Philips PUS6501 - no picture

[dskall]

Re: Philips PUS6501 - no picture

Since things seem to be intermittent. I would heat sections of power board and note any difference. Also check solder joints with a magnifying glass.

[nomoresonys]

Re: Philips PUS6501 - no picture

Since things seem to be intermittent. I would heat sections of power board and note any difference. Also check solder joints with a magnifying glass.

+1, heat up the caps with a hairdryer, see if it turns on.

[nomoresonys]

Re: Philips PUS6501 - no picture

Kind of suspect a capacitor, if it isn't a backlight connection or led.

[betmen]

Re: Philips PUS6501 - no picture

I removed 4 electrolitic capacitors C8120-C8123, all four are good.
I measured two smd capacitors in circuit and they are not in short circuit and R8148 is OK.
Earlier I seen that optocoupler U9306 in stanby circuit have 0V on pins 3-4 on transistor, I wonder is that relevant?

Also there is no intermittent LED light any more, LEDS are not working at all, but when I test it with backlight tester on connector they are working.

Any new ideas?