Philips 42" TV 42PFL3603D/F7 clicks but won't turn on.

[arman960]

I need little help please. I am working on this TV. When I