Samsung LNT3242HX/XAA Power Supply Issue

[kevinm34232]

Re: Samsung LNT3242HX/XAA Power Supply Issue

Those parts were burned, and the TV was sold soon after.. never heard anything back about it, sorry..

[Dangermouse1]

Re: Samsung LNT3242HX/XAA Power Supply Issue

Just an update on my LNT3242H...
After some further searching, I found someone with the same issue who claimed the adhesive used can become conductive as it degrades. So I went ahead and scraped away the adhesive on the resistor/caps (and elsewhere on the board, touching any other leads), and sure enough underneath there's a black scorch mark on the board between the leads of the fusible resistor to the small cap. Hard to test the small ceramic cap without removing it, so I tried replacing only the resistor to test it out, and the TVs back in the land of the living!

I know the damage to my TV may not be the same as others, but seeing how this adhesive can cause failures, it does seem likely that's the real culprit. Also, simply put, if the large capacitor was really leaking, it would have leaked in a different direction than up/sideways towards the resistor because of how the board is orientated. In the picture attached, when the board is installed the section with damage would be the top right of the large cap. (ie. rotate the pic 90 degrees counter clockwise.)

Pic included to show the mark on the board once the adhesive was removed. Plus before shot with adhesive still in place.

Hope this is of help to someone else.

[jlbrown1]

Re: Samsung LNT3242HX/XAA Power Supply Issue

Replaced those 3 components (main cap CP803, high voltage cap CM810, and resistor RM801). TV Powers up now and is working!

Sorry to resurrect a really old thread. Kevin, do you remember where you bought these? I need CM810 and fusible RM801, but I am not sure exactly where/what to purchase.

Thanks!

Jason