retro repairing channel on KZbin!! Thanks for sharing. Cheers, Peter

[@86smoke]

I like how most of retro techs follow each other on youtube. Just finished watching your TI486SXL2-50 video.

[@Shmbler]

I managed to create exactly such a broken trace on an A500 board when prying out a DIP chip carelessly with a screwdriver. It took me hours to find the cause with the chip on top of it. I've learned my lesson. And you are so right with your advice! Countless times it took me just a night of sleep over a very frustrating problem and the next morning I magically found the right track and fixed it in no time. I think the wisdom to sometimes call it a day comes with age ;-)

[@JVHShack]

Necroware living up to his name! 😃 Great job on resurrecting that mainboard.

[@tommcclintock5019]

I'd bet what you're describing where a solution "comes to you" after setting something aside is essentially a kind of subconscious awareness. You almost certainly saw that jumper previously but didn't consciously acknowledge it. Later, your brain finally caught up and, voila, you have your answer in your conscious mind. BTW, I quite enjoy your videos. They're informative without being overly wordy.

[@R.N.42]

Nice to see that you could fix this board as well. And with what a twist :) Great conclusion to am awesome repair marathon. Very satisfying and heart warming to see these old beauties coming back to life! Great work as always!

[@darthtripedacus1]

This is well beyond my skill level. You do amazing work sir.

[@PJBonoVox]

Man, I bet it was nice to get closure. Good work!

[@necro_ware]

I promised to come back to it, so there was no excuse :D

[@lisandro3614]

Impeccable work, and great advice. If you know there's an error somewhere but you can't find it, «sleeping on it» usually works very well. Sometimes you just blind yourself...

[@cburgess5294]

I don't know why your videos don't have more views - they are interesting and well-produced. I hope more people discover your channel and your subscriber count grows.

[@necro_ware]

Thank you very much. Everything needs its time, I guess. It is not more as easy to reach the audience on YT as before, so it can last longer. But in the last days, the numbers improved quite a lot. I'm happy how it develops and very glad, that you like the content as well.

[@Alex4SiliconValley]

Thanks for following up on this cache problem. I have the same motherboard and it has a cache problem too. It does not see any cache. I suspected a bad connector. I will have to revisit it with a multimeter and check for dead pin connection.

[@Xaltar_]

Awesome job, nice to see you got this one up and running again. The right tools and a good eye make all the difference.

[@netraider0]

Truly great video and content, as all your previous videos! 👍 Trust me, if you keep up with this quality, you'll soon be one of the most popular retro computing channels on KZbin. Btw, this is my first comment on any KZbin channel ever!

[@necro_ware]

Thank you :D I guess, today it needs more, than just a good content to make a channel popular and since I don't do much about it, I don't think, that it will ever fly.... anyway, I am already happy, that so many people like it. Cheers and congratulations to your first comment ;)

[@mrvellu]

amazing work! Sometimes the most obvious problem is the hardest

[@rodhester2166]

Awesome, was great to see you found the issues and were able to repair them. cheers.

[@robbirobson7330]

i also bought the same logic probe its really useful

[@denyda1754]

Отличный ремонт.

[@necro_ware]

Спасибо большое!

[@tomaszgorazinski7018]

Hi Necroware, „Repair Marathon” is grate series! It’s been a pleasure to watch, how you bring back those old mobos form almost certain dead. Please don’t stop and keep them coming! Also great work and logical problem solving approach with step by step testing components technic! I have one favor to ask, that is could you point me on that pulse probe that you using, I thinking on getting one (UE located store will be perfect). Also maybe you will consider an episode on hardware/ equipment and components (flux, wires etc.) that you use in your workshop? I believe that could be very interesting. Thanks in advance and regards from Poland!

