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A 10 blink error code on your Panasonic TC-P46S2 plasma TV can be caused by a fault detected in one more more of the following areas: Sub 5v SOS / Main 3v SOS DG BoardDTV 9v SOS / Tuner Power SOS
You will need to check you definitely have the correct voltage outputs from the power supply board first, then troubleshoot other areas of the TV circuitry.
Yes, you can get the service manual and block diagram from
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However this type of troubleshooting is always best solved through carrying out the voltage checks to narrow down the affected area.