Samsung PS43D450A2 with arcing/crackling sound under X-electrodes

[Ijaz Ahmed]

Hello Everybody

I have this PS43D450 Samsung Plasma with a strange problem which I haven't found a solution or even some mention of such a problem on the forums/internet.

This TV when powered up, starts arcing (under the X-Electrodes or X-Flex cables) with loud popping sound and there does not appear any picture or even glow on the screen. It just keeps arcing. The Arc travels from panel glass to the back metal chasis, under the X-electrodes.

I disconnected all X and Y electrodes (flat brown cables) and turned on the TV. In this state, I have observed the following.

1) Green LED on control board blinks every 1 second (which seems normal)

2) VS, VA, VSC and VE are all normal (as per panel sticker)

3) Then I turned the TV off and connected X-Electrodes and only one (top) Y-Electrode and then ran the test pattern.

4) Test pattern started on upper portion but many pixels were not coming ON. After few minutes of running the test pattern, many pixels started turning on.

5) If I attach more Y-Electrodes, the arcing starts under the X-Electrodes. With only one Y Electrode, there is no arcing except when you power up the set and before the start of test pattern.


What could be the possible reason ? I haven't seen this kind of problem before nor anybody else mentioned this kind of issue with a plasma TV.

Help and guidance will be highly appreciated.

[Alastair E]

Re: Samsung PS43D450A2 with arcing/crackling sound under X-electrodes

IF you take the Panel Out of the Plastic case--You'll see that the tab has failed where it attaches to the glass, the copper/gold/grey of the tab/glass/conductors will appear burned....

Ive seen this Twice--Both sets--On the same day--Although, its Not a very common fault--That was a VERY bad day!

Unrepairable unfortunately--Although--As its on the X-SUS side, all the conductors are connected together, so you Could try conductive paint, but doubt it would last long with the extreme currents passed....

[Ijaz Ahmed]

Re: Samsung PS43D450A2 with arcing/crackling sound under X-electrodes

Thanks - under the circumstances, that makes perfect sense.

You have seen two such sets while I got 3 of them. All Samsung, apparently having same fault i.e. tab bond failure on X-SUS side.

I will take out the glass panel tomorrow and do a close up examination. Will post what I find there.

Thank you again.