[@necro_ware]

Hi Tomasz! Thank you very much. I don't remember where I got my logic probe, I guess from China. You can find it on Ebay or other stores under the name LOGIC PROBE LP-1. It costs just around 5-8€, depending on where you buy it. And in regards of hardware/equipment video, I thought about it already, but I'm actually not using a lot of special things. Everything is cheapo no name stuff. I actually don't care about materials I'm using too much. I heard and read endless discussions about solder, flux and other stuff from people, but I don't participate in such discussions. I just use whatever I have at hand and it works as you see in many of my videos. Even for dense SMD soldering, like Voodoo I just used cheapest no name materials from China.... Best Reagards!

[@XtremeKremaTor]

Hey. Well done. Mistakes everyone cam make. What matters is the final effect

[@mndlessdrwer]

Your approach is very similar to mine when encountering a situation where you have a motherboard with optional configuration pins. I always want to have all of the optional pins installed for jumpers and I want as many chip solder points to be equipped with sockets where possible to make future adjustments easier.

[@inkrpen]

Great job troubleshooting the rest of the issues!

[@jozefzahradnicek9619]

Wau, wau, wau...You are amazing. Thanks for sharing these knowledge.

[@dalecomer5951]

Bravo!

[@craigkarsten6719]

Great job. As always very informative.

[@necro_ware]

Thank you!

[@chazbotic]

that's some crazy bad luck to have damage through the socket frame! but very good investigation and repair. i have a bigger issue with a mainboard that has the all-plastic SIMM socket and they are in such fragile shape that i will need to source 4 of them for my repair. even after replacing just one socket, i still do not pass memory check, so i will examine the traces more closely for physical damage - i might be "lucky" that the fix is something simple like that.

[@ted-b]

Excellent, love your videos!

[@86smoke]

Congratulations on finding that broken trace - it is not easy to spot one, especially under the socket

[@zarkeh3013]

I haz a same or similar board! and I removed the keyboard controller ... ungracefully to replace with a full size one that I can hack in a PS2 mouse port. I stopped at the ruined removal and put it away, a few years ago. NOW! ah knows it'sa gonna WORK with that jumper change! and also now, my skills and tools have vastly improved! heh, no more ruining vintage IC's that ruin themselves for me!

[@DxDeksor]

Great job ! I actually thought of the jumper thing, but I couldn't see one so I thought you were out of luck. I guess I should have pointed that out anyways :D You made me buy a logic probe as well :)

[@necro_ware]

Thanks Deksor. Yes, the logic probe is worth every cent :)

[@wittonleung8732]

Yes！I do have an OCTEK HIPPO 10 mobo just can not boot into DOS with addon L2 cache IC for a long time. Now I have cule to do something again. Thanks a lot

[@tiemanowo]

3:13 why not just solder a jumper headers if you already had it de-soldered? :) ps. nice video as always

[@necro_ware]

Thanks! I thought about to use a jumper, but decided to go without, since jumpers at 14MHz are may be not the best idea. Probably it would still work, but since I hopefully will never touch it again, I guess, it's ok just to solder it.

[@tiemanowo]

@@necro_ware Yeah, on the second thought, you are right. Probably nobody will never touch this again :)

[@DeepRafterGaming]

well done mate

[@OllyK121]

@necroware - I have a similar issue on boot. It hangs before it can boot from floppy. Sometimes it tries to boot from the floppy but it says boot failure - I know the boot disk is good. Tried different floppy drives and cables. Does disabling L2 cache in the BIOS bypass any bad cache chips? I plan to remove them all soon and check traces

[@catriona_drummond]

after overlooking 4 different defects on some IBM AT board I bought, I made it a habit to examine every incoming mainboard or card for at least 10 minutes with a magnifying glass to spot dodgy things. It is somewhat effective, I am still missing things though.

[@necro_ware]

I always do and always overlook something :)

[@Tunguska82]

Thx for the video! I learned a lot!!

[@necro_ware]

Thank you too!

[@RZ296]

Your videos is brilliant. Greetings from Russia!

