It does does nothing, no power light.
It was getting all of the 80, 13 voltages, but Zero on the standby pin. I warmed the board with a hair dryer for 30 seconds. Now the 80 volts is 45. The 13 volts is 8. Still no life on standby pin.
Disconnecting LED board makes no difference in the voltage readings.
It makes a faint high voltage hissy pulse sound coming from the larger transformers.
Bridge rectifier shows 160 volts output.
360 volts on the 3 long capacitors.
The small yellow LP2 gets 130 degrees F.
The bridge rectifier heat sink gets 125 degrees F.
Everything else is room temperature.
Resistor RF1 reads open, replaced it, no change.
All diodes and fuses check good.
Not sure where or what to check next.
It was getting all of the 80, 13 voltages, but Zero on the standby pin. I warmed the board with a hair dryer for 30 seconds. Now the 80 volts is 45. The 13 volts is 8. Still no life on standby pin.
Disconnecting LED board makes no difference in the voltage readings.
It makes a faint high voltage hissy pulse sound coming from the larger transformers.
Bridge rectifier shows 160 volts output.
360 volts on the 3 long capacitors.
The small yellow LP2 gets 130 degrees F.
The bridge rectifier heat sink gets 125 degrees F.
Everything else is room temperature.
Resistor RF1 reads open, replaced it, no change.
All diodes and fuses check good.
Not sure where or what to check next.
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