SOS Detect
(Shutdown)
When an abnormality occurs in the unit, the “SOS Detect” circuit is triggered and the TV shuts down.
The power
LED on the front panel will flash a pattern indicating the circuit that has failed.
Cautions:
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.
Some steps require removal of connectors and sometimes PC boards removal. Do not allow the TV to
run for more than 30 seconds while connectors or boards are disconnected.
NOTE:
When taking voltage reading, place your meter’s probe on the test point or pin indicated before
connecting the TV to the AC line. The voltage you intent to measure may only appear for a brief
moment.
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.
Slide 58
Slide 3
Summary of Contents for G20 Series
Page 11: ...Detailed Troubleshooting Procedure for Shorted Vsus Slide 11...
Page 13: ...Detailed Troubleshooting Procedure for Shorted P15 Slide 13...
Page 15: ...Detailed Troubleshooting Procedure for Shorted Vda Slide 15...
Page 17: ...Troubleshooting 1 Blink Failure Slide 17...
Page 19: ...Troubleshooting 2 Blinks Failure Slide 19...
Page 22: ...Troubleshooting 3 Blinks Failure Slide 22...
Page 25: ...Troubleshooting 4 Blinks Failure Slide 25...
Page 28: ...Troubleshooting 5 Blinks Failure Slide 28...
Page 32: ...Troubleshooting 6 Blinks Failure Slide 32...
Page 35: ...Troubleshooting 7 Blinks Failure Slide 35...
Page 38: ...SU SD boards Together Isolation Procedure Slide 38...
Page 42: ...Vfo VSCN F 5V_F Resistance Measurements SU SD boards Slide 42...
Page 45: ...Troubleshooting 8 Blinks Failure Slide 45...
Page 48: ...Troubleshooting 9 Blinks Failure Slide 48...
Page 50: ...Troubleshooting 10 Blinks Failure At Plug in Slide 50...
Page 52: ...Troubleshooting 10 Blinks Failure At Power on Slide 52...
Page 54: ...Troubleshooting 12 Blinks Failure Slide 54...
Page 57: ...Troubleshooting No Power Dead Unit Slide 57...
Page 60: ...TV s Behavior After Connectors Removal Slide 60...
Page 62: ...End Slide 62...