Panasonic
TH-42PZ80U
Enter Service Mode InstructionsWith TV on, press and hold the volume down button on the front of the TV, and press info three times on the remote.
Select Category Instructions1 and 2
Change Data Instructionsvolume up and down
Exit Service Mode Instructionspower down
Menu Categorywb adj
Menu Itemsrgb cut rgb drive all cut all drive -->do not use these unless you need to match ywo displays side by side.
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These 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://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
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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.
First of all change the input to some other which you are sure works well. Then if the problem persists, this might need attention by a qualified service technician.
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.
I had this same exact issue. Panasonic sent a repair tech to my house since I was still under warranty. The tech was able to fix me up in about 10 minutes. He replaced the "brain" or A-board and now I'm back in business. This is NOT a power supply issue. The brain is the circuit board that has all the inputs attached to it (component, hdmi, etc...).
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.
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