Facing TV Problems? Ask a TV Technician.
Usually the SS board causes the 6 blinks, not the SC board. Have you watched the front of the plasma panel to see if it lights the panel first? Did you check the power supply to see if you have your 15 Volt supply working?
I have a another SC board and SS board coming this week. The service manual troubleshoot chart only indicates replace both
Make sure you replace BOTH before applying power. Some chassis warn you about that issue. That's because the 3 second shutdown pattern occurs when the SC board goes bad and hurts the SS board too.
You see the SU/SD board pair connected to the SC board? Same thing with those pairs...you remove both for testing and reconnect both, or they blow up. You can remove both and see if those lights stay lit.
You see the SU/SD board pair connected to the SC board? Same thing with those pairs...you remove both for testing and reconnect both, or they blow up. You can remove both and see if those lights stay lit. They are located just to the left of the SC board. Just unplug the boards from the SC, you can leave the ribbons connected that come from the plasma panel, but disconnect that SC board entirely. Do this test with the board you have installed, not your boards that are being shipped. See if the present boards stay on or not.
Whoops, you have the SC50 jumper on the SC board. See picture
yes,i use a jumper. DISCONNECT THE SU/SD BOARDS COMPLETELY 1st
It doesn't tell us anything more than we already knew.
There should be a VS and Va adjustment on the TV's power supply board. Va usually doesn't cause that splotch, but VS may need bumped up -- up to 10 Volts higher than the voltage printed on the TV PANEL. I'll have to also check the Vsc voltage usually found on the SC board for Panasonics. I usually find that on LG and Samsung plasmas, and adjust that too. But I'm not 100% sure it exists on Panasonic. But those 2 voltages usually get rid of the "paint spill" issue. Tweak the Vs first, then set it back to the ideal voltage and try the Vsc if you find it on the SC board. Minimize the spill with each adjustment, favoring the Vsc on the SC board.
No, the SD and SU will not fix this issue. it's got to be the Vsc voltage. Usually increasing the VS voltage reduces it, but in your case it seems to increase it. Set your VS voltage back to what the panel lists on that Tag. Can you take a picture of the panel at that voltage and then use the paper clip button above your response box to ADD that picture? If that paper clip button doesn't show up, go to IMGUR - you can post your picture, then copy the hypertext and paste it to your response.
TXNSC1MNUX is the Panasonic part number, the board number for that is TNPA5351AM. Vscn and Vad are both created on the SC board from the Vs supply and use a SMPS regulator circuit creating a fixed voltage, thus non-adjustable.
See picture --