Re: No image only audio works on Samsung plasma PN64E550D1XZA

Well the new power supply fixed my issue and the tv works. It even works with all my original boards, so it seems it was only the power supply and it didn't take out anything else.

Bad news is I somehow ripped/broke the bottom ribbon cable for the Y buffer board. Noticed after i had installed the power supply, don't know how i did it. So now there is an inch wide black bar at the bottom of the tv.
Pics: [url]https://photos.app.goo.gl/hlsfmG8EYr8Sr9U52[/url]

Is this something I can fix?...

Re: No image only audio works on Samsung plasma PN64E550D1XZA

Fuses were good. Found a burnt up mosfet and possibly a few other damaged items surrounding it. Noticed it by removing the power supply board and looking at the bottom side. When checking the mosfets for continuity on the power supply board it seems they are all a little different.. Am I checking the outer legs to the inside leg and if it has continuity is it shorted?

Here are the pics: [url]https://photos.app.goo.gl/NllzESJBthirbSZo2[/url]

Its the top most mosfet on the center heat sink....

Re: No image only audio works on Samsung plasma PN64E550D1XZA

Any ideas or where to go from here? I think at this point it is narrowed down to a bad power supply, main, logic, or buffer board.

Re: No image only audio works on Samsung plasma PN64E550D1XZA

I ended up testing for Vs with just ribbon cables removed from the buffer boards, and once after removing the whole buffer boards from the x and y main boards, with the same results for both tests.

- Vs at 0 while the tv is plugged in to receptacle and red led indicator light on front of the tv is on

- Pressed the remote power-on button and Vs slowly rises over a couple minutes to about 6 volts.

When pressing power-on I hear what sounds like a relay kicking in maybe coming...

Re: No image only audio works on Samsung plasma PN64E550D1XZA

Ok appreciate the replys, will try that and report back. Can i remove just the ribbon cables from the buffer boards that go to the screen and test or do i need to remove the buffer board at those white connections from the x/y main boards as seen at the left in this pic: [url]https://photos.google.com/share/AF1QipNKv8z_D6Po2_0OKVK_U-7wW7N6jIwROd7Y0Y7cms6N1K7em0FK8IJHMd5uuoekTA/photo/AF1QipOAA6JZnl9t9ii6LsaDNC1-fBuNAYuCsFluQOcO?key=eDFGcWgzel9EUEtqc0g4QzJkZXh0eUNieHlIVnZ3[/url]

I checked out the white square...

Hello,

Samsung plasma PN64E550 made some popping noises when turning on, the audio still works but there is no image on the TV. I have checked the screen for cracks with a flashlight and did not notice any (are cracked panels fairly noticeable?) There is no light at all on the screen, even in a dark room and visually I didn't see any burnt/bulging caps or chips.

I've tested for voltage here and there based on other threads i found and couldn't really pinpoint the problem. Also tried the fast track manual on toms service guides with no luck. And after reading through...

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Hello,

Trying to repair my samsung plasma