Re: 8800 GT with bad caps, i think
I mean in the store, the only caps they got in there were those that i put in the card, no matter ESR, those were the only ones, in others stores is the same the only thing that changes is the manufacturer but same values for the caps
anyway nevermind, i found the problem, is the transistor and i don´t think i would be able to found a replacement here.
Thanks for your help.
letterpost
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Last Activity: 04-19-2011, 05:43 PM
Joined: 03-02-2011
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Re: 8800 GT with bad caps, i think
Hi pcbonez,
I see what you saying. please have patience, i´m not an electronic engineer, i just like this but it is hard.
I choose EEZ on the link because that is what it looks like the one i got, but i really dont know for sure, all i know is it is not solid elcon EPL and it is not solid at all, i´ll take another look to the cap to see what it is. in the store i showed them the card and ask for something to replace those.
So if the black out problem is because of the diference in the specifications...Last edited by letterpost; 04-19-2011, 09:01 AM.Leave a comment:
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Re: 8800 GT with bad caps, i think
well, samcon electrolytic cap is exactly what i got.
i think is this.
i couldn´t found caps for the 16 v 180 uf so i replaced them with 16 v 220 uf samcon. all electrolytic.
yes, "they said i was maaaaaaaaaaad, but it works.... It WORKS!!!!" the board now is my own frankenstein. lol
anyway, achieved 10 hs overclocked on atitool. but after that sometimes i experienced some suddenly screen black out and must reboot. thats strange because that only happend when the pc is in use...Leave a comment:
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Re: 8800 GT with bad caps, i think
yes, i just leave the caps I was gonna replace.
the only problem now is i cant put back the cover of the heatsink, the new caps are too big and i cant get anything smaller here, maybe if i put them in the back of the PCB it will fit back in. I´ll see how it goes.
for now is 1:21 hs with same overclock and no cover.Leave a comment:
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Re: 8800 GT with bad caps, i think
i can't believe it, I CAN BELIEVE!!!!!!!!!
I FIXED IT!!!!!!!!!!!!!!!!!!!!! IT IS WORKING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 
I have replaced all capacitors (except the small ones) the shorted transistor and I cooked the PCB again just in case, and it worked.
I still cant believe it!!!!!!!
Thanks PCBONEZ thank you very much.
Last edited by letterpost; 04-18-2011, 08:59 PM.Leave a comment:
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Re: 8800 GT with bad caps, i think
do you think the 16 v caps are bloated too (the middle size)? i didn`t replace those. the small ones look fine, they are also 16 v with 100 uf.Leave a comment:
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Re: 8800 GT with bad caps, i think
thanks for the tip, i'll check it, didnt know it. it might be useful
these are the best photos i could get.
the 4th one is the dead video card and the nichicon caps.
I have replaced the capacitors and the transistor. the transistor again seem to be in short right after i installed it, so it must be the pcb. and again the same result. pc beeps indicating video card problem.
i`m out of ideas.
i guess i`ll go for a new card....Leave a comment:
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Re: 8800 GT with bad caps, i think
well the dead transistor is this
[url]http://doc.chipfind.ru/html/aosmd/aod412.html[/url]
hard to find something similar in my country
anyway i have two choices:
1 ) [url]http://doc.chipfind.ru/html/stmicroelectronics/std17ne03l.html[/url]
easy to mount. but i dont know if it will hold the power
2) [url]http://doc.chipfind.ru/html/irf/irfz46n.html[/url]
hard to mount, too big. but might hold better the power.
...Leave a comment:
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Re: 8800 GT with bad caps, i think
i took a shot and replace all 4 big caps with:
1 LF 1500 uf e8x4 which i think is a Nichicon as pcbonez said.
2 FJ 1500 uf 6.3 v
1 Ketuo 1500 uf 10 v
as you can see is a real long shot, and i still have the same result, the pc starts but no video. so i start checking the transistors and one seems to be in short between the outer legs. should have checked this from the begining.
The transistor is a D412 it has an A inside a circle, the rest of the readings are bt747n.
ill look for...Leave a comment:
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Re: 8800 GT with bad caps, i think
so i suppose they dont take enough care to their product neither.
the caps don´t look like bad quality, but i think they might be damaged.
i´ll look for another camara to get a better picture.
Thanks a lot.Leave a comment:
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Re: 8800 GT with bad caps, i think
GOOOOOOOOOOOOOD GUESS!!!!!!!!!!!!!!! pcbonez
do you think i could use the one i told you before to replace them? the Ketuo 1500 uf 10v
i still cant belive you found it!!!Leave a comment:
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Re: 8800 GT with bad caps, i think
I understand.
this is the best i got so far. i´ll try to get a better camera.
the 4 big ones are those i mentioned.
Thanks for your help....Last edited by letterpost; 04-16-2011, 05:07 PM.Leave a comment:
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Re: 8800 GT with bad caps, i think
yes, i know, i tried, but i couldnt get a good one to show it clearly.
i would replace them inmediatly if i could, but the problem is i cant get solid capacitors in my country. i was wondering if a Ketuo 1500 uf 10v would work. even with the problem is that it is an electrolitic capacitor.
i also have two more solid capacitors on another dead card
1- LF 1500 e8x4
2- LF 330 C884
i was wondering if they could help too, to replace the others.
what do you think?Leave a comment:
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8800 GT with bad caps, i think
Hi guys, im from argentina. I have a question
i have a xfx 8800 gt graphic card which i had to cook for 10 minutes because it was showing some strange lines in the screen. it work back again for around six month and now it doesn´t start. the pc boots but the fan start but theres no image. so i took the card off and it seems to have 4 big solid capacitors a little bulged. the readings are EPL 1500 2.5v.
i believe they are a little bulged because the top is not flat and it is not symmetrically bulged, but the have no visible perforations on them.
what...
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