I repaired this model before with capacitor replacement but this one has a different power supply. I found one bulged 1000uF cap which I replaced.
TV powers on, flashing front green led goes steady green with no backlight.
On state skipping GND pins, all DCV
12V 12.25
3.4V 3.48
6V 6.05
19V 18.4
3.4_ON 1.52
6V 6.05
DIM 3.20
ST5V 5.09
I-B 1.72
ERR 0.03
I-C 0.07
ST5V 5.09
ON/OFF 1.98
ADC 4.98
Main filter cap 395V
Inverter board fuse - good, 24VDC on both sides
Inverter transformers pins 1-2 380-400 ohm, 1-3 780-800 ohms
Was going to replace all the caps but decided to test after replacing just a few including the bulged one.
Edit: found service manual on Elektrokanya. I-C is inverter control and I-B is inverter brightness. Added relevant schematic page.
TV powers on, flashing front green led goes steady green with no backlight.
On state skipping GND pins, all DCV
12V 12.25
3.4V 3.48
6V 6.05
19V 18.4
3.4_ON 1.52
6V 6.05
DIM 3.20
ST5V 5.09
I-B 1.72
ERR 0.03
I-C 0.07
ST5V 5.09
ON/OFF 1.98
ADC 4.98
Main filter cap 395V
Inverter board fuse - good, 24VDC on both sides
Inverter transformers pins 1-2 380-400 ohm, 1-3 780-800 ohms
Was going to replace all the caps but decided to test after replacing just a few including the bulged one.
Edit: found service manual on Elektrokanya. I-C is inverter control and I-B is inverter brightness. Added relevant schematic page.
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