Samsung PS50B530S2WXXU...Sound, No Picture

[will i am]

Hi, Looking for help regarding this Samsung PS50B530 plasma, hopefully with the help of some expert knowledge and advise I might get this set up and running in time for xmas, that's if the panel isn't dead. If it is then hopefully I would've learnt something valuable in the process.

Basically I switched the tv on a few weeks ago and there was sound but no picture, I've replaced replaced Y-sus and buffer board together and also the X main. The white label on the back of the plasma panel lists the voltages as (actual in brackets) VS 209 (209)/VA 56 (57)/VSC -200 (-202)/VE 92 (84)

Could it possibly be a dead panel?? Any help or advice will be much appreciated.

Thanks

[tom66]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

The only remaining board is probably the control board. Are the LEDs lit on that board?

Ve is a little low, but shouldn't cause too many problems.

Often with a bad panel there is a loud buzzing sound emitted from the TV.

[will i am]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

Hi Tom, There's only 1 LED flashing on the logic control board (LED2000) while the TV is on, on start up another LED flashes twice (LED2001) but then goes out, maybe this is normal, I know its a risk that it may not work but do you still think I should try another logic control board??

When I turn the TV on there is a what I believe to be a humming noise (like when a tv is on) from both the Y-sus and X-main but definitely not what I would call a loud buzzing noise. After 10 -20 mins Y-sus gets hot but not too hot to touch, X-main is not very warm, SMPS is not very warm either..Forgot to mention there's no OSD Menu and screen doesn't prime at all.

Thanks

[tom66]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

Try turning out the lights in the room - turn out ALL the lights. Then turn the TV on. Do you see a faint glow on the screen?

[will i am]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

I've tried making the room dark by turning out all the lights, definitely no faint lights from the screen.

Thanks

[tom66]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

I've tried making the room dark by turning out all the lights, definitely no faint lights from the screen.

Thanks

That doesn't sound good unfortunately. It still could be a Y sustain problem.

What happened when the TV failed?

[will i am]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

Not sure what happened exactly at the time as kids were watching tv, I came home later that night turned the TV on and I could only hear the sound, there was no picture at all. Removed the rear panel, switched the tv on and there was a faint ticking like noise coming from the Y-sustain, purchased another. Y-sustain and buffer board from a online company along with a X-main just in case I needed that as well, swapped the parts over and the only noticeable change was that the new Y-sustain was humming.

I really don't mind purchasing another Y-sustain from a different company especially if the panel is not dead but is there any other way of checking that the one I have is in fact good??

Thanks

[tom66]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

Not sure what happened exactly at the time as kids were watching tv, I came home later that night turned the TV on and I could only hear the sound, there was no picture at all. Removed the rear panel, switched the tv on and there was a faint ticking like noise coming from the Y-sustain, purchased another. Y-sustain and buffer board from a online company along with a X-main just in case I needed that as well, swapped the parts over and the only noticeable change was that the new Y-sustain was humming.

I really don't mind purchasing another Y-sustain from a different company especially if the panel is not dead but is there any other way of checking that the one I have is in fact good??

Thanks

It sounds a lot like you got a failed Y sustain board.

The faint ticking is a sign of a shorted board = i.e. the board was definitely failed. Then again, usually a shorted board stops the TV from working completely. The new board buzzing could also be a sign of failure, but I'm not sure.

You would need an oscilloscope to test the board.

The problem with these new thin plasma TVs is that the panel is much more susceptible to cracking from thermal expansion.

[cadiman]

Re: Samsung PS50B530S2WXXU...Sound, No Picture

Here is what I would do.

If you have a neon voltage tester for 120 to 480v (buy one they are cheap). Put your finger on one lead then touch the other lead on the upper buffer test point. You will not get shocked I am sure. With the tv on if you have the correct voltage to the buffers the neon light will glow.

I do this for a quick check of the y drive output voltage. It will either be there or it won`t.

I haven`t seen this type. I would also go over with good light all of your connections.

Double check your ribbon cable from the control board to the y drive. If it is not in right you will not have any picture.