Re: Samsung PN43E450A1F 450 series no video

Just to close the loop on this, the new board came in and the display is working perfectly. I still don't know what the actual cause was or what was wrong with the old board though. Thanks for the help!
Cheers,

Dan

Re: Samsung PN43E450A1F 450 series no video

Ok, so I have another X/Y board on the way--anything I can/should check before installing the new board to ensure I don't fry it?

Thanks!

Dan

Re: Samsung PN43E450A1F 450 series no video



I am seriously considering it. What has held me back so far is that I might be missing an underlying cause and end up cooking the new boards as well. I don't have any issue replacing the boards, I'd just like to ensure that I am fixing the right thing instead of throwing parts at it.

That said, will replacing the Y and X main address any issues that would have caused this? Also, I *think* this display has a combined X/Y board--left side hooked to the buffer. If this is not the case, which one is the Y?...

Re: Samsung PN43E450A1F 450 series no video



I replaced the cap--no change in symptoms. I'll search around to see how to test the the IGBTs. Of note, I found a couple spots to check Vs--pin 8 at the top of the X/Y main has ~16 volts, pin 7 has ~14. Not sure if that means anything, but I read somewhere that the Vs up there should be in the 200v neighborhood.

Thanks for the help!

Dan...

Re: Samsung PN43E450A1F 450 series no video

Bump... any ideas?

Thanks!

Hi folks!

First off, I am a super noob--sorry in advance for the dumb questions.
Second--I have been searching around for the last couple hours and found that this is an excellent site and that I am a bit over my head.

So, The TV in question is the 450 series samsung from 2012 or so. The sound works fine but there is no video at all. I have a green blinking light on the logic board which I *think* means the main board is ok. X/Y main on the left side has a blown little blue thing which I think is a small capacitor--see pic below. When I measure Vs to ground...

Re: New Members - please post your introductions here

Hi folks,

Diesel mechanic who ended up preferring a fluke meter over a big freaking wrench. Here to learn!

Cheers!

Dan