LG 50PX4D Plasma - Short on 6V

[dammert89]

Hi everyone.

I used the forum to figure out my problem on my plasma tv. It turned out to be the Z-Sus board (6871QZH044C), specifically the ER IPM. Ordered the Z-SUS off ebay.

I then decided to check my Vs, Va and other voltages. I heard a *pop*. I accidentally shorted my red probe of the multimeter between the 6V and GND pin as shown in the pic. Fuse is still good (top left), I would like to know what you recommend me to do? I would only like to order a replacement board if its my last resort.

I have no pics of the board at the moment but here is the exact same board (thanks ebay), All of my caps appear to be normal. and don't see any visible damage. What is most likely to be shorted? the 6V voltage regulator? Caps?

PSU model: 6709V00001A
Vs: 193V - Before *pop* it was 193V
Va: 60V - Before *pop* it was 60V

Let me know if there is any other info you need? I will take a high res photo later today.

Thanks in advance

[dammert89]

Re: LG 50PX4D Plasma - Short on 6V

Ok so I tested Stby and AC_on. Both have > 4V. RL_On does not have any voltage or spike. Any ideas?

[dammert89]

Re: LG 50PX4D Plasma - Short on 6V

So relay turns and power supply comes on. Vs Va and a lot of the other voltages are not stable. Not keeping its voltage. Jumping around. Could it be the bridge rectifiers?

[dammert89]

Re: LG 50PX4D Plasma - Short on 6V

Hi guys.

I was told by a friend that it is most probably the capacitors. None of them look bad though. Would the caps really cause the voltage to be so unstable? And can a jump between 6V and ground cause the caps to go bad?