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Spectacularly blown flat panel SMPSs

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Conundrum
Sat Apr 03 2010, 11:02AM Print
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Hi all.
Just found this one. Pretty much every capacitor has blown, even the mains reservoir (which I have never seen before)

Looks pretty nasty, shame as it was a nice panel.
Only other fault I can find is the double schottky is S/C, which is getting swapped asap.

EDIT: swapped Mr Schottky and monitor now working.

Interestingly these are all the same make, made by Capxon which are known to be bad, nearly every monitor i've seen so far with bad caps has used this make and the undamaged ones are different)
1270316685 96 FT1630 Badcaps1

1270316685 96 FT1630 Badcaps

On a side note, what is it with these bad caps? I have even had them in my Linksys router, caused random problems until I pulled and replaced the lot.

Fixed!
1270316685 96 FT1630 Lcdfixed

Also, why you shouldn't clean flat panels with solvents meant for kitchens... Expensive flat panel go OMGWTFCOBBBQ is what happens. frown
managed to remove the damaged chip from the panel and replace the driver with silver paint, resulting in a solid black bar rather than a solid white bar with multicoloured lines.
A slight improvement (the chip was causing the lines to flash on and off which was annoying as heck)

1270316685 96 FT1630 Lcdpwnad


-A
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Sulaiman
Sat Apr 03 2010, 04:26PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
The rumour is that the electrolyte formula was 'copied' with the help of a former employee of a major capacitor manufacturer - with one missing ingredient. Link2
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MinorityCarrier
Sat Apr 03 2010, 04:51PM
MinorityCarrier Registered Member #2123 Joined: Sat May 16 2009, 03:10AM
Location: Bend, Oregon
Posts: 312
I know someone who works for a photovoltaic power inverter company. They switched to buying less expensive chinese capacitors and transformers. It's turned into a minor disaster for them, using those parts.
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