Re: Sony Bravia KDL-37M4000 doesn't turn on
Ok, I replaced the inverter. It's still not working, but now I'm getting slightly different symptoms.
The Timer/PIC LED doesn't flash red at 6X intervals anymore. The TV turns on and stays on with a green power LED. When powered off, there's no standby LED (never was). There is still no backlight, no video and no audio.
I checked the standby power circuit at CN602 on the power board. With the power off, there's 3.36V at pin 3 (Standby), 3.36V at pin 2 (AC_OFF_DET) and 0V at pin 1 (POWER_ON). With power on there's 3.10V at pin 1 (POWER_ON).
It looks like the standby circuit is good... Where to next or do I need to replace the main board (BM4)?
Ok, I replaced the inverter. It's still not working, but now I'm getting slightly different symptoms.
The Timer/PIC LED doesn't flash red at 6X intervals anymore. The TV turns on and stays on with a green power LED. When powered off, there's no standby LED (never was). There is still no backlight, no video and no audio.
I checked the standby power circuit at CN602 on the power board. With the power off, there's 3.36V at pin 3 (Standby), 3.36V at pin 2 (AC_OFF_DET) and 0V at pin 1 (POWER_ON). With power on there's 3.10V at pin 1 (POWER_ON).
It looks like the standby circuit is good... Where to next or do I need to replace the main board (BM4)?
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