Red LED blinks 8 times before turning steady blue, but I see the "No Signal" image without backlighting.
At CN9101, I get these readings on steady red LED (standby):
NC gives 0 volts
+12V gives 12.59V
+12V gives 12.59V
+12VAU gives 12.47V
GND gives 0V
GND gives 0V
NC gives 0.057V
DIM ON/OFF gives 0V
At CN9101, I get these readings on steady blue LED (ON):
NC gives 0V
+12V gives 12.58V
+12V gives 12.58V
+12VAU gives 12.33V
GND gives 0V
GND gives 0V
NC gives 3.35V
DIM ON/OFF gives 2.964V
At CN8101, I get these readings during steady blue LED (ON):
VLED+ gives 12.38V
VLED+ gives 12.38V
N/A gives 0V
N/A gives 0V
LED1 gives 0V
LED1 gives 0V
Three filter caps spec'ed for 56uF and 450V give these readings:
C9103, C9102, and C9101 give 0V when power is disconnected
C9103, C9102, and C9101 give 166V when LED is steady red (standby)
C9103, C9102, and C9101 give 166V when LED is steady blue (ON)
Thinking LED1 and main cap readings are off, but not sure what to examine and/or replace next. Gratuitous picture T-Con board included.
At CN9101, I get these readings on steady red LED (standby):
NC gives 0 volts
+12V gives 12.59V
+12V gives 12.59V
+12VAU gives 12.47V
GND gives 0V
GND gives 0V
NC gives 0.057V
DIM ON/OFF gives 0V
At CN9101, I get these readings on steady blue LED (ON):
NC gives 0V
+12V gives 12.58V
+12V gives 12.58V
+12VAU gives 12.33V
GND gives 0V
GND gives 0V
NC gives 3.35V
DIM ON/OFF gives 2.964V
At CN8101, I get these readings during steady blue LED (ON):
VLED+ gives 12.38V
VLED+ gives 12.38V
N/A gives 0V
N/A gives 0V
LED1 gives 0V
LED1 gives 0V
Three filter caps spec'ed for 56uF and 450V give these readings:
C9103, C9102, and C9101 give 0V when power is disconnected
C9103, C9102, and C9101 give 166V when LED is steady red (standby)
C9103, C9102, and C9101 give 166V when LED is steady blue (ON)
Thinking LED1 and main cap readings are off, but not sure what to examine and/or replace next. Gratuitous picture T-Con board included.
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