[@necro_ware]

Огромное спасибо, очень рад, что видосы вставляют :)

[@RZ296]

@@necro_ware ух ты, наш человек!

[@BlackDragon-xn2ww]

While you were at it you could have put pins with removable jumper on that keyboard settings solder wire seems a bit more work I seen pc chips boards with them all over the board for different settings

[@necro_ware]

Yes, but I don't like to send 14MHz over a jumper and I probably will never need to change it ever again. So a wire is just fine.

[@ctiborkoza8944]

schönes Video, du hast goldene Hände, du kannst alles reparieren, ich freue mich schon auf deinen E-Shop :))))

[@necro_ware]

Vielen Dank! Das mit E-Shop ist ja erst Mal nur eine Idee. Ob es kommt, ist nicht klar. Wegen Bürokratie und Steuern, weiß ich noch nicht, ob es sich lohnt.

[@ctiborkoza8944]

@@necro_ware Ich kenne das ganze System mit der Bürokratie der ganzen EU und mache sie unmöglich, tolle Projekte für eine solche Community wie wir sind zu unterstützen, wir beschäftigen uns zum Beispiel mit Retro-Hardware und macht uns glücklich, was traurig ist, dass die Leute das nicht verstehen, was für uns bedeutet.

[@diewinkelwaage4646]

@@necro_ware Hallo. Auch von mir Gratulation für die gelungene Reparatur. Eine Bitte habe ich. Wäre es möglich, eine Auflistung mit den Namen/Modellbezeichnungen und ggf. auch Bezugsquellen der verwendeten Werkzeuge/Maschinen zu bekommen? Speziell interessieren mich die Entlöt-Pistole und der Logik-Prober. Vorab schon mal vielen Dank.

[@PicaDelphon]

I loved this Board, they ran good, Max cache and some Intergraph Voodoo cards, then the AMD Chips/Intel Wars that was Smart and Stupid at the same time, I Foprget the VLB video card but it was not cheap back then.. But yea, Open GL was a big thing way

[@Stratotank3r]

Super klasse. Wieder verdammt viel gelernt und deine Einschätzung mit der Pause, wenn etwas nicht klappt, kann ich bestätigen. Mache ich auch so. Wäre total super, wenn du mir noch sagen könntest, ob meine E-Mail Dich erreicht hat.

[@necro_ware]

Vielen Dank! Ja, tut mir Leid, Deine Email ist in der Welle, die ich über YT bekomme komplett untergegangen. Seit dem ich die Reparatur-Marathon Videos veröffentlicht habe, werde ich mit Reparaturanfragen bombardiert. Ich antworte Dir auf jeden Fall noch per Mail, sorry.

[@Stratotank3r]

@@necro_ware Danke für die Antwort. Freue mich auf Deine Nachricht. Werde mich an WE wieder mit dem Board beschäftigen. Neue Sockel, Widerstände sind schon da. Brauche noch einen 50MHz Quarz. Danach muss ich erstmal prüfen, welche Bahnen wohin laufen und beschädigt sind.

[@K10driver]

Nice Job again!

[@atheatos]

That was a very nice repair :)

[@phanominon]

Why didn't you put in jumper posts for the KB clock choice? Then you could run either.

[@necro_ware]

I already answered similar question below. First if all, I don't think, that I'm going to change it ever again. Second, I prefer not to send 14 MHz over a jumper, if not absolutely needed.

[@blackIce504]

what your saying is a good practice but we need a special box that the wife does not touch and throw away because its not working.............the only solution i was able to find is to say its all working, now i don't know which box is which.......LOL. love your videos keep it up.

[@necro_ware]

LOL :D

[@Dextermorga]

You should change the color of the nail polisher. It looks like corrosion. In a few years, it could cause confusion 🙂.

[@run4restrun259]

I'm think this trace was broken than some one try to release chip from socket)

[@LambofGod69]

Ah yes an open in a wire. The worlds most annoying thing to troubleshoot :)