Panasonic TH-37PV7P - Troubleshooting No Power Indication

9.3. No Power
First check point
There are following 2 states of No Power indication by power LED.
1. No lit
2. Red is lit then turns red blinking a few seconds later. (See 9.2.)
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TH-37PV7F / TH-37PV7P / TH-37PX7B / TH-37PX7E / TH-42PV7F / TH-42PV7P / TH-42PX7B / TH-42PX7E