I would suggest to unplug the TV from the AC power outlet first, wait a couple of minutes to plug it back in. If that does not work, the main board is defective since is not providing proper video info to the main digital controller board (D board). The Main board part number is: TNPH0721AJS or TNPH0721ADS. If you need to verify the main board part number, you will need to remove the back cover of your plasma to check it out.
Let me know if you require further assistance.
Blue should converge on top of "yellow".Bad connection(s)
on blue convergence IC.Replace both IC's for durable repair.
Check pico fuses.Reset convergence alignment.
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What type of hook up are your using for signal to the set? eg-Cable connection, A/V, or Component input ???
The TV has been changing colours, goes to a orangey yellow picture, is there a way to adjust it. It is 6 years old
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