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Silver Strike Bowling 2005 faulty PC
lilshawn:
sorry for the delay, ive been sick with the flu the last week.
usually the biggest culprit of these kind of random boot issues is the 4 small caps under the heatsink ive circled together. but generally i replace al the circled ones.
but i think if you take out some of those 4 caps, youll find them blown out on the bottom where you cant see them.
MrMatt:
--- Quote from: lilshawn on November 15, 2022, 11:19:18 am ---sorry for the delay, ive been sick with the flu the last week.
usually the biggest culprit of these kind of random boot issues is the 4 small caps under the heatsink ive circled together. but generally i replace al the circled ones.
but i think if you take out some of those 4 caps, youll find them blown out on the bottom where you cant see them.
--- End quote ---
Awesome. Thank you.
I've just ordered the missing 22uF and 100uF 25V caps I would need now. I'll wait until I've fully recapped this until I try to turn it on again so will have to wait until the weekend for all of the orders to arrive.
Cheers.
lilshawn:
oh, and as for the oddball 680uF 25V caps, it's fine to change them out for low ESR electrolytics. some of those values in poly caps are almost impossible to find.
it would probably be okay to throw a 1000uf in its place too. all these caps do is filter power... the exact value is not super critical, as long is its better than what's there... (basically nothing) just don't go to overboard or you can blow out a regulator on powerup with the excess load of having to charge up a much much too big cap.
if i encounter something needing to be recapped like a power supply, i would take inventory of what's connected to where, and then figure out what i have.
for example if a 5v line in a power supply has three 1000uf caps and a 470uf (for 3470 total) and i'm out of 1000uf's, i'll go ahead throw two 1500's and two 220's... that way the ESR value of the circuit stays the same (with 4 total capacitors sharing the load) and the total uF (3440 vs 3470) is pretty damn close...and better than the blown out ones in there to begin with.
MrMatt:
Noted. Speaking of Polymer caps, I also have a faulty GT2005 board I gave up with because I assumed the GFX card had failed and I couldn't find another card with a PCI I/F to replace it with.
If I put this card into another PC it doesn't work. It was missing one of the 10uF 16V polymer caps at the bottom of the photo and I replaced it with an electrolytic cap but it still didn't work. I've just ordered 10x 10uF 16V polymer caps to replace all of them on this board but I don't think it's going to fix the card.
Do you have any other suggestions what to do?
lilshawn:
for whatever reason, those video cards can just die.
typically it gets overheated and you can tell if this is the case by the green board turning brown. (especially around the regulator heatsink and the backside of the main GPU die) they are getting to be a rare as unicorn poo.
if you know at all if it worked...maybe... but chances are really REALLY slim. you really got to get these cards before they grenade.
that said, i may have one in my parts box. i'll have a fish around and see.