Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Actual original resistor value per my Fluke is 6.1 ohm. A bit out of spec. from 5.6 ohm
I did replace gate driver as a matter of course. Did not test original device.
Yes, devices were secured to heatsink with thermal paste. Gate driver is SMD SOIC. I used my Hot Air Rework workstation to ensure ground pad was appropriately soldered to the board.
The heatsink for the two devices was hot enough to sizzle the moisture on my finger. So devices were overdriven or heatsink is undersized.
Not sure how to...

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

I also was presented with a Panasonic TC-P50U50 Plasma with the (in)famous 8 blink syndrome.
I noticed scorch marks on 2 SS board mounting screws: the top, and the one near the Vsus connector.
Based on scorch marks, service manual flowchart, the great info on this forum and a technical bulletin (TB-13-02) from Panasonic, all suspicion fell to a defective SS board, specifically: Q051, D041 and R051.
The gate resistor (R051) teseted fine, however, the diode and IGBT were shorted.
These parts were replaced...

Re: New Members - please post your introductions here

Hello Everyone...
My name is Anthony, Tony to my good friends.
I've been interested in Electronics when I discovered sticking wires in wall receptacles makes for a great light show. (Please don't do this!)
I've worked as a hardware engineer for a three letter computer mainframe manufacturer, system architect, programmer and network engineer for a large bank in NYC. And now have my own shop building custom embedded microprocessor based devices and saving our landfills by repairing consumer electronics.
...