Philips 42PFL3605 no power and power LED

[sandem]

Philips 42PFL4606H/12 no power, no LED

The power board has no power, no 12V, 24V or 5V.
The fuse is ok and there is 230V on the input tested with my DMM.

So it's I think it's a problem with the 5V S/B?

Already replaced a all the electrolytic capacitors and the IC905.

Schematics are in the attachment!

I read that a lot have problem with PFL series , 32 or 42 inch tv

[dskall]

Re: Philips 42PFL3605 no power and power LED

What voltage do you have on across main filter cap

[sandem]

Re: Philips 42PFL3605 no power and power LED

Is this capacitor C941 (450V, 120uF)? Voltage across this capacitor is 319V

[dskall]

Re: Philips 42PFL3605 no power and power LED

Your board numbers seem to be different than the schematic

[budm]

Re: Philips 42PFL3605 no power and power LED

Can we see good clear pictures of the whole backside of the TV showing all the boards and good clear straight shot pictures of the top and the bottom side of this power supply board?

[sandem]

Re: Philips 42PFL3605 no power and power LED

Found the difference, my tv is number 42pfl4606h/12. See the attachement for the pictures. Stil no standby power working

[thoma]

Re: Philips 42PFL3605 no power and power LED

http://forum.iwenzo.de/philips-32pfl...b--t64559.html

replace TOP264 and Zener 9.1V

[sandem]

Re: Philips 42PFL3605 no power and power LED

Already replaced the TOP264, the new zener 9.1V is ordered. Hope this solves the problem, this week a new update!

[thoma]

Re: Philips 42PFL3605 no power and power LED

It is important to change the zener diode otherwise the TOP 264 will
be damaged!
Look if your TOP gets very hot in a short time if this is the case the
TOP is finished!!!