I have the Panasonic TH-50PZ800UA I had the 10 blink code and was able to fix it
Pay attention to the blink code: 7 indicate it may be your SU, SD, SC board or maybe all three. This depends on your model though. Download the service manual for your model. I have done extensive T-shooting with my panny and I originally got the 10 blink code which could be one or more of the Following boards: A, D, P, PB, SC, and sub power supply, SU or SS? Awesome that narrows it down:-(
1- A tech came out and replaced the SC adn PB boards but didn’t resolve the issue still have 10 blinks. After 3 months of waiting for parts from Panny and Poor Tech Service, I was able to settle with my warranty co. I am now t-shooting myself:
Here is what I have done so far:
Replaced P-Board- changed from 10 to 2 blink code which indicates D board. NO fans or Led on circuit boards lit. This Board had a different revision letter; Mine ended in H this one was L. I took a chance and thought it might be interchangeable but they are not! My specific power supply is hard to find online Panny and every other vendor was out of stock!
Replaced A board- no change 2 blinks
Replaced D-Board- No change 2 blinks the board was ordered from eBay, had a different revision ending in AJ mine was BJ. These parts are not interchangeable.
Replaced SUB power supply (mine has 2 power supplies) - No change 2 blinks
* Replaced P-Board again- ordered correct board.....Now showing 7 blinks and the fans are turning on but no pic. Also I have noticed that the SS and SC board green LEDS are lit now. Yeah I'm getting somewhere. C'mon babe!!!!!
Replaced SC board- no change 7 blinks reverted back to old board
Reverted back to my original A-Board no change 7 blinks.
Note*** I have been Following the service manual flowchart and checking voltage and resistance in the proper locations however this method is for t-shooting 1 board does not take into account that multiple boards could be defective. In some cases if your SU or power supply goes they take out other boards.
I have disconnected the SU, SD, the 7 blinks turned solid, then disconnected the SC board same solid light. This indicates that I need to replace either the SU, SD or SS boards> Now I'm getting somewhere.
I will replace thee all 3 boards one at a time to see where the fault is: I have ordered the parts (used). I am waiting for them to arrive. Ultimately it could be the panel, they have IC chips that are not replaceable and the entire screen may need to be replaced. So far I have spent $400.00 on all the boards. If it turns out to be the panel then I will stop there; not cost effective. I will end up selling it off in parts.
I was able to fix the Issue:
Still waiting for parts SU, SD, SS but I decided to take a chance Revert back to original D board- Voila!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The set is working. The board I had ordered had a different revision or was just defective not sure and at this point and don't care.
For those of you that are having the issues with the blink codes first check to see if your fans are spinning in the back, also you should see some green leds lite up on the circuit boards SS, SC boards depending on model (you must have the rear panel removed for this). If you don't see fans spinning or leds then most likely it's your Power supply (P-board). Unfortunately as i stated earlier the 10 blink code could mean many different boards. After I replaced the P board I got 2 then 7 blinks, which told me another board was bad.
In the end it turned out to be the P-Board, and a incorrect or defective D board made it go to 7 blinks.
When I went through the Service Manual it said that it could be SU, SD, SC boards????
I can see why it can take tech 3 or 4 visits to fix theses Plasmas. The service manual is only one tool and should not be completely relied on. I have spent $400 in used parts i could probably return most of them and it would only have cost me $150 for the p-board, but i think I will hold on to the parts for future issues.
FYI, It’s not hard to replace the boards just make sure you unplug the TV and let it sit for 15 or 30 min for the capacitors to drain. If you know how to use a multimeter then you’re all set. Also download the service Manual and Tech Guide they give you valuable info on adjusting or checking Voltage after the new boards are installed.
Tip... when ordering parts get the part number off the part do not go by the TV model. In my case I have the TH-50PZ800U however it is actually TH-50PZ800UA which for some reason uses different circuit boards A, D, SU, P are not interchangeable.
Hope this helps everyone
Good Luck to all