Re: Samsung Model LN40b630N1FXZA Repair

Can't get the TV to turn on again.

Measuring the PS_ON again -- it is alternating between 0.89V and 0V -- at a rate of once a sec.

Re: Samsung Model LN40b630N1FXZA Repair



i received the main board from ShopJimmy today -- it is supposedly good.
Exhibits same problem as before.

I'll see if I can get TV to turn on again and re-measure PS-ON....

Hello --

I have a Samsung Model LN40b630N1FXZA I am trying to repair for a co-worker.

Symptoms:

It will occasionally power on -- but will not stay on very long (10-15 minutes) -- and will not re-power on afterwards.

I purchased him a recap kit on ebay for the BN44-00264A Power Supply Board.
Which replaced the caps, QP801S, QP802S, and UP801s (Power factor correction chip).

Still same problem.
Probed around Power Supply voltages -- the +5VDC Standby looks good at 5.18V.
No main 5vdc or 13vdc -- which...

Re: New Members - please post your introductions here

Hello --

I'm from Columbus, Ohio and have been into electronics for many years. I have a passion for vintage audio equipment (silver faced receivers and vintage speakers -- mainly JBLs).
And as you can probably tell from my user name -- I love to brew beer too.

I ran across this forum because I am trying to repair a LCD TV for a co-worker -- it looks like there is quite a bit very useful info here.

Cheers!