Panasonic TC-26LX20

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Check the SOS Shutdown and over-voltage
protection circuits. Please reference power
supply section of this document. Use the
troubleshooting flowcharts for the Primary
and Secondary power supply checks.
LED Flashes Once every 5
LED Flashes Five Times
LED Flashes Eight Times
Unit shuts down and the Power on LED is off.
SOS Shutdown Problem
seconds
Check the Backlight supply vol ge from the P board. ta
 TC22LR30 -15 volts P2 pin 9-15 Ground pins 1-7.
 TC26/32LX20- 120 volts P4 pins 1-2. Ground Pins 4-7
Check the Main 9Volts Regulator
Q801 on the AP Board
Check the Sub 5 Volts regulator, IC808.
If the unit keeps shutting dow
Shutdown line at pin 9 of connector DG2.
It should be at a high level. Anodes of D877, D878,
D880, D844 all should be high.
n, check the SOS