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Dell w4201c Plasma No Pic Samsung Guts... Help!

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ck-x:
I have a 42" Dell W4201C Plasma... I have no Pic on the TV... I have pulled the back cover and found that the voltages were not right on the test points in TV... Removed cable from Power Supply to XSUS board and problem persists.. Removed Power Cable to YSUS board and problem persists... Removed power from both boards and I get good voltages on the power supply... I would assume the problem is in these 2 boards... Is there something else I should look for or is there a common failure on these boards like a cap or something? The TV has samsung guts in it... Below are the model #'s... Some schematics would be nice if anyone may have some...  :aggressive:Let me know if you can help...

PDP Panel S42AX-YB01

XSUS LJ41-02758A

YSUS LJ41-02759A

Thanks for any help you can give...

tv tony:
unfortunately there are not any schematics available for z,y boards, test your psu with a dummy loaad to isolate that section
tv tony

ck-x:
What should I use as a dummy load for testing the PSU? I think it was about 175V DC...

tv tony:
because these set suffer from failure under load

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