Possible bad caps on 7800GTX?

[TerraPhantm]

Hi, recently, my 7800GTX has been showing extremely garbled pictures. Initially when this problem started ,the card refused to output video when using DVI-D, but with a DVI>Analog converter I was able to get video (but extremely garbled). I was desperate and flashed it to a 7800GT. I now get output on the DVI, but the image is still extremely garbled. I'm wondering if there's any possibility that I have bad caps. I've attached pictures of the 4 cylindrical capacitors my card has. Thanks in advance

[TerraPhantm]

Re: Possible bad caps on 7800GTX?

argh, I just realised I put this in the wrong forum , can a mod please move it to "Identifying Bad Capacitor Problems" for me?

[dood]

Re: Possible bad caps on 7800GTX?

Wouldn't that card still be under warranty?

[TerraPhantm]

Re: Possible bad caps on 7800GTX?

Well I would RMA it, BUT (here's where I really feel stupid), I misplaced the cover for the heatsink that guides the airflow through the fins. I initially took it off, because I mounted a fan underneath it which reduced the cards temperatures by 20*C. So unless I can aquire the faceplate to an MSI gtx, or somehow find mine, I can't really RMA it.

[linuxguru]

Re: Possible bad caps on 7800GTX?

It's probably not a capacitor problem on the card (the caps look OK), but it could well be a PSU or motherboard cap problem causing poor voltage regulation. Check the PSU first.

[Mustang]

Re: Possible bad caps on 7800GTX?

I gather by 1 of your other posts that you o/c. Did you push the GPU, Mem or AGP buss a bit too far? You reflashed the bios to a lesser spec and that seemed to help a bit. Have you tried to underclock the GPU and/or memory to see if the problem diminishes moreso?

[TerraPhantm]

Re: Possible bad caps on 7800GTX?

It's probably not a capacitor problem on the card (the caps look OK), but it could well be a PSU or motherboard cap problem causing poor voltage regulation. Check the PSU first.

I don't think its either mobo or PSU, because my 12V rail stays at 12.00V-12.01V even on full load (I checked this with a DMM), and the video card I'm using currently (an X800Pro) has no problems whatsoever. Also I had a friend test my 7800gtx and he had the same symptoms. My PSU is an OCZ PowerStream 520W.

I gather by 1 of your other posts that you o/c. Did you push the GPU, Mem or AGP buss a bit too far? You reflashed the bios to a lesser spec and that seemed to help a bit. Have you tried to underclock the GPU and/or memory to see if the problem diminishes moreso?

I do OC, the videocard is PCIe, and I didn't touch the PCIe frequencies. I did have the card clocked to 500/1390(430/1200 is stock, 7800GT is 400/1000). I would try reducing the frequency farther, but I have trouble navigating windows with the way the video card currently outputs video.