Samsung PS50B-450B 50inch Plasma x-main faulty

[avkdm]

Hi Guys,
New here, just read up on these plasmas on this forum, and came to the conclusion after troubleshooting that the x-main is faulty.
I inherited this tv for free so was wondering if its worth fixing.
When the x-main is disconnected from the power supply, the tv starts as normal, I can see a picture/hear audio and can navigate with the remote as normal.
When the x-main is connected just get the power supply constantly clicking on and off (relay)
Now I checked out the board and there is no obvious swelling/leakage damage to capacitors.
I can pick up another x-board for around $70, but am not sure if the x-buffer may be broken as well. Is there any way to test or is it uncommon for the x-buffer to go?
Thanks in advance.

[Alastair E]

Re: Samsung PS50B-450B 50inch Plasma x-main faulty

No such thing as 'x' buffer....

That board you're calling 'x' buffer is just a connection board to panel tabs with nothing much on it anyway....

I'll be IGBT's short on X-Sustain, dragging down Vs hence psu shut-down--not caps...

[avkdm]

Re: Samsung PS50B-450B 50inch Plasma x-main faulty

No such thing as 'x' buffer....

That board you're calling 'x' buffer is just a connection board to panel tabs with nothing much on it anyway....

I'll be IGBT's short on X-Sustain, dragging down Vs hence psu shut-down--not caps...

Thanks for the info,
I am a noob, so I will just get another board as I am guessing thats its not easy to troubleshoot/fix the IGBT's? thanks

[avkdm]

Re: Samsung PS50B-450B 50inch Plasma x-main faulty

Before I go ahead and order the parts, with x-sustain disconnected the picture is dull and lifeless, and lacks any colour to speak of, is this normal or does that mean the y-sustain may be faulty also? Unfortunately all I know is the previous owner said the picture was good before the fault happened.

[Alastair E]

Re: Samsung PS50B-450B 50inch Plasma x-main faulty

Quite normal with X disconnected/not functional, set will give dark pinkish noisy picture, often with odd colour reversals--but it will function...

[avkdm]

Re: Samsung PS50B-450B 50inch Plasma x-main faulty

Before I go ahead and order the parts, with x-sustain disconnected the picture is dull and lifeless, and lacks any colour to speak of, is this normal or does that mean the y-sustain may be faulty also? Unfortunately all I know is the previous owner said the picture was good before the fault happened.

Quite normal with X disconnected/not functional, set will give dark pinkish noisy picture, often with odd colour reversals--but it will function...

Great- thanks for the quick reply, I will purchase a replacement board!