Re: Sanyo DP46849 Won't Power up

Thanks for the guidelines and suggestions.

I'll ask the moderators to move my message, to the correct area (with pics. etc. as you suggest).

Thanks,

Kevin W

Hello all

I have a Sanyo DP46849 LCD TV which will not power up. The pwr supply has 5V and the green light will come on when the "on" button is pressed, but the screen remains dark. Passing 5V to the BL ON line causes the backlights to flicker, but they will not "come on", suggesting a safety shutdown (?).

Does this sound like bad caps on the power supply or is there something more ominous at work here?

Any input would be welcome!

Thanks,

Re: Prima (Samsung) 42" Plasma no Pic/Sound

Here's an update for the benefit of others who might be reading this thread and who have this (or a similar) TV:

I switched the 782-PH42T8-690B and 782-PS42T9-550B video boards, but I still had the same problem. ($100 experiment there)

Changing out the LJ92-01270A did the trick, for only $30, and I now have a working Plasma TV again!

And: If ever those two video input/controller boards fail, I'll be ready!


As a final note: I had no sound output through this whole...

Re: Prima (Samsung) 42" Plasma no Pic/Sound

Well, let's hope for the best then! I don't care if the firmware decides that the TV is Polaroid, so that's OK. I just hope the boards recognize each other, since they're the same revision letter?

Re: Prima (Samsung) 42" Plasma no Pic/Sound

Thanks to PlainBill and Pelota for your quick responses and suggestions.

I checked the Y-buffer boards per the Coppell website, and they both appear OK (i.e. high resistance in both directions at the power connectors).

I also tried an analog input to the main signal board from my DVD player, but again, no sounds to be heard.

I D/L the S42AX-YD01 manual from scribd but the boards it describes do not match the ones I have, (i.e. no LED's on my PS and no DIP switches on my Logic Board) so...

Hello anyone who cares! This is my first post here....

I have a Prima 42" plasma TV (Samsung display and boards), with no picture or sound. Model PH42T7.

The PS Board is a LJ44-00092C
Plus 3 other Samsung boards:
LJ41-02758A
LJ41-02759A
LJ92-01270A

and 2 Pixelworks boards:
782-PH42T8-690B
782-PS42T9-550B

The standby light comes on when the TV is plugged in, and both the remote and the front panel will switch the set "on" (the red led goes green) followed by the relay "clicking"...