Troubleshooting 7 Blinks Failure (1 O 2); Troubleshooting 7 Blinks Failure (2 O 2) - Panasonic G20 Series Troubleshooting Handbook

Troubleshooting 7 Blinks Failure (1 of 2)
Cautions: Disconnect the AC Power prior to making any disconnection or
Wait at least 2 minutes before the removal of any connector.
If the power LED continues to blink even after the TV is unplugged, press and hold the power switch on the TV for a few
seconds until the LED turns off.
When taking voltage reading, place the voltmeter probe at the test point, component, or connector's pin indicated before
connecting the TV to the AC line. This will ensure voltage reading accuracy before the TV shuts down. (Since the TV is
shutting down, expect the voltage to only come up a couple of seconds.)
Remove the front cabinet and expose the panel to a bright light for a thorough visual inspection. Check for cracks and
blown pixels or any other abnormalities.
Check for burnt spots on the SM board.
Blink List of boards likely to cause this symptom. (Based on actual reports and circuit operation).
Code
Most Common
7 SC
This part can possibly cause this error code, but there has
not been any report of this part causing this symptom.
Warning: The Vsus line has large capacitors that hold the charge for some time even after the TV has been turned off and
unplugged. When disconnecting P2/SC2 or P11/SS1, bleed the remaining charge of the Vsus before reconnecting the cable.
Use a 500 ohms/ 5W (At least) resistor to discharge the Vsus line before reconnecting P2/SC2 or P11/SS11.
nd rd
2 3
SU SM
connection.
th th
4 5
SD Panel
This part can possibly cause this error code and
it has been confirmed to cause this symptom.
th th
6 7
A
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