A friend of mine experienced a power surge that damaged his Panasonic Viera TC-P65VT30 Plasma Television. The symptoms are no signs of power and no blinking LED code nor is the LED lit. After taking off the back, I inspected the boards and performed the testing advised on pages 25-27 of the Service Guide for Panasonic Plasma TVs. In ohming out each of the pins on the SS, SC and A boards I didnt find a short circuit to GND. I made these
measurements unpowered with each connector disconnected from the power board. This seemed to indicate that I should replace the main power board.
I did inspect the power board (PDF and photos attached) which showed some damage. Feeling good I ordered a new main power board, plugged it in and experienced the same result. No change. No LED, no blinking, no clicking of either relay, nothing.
WIth the new power board installed, I measured the voltage of connector P6 on the main power board. All pin voltages were 0V except pin 6 which measured 5.06V. I am assuming this is the standby supply.
The voltages on connect P35 were all 0V. The voltages on pins 1 and 3 on "connector" P34 was 15.66V and 0V on pin 2.
I have inspected the A board with a magnifying glass and cant see any signs of damage (like on the power board), although that doesnt mean there isnt any but I didnt see anything obvious.
Any suggestions or ideas would be greatly appreciated as to what the next step(s) is. Thanks!
measurements unpowered with each connector disconnected from the power board. This seemed to indicate that I should replace the main power board.
I did inspect the power board (PDF and photos attached) which showed some damage. Feeling good I ordered a new main power board, plugged it in and experienced the same result. No change. No LED, no blinking, no clicking of either relay, nothing.
WIth the new power board installed, I measured the voltage of connector P6 on the main power board. All pin voltages were 0V except pin 6 which measured 5.06V. I am assuming this is the standby supply.
The voltages on connect P35 were all 0V. The voltages on pins 1 and 3 on "connector" P34 was 15.66V and 0V on pin 2.
I have inspected the A board with a magnifying glass and cant see any signs of damage (like on the power board), although that doesnt mean there isnt any but I didnt see anything obvious.
Any suggestions or ideas would be greatly appreciated as to what the next step(s) is. Thanks!
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