Quadro FX 1000 Repair \ VOGONS

Quadro FX 1000 Repair

Topic actions

First post, by CachoAlpuy

Posted on 2023-09-05, 13:00

CachoAlpuy Offline

Rank Newbie

Rank: Newbie
Posts: 67
Joined: 2020-01-16, 20:31

Hi, im starting to repair a Quadro FX 1000 which has no video output, no fan spinning and the computer beeps during post.

The only two things that i was able to check for now is:
1) There are a few missing caps in the bottom but i'm not to worried about those because those are bypass caps in parallel to other caps.
2) The linear voltage regulator marked in red in the photo gets really hot seconds after turning on the computer.

So i have a few questions in order to start diagnosing this:
1) Is it normal that this regulator gets hot?
2) What is this regulator supposed to supply? I couldn't trace the output to any of the components that i tested
3) What other things should i test?

Reply 1 of 3, by LSS10999

Posted on 2023-09-05, 13:28

LSS10999 Offline

Rank Oldbie

Rank: Oldbie
Posts: 1122
Joined: 2009-10-28, 14:32

Not sure if the circuit beneath the regulator is still okay... A regulator should never be *that* hot. It's obviously fried, as its surroundings are turning brown.

I once had a sound card suddenly stopped working (BSOD) and then it could no longer be recognized, and I found a fried regulator that looked very similar to that of yours after inspecting -- incredibly hot, so hot that the surrounding area has changed color and was visible. I still had that card with me but I haven't really tried replacing the fried regulator, as I did not have the necessary means to replace it and I feared the problem might be more than that.

You can try removing the regulator and test the surroundings with a multimeter... if everything looks good try replacing the regulator with a new one, but it's possible the circuit might have been damaged and the replacement regulator will not last for too long...

EDIT: After looking at it a bit more thorough, the PCB appears relatively okay... I'm not sure how hot your regulator was... if it's so hot that it's impossible to get close to it, then it's indeed not right.

Reply 2 of 3, by CachoAlpuy

Posted on 2023-09-05, 13:55

CachoAlpuy Offline

Rank Newbie

Rank: Newbie
Posts: 67
Joined: 2020-01-16, 20:31

LSS10999 wrote on 2023-09-05, 13:28:
Not sure if the circuit beneath the regulator is still okay... A regulator should never be *that* hot. It's obviously fried, as […]
Show full quote

Not sure if the circuit beneath the regulator is still okay... A regulator should never be *that* hot. It's obviously fried, as its surroundings are turning brown.

I once had a sound card suddenly stopped working (BSOD) and then it could no longer be recognized, and I found a fried regulator that looked very similar to that of yours after inspecting -- incredibly hot, so hot that the surrounding area has changed color and was visible. I still had that card with me but I haven't really tried replacing the fried regulator, as I did not have the necessary means to replace it and I feared the problem might be more than that.

You can try removing the regulator and test the surroundings with a multimeter... if everything looks good try replacing the regulator with a new one, but it's possible the circuit might have been damaged and the replacement regulator will not last for too long...

EDIT: After looking at it a bit more thorough, the PCB appears relatively okay... I'm not sure how hot your regulator was... if it's so hot that it's impossible to get close to it, then it's indeed not right.

It is hot in the sense that it burns your finger one second after turning it on.

Reply 3 of 3, by Zerthimon

Posted on 2023-09-05, 14:30

Zerthimon Offline

Rank Member

Rank: Member
Posts: 228
Joined: 2020-12-23, 10:18
Location: Fortress of Regrets

Measure the regulator for a short on board, then remove it and measure the pads for a short. If the short is gone replace the regulator.

Go to top of page Go to top of page

Back to General Old Hardware