I have a panasonic TH-42PZ80U plasma tv. The indicator like is blinking 10 times. I have tried powering the unit down and and resetting it by holding the power button in for 10 seconds. I have heard several different things about people being able to get their tvs to work after doing so. Is there something that I am doing wrong? I have also read that the 10 lights signifies a bad video board. Is there any way of isolating which board has gone bad? Also, where could someone get a copy of the service manual for this TV? Thanks

This is an error code indicating failure of some board and might need attention by a qualified service technician. Switch off TV manually, switch off power, remove plug and retry after 48 hours.

I think if you Google research the model with "10 blinks" you will likely find it is bad power supply or related to it.

hi,
In your tv there some problem with power supply. you have to check the followin voltages. Sub 5v SOS ,Main 3.3v SOS A-Board,DTV 9v SOS , Tuner Power SOS. If any one of the voltage fails it will shows 10 blinks.
ok

i have a 50 inch panasonic plasma model number tc-p50s1 that blinks 10 times, does anyone know what this code means?

I have the same thing. Just started blinking 10 times. Pretty much had to unplug the unit over night. Could never turn it off and then turn it on again.
This worked for about a week. This morning, tried to turn it on after being unplugged. Still blinks.
Called Panasonic. they attempted a couple solutions, nothing. Suggested authorized repair shop.

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Panasonic said "A" board,
A board SOS Detect (Explanation)
10 Blinks SOS: The voltage regulators IC5400 and IC5401 in the A board generate SUB9V and SUB5V. The 9V and 5V from these ICs are monitored by IC1100. Any abnormality on the SUB9V or SUB5V lines, triggers the shutdown circuit and the MPU shuts down the unit. The power LED blinks 10 times.

But need to measure the connection SC2, if it short, it will be the SC board.

The knowledge obtain from: Real case of repair by myself.
Information from Panasonic training manual.

How many times is that light blinking? For example a 7 blink error code would blink 7 times pause 7 times etc. What is your's blinking?

check power supply board and replaced main board
Manufacturer Panasonic Part Number TNPH0716S

If your TV model is TH-42PZ80U, and you want to replace the whole power supply unit, shopjimmy.com has them for $160. But for each parts# on that board itself, you need to find a Service Manual to look up that part.