 jjoshuaPremium
join:2001-06-01
Scotch Plains, NJ
kudos:3
 ·Verizon FiOS
| Leaky caps Dammit... My XBOX (running MythTv) died. I took it apart and found a leaky capacitor.
This seems to be a pretty common XBOX problem. Here's someone else's picture of what happened:
Replacing the cap was no problem (MFG PN: B0810-2R5105-R Capacitor 1uF 2.5V RAD AEROGEL). But then the XBOX ran for a few minutes and crashed. It looks like the leakage had done some damage to one or more of the surface mounted components like the one marked C7G2 in the picture above.
It's my understanding that the cap was used to power the hardware clock. Since the XBOX runs 24/7, the bad cap didn't cause the crash - it was the slowly deteriorating components that did it in.
Fortunately, I had a spare XBOX in case of an emergency like this. |
|
 CurtesyFlushBababooey, fafafooey, tatatoothy.Premium
join:2002-08-23
Fontana, CA
kudos:2
1 edit | That's Q7G2. A whole 'nother animal than C.
EDIT: Ooops, disregard. I see the mounting pads for C7G2 now. |
|
public
join:2002-01-19
Santa Clara, CA | reply to jjoshua
said by jjoshua:Dammit... My XBOX (running MythTv) died. I took it apart and found a leaky capacitor. This seems to be a pretty common XBOX problem. Here's someone else's picture of what happened: Replacing the cap was no problem (MFG PN: B0810-2R5105-R Capacitor 1uF 2.5V RAD AEROGEL). It's my understanding that the cap was used to power the hardware clock. The board appears contaminated with flux? residue. The cap is likely a supercap 1F/2.5V. Leakage may not be from the cap, but appears to be trapped underneath.
Try cleaning the board with deionized water. |
|
| That board sure looks dirty. I think the op can also try rubbing alcohol, and depending on what components are on the PCB, sometimes it can even be put into a dishwasher for cleaning!! (needs some extra time for drying, though  ) |
|
jjoshuaPremium
join:2001-06-01
Scotch Plains, NJ
kudos:3 | reply to jjoshua
The picture is not mine. It's someone else who had the same problem.
I got my board clean with vinegar followed by alcohol.
Unfortunately, the damage had been done. |
|
|
|
 RX8
join:2004-07-18
Marietta, GA | reply to jjoshua
What you see on that board in not just dirt or flux, the appearance around C6G1, C6g3 /etc are ALL due to the slow leakage of the electrolyte from bottom seal of the capacitors. It is like a cancer & will eventually destroy the board if not cleaned out. Very likely you have several bad capacitors along with other corrosion.
I have seen many many afflicted PCB' on different products & still do. Heat build up tends to aggravate the matter...early generation Nichicons were notorious for this. |
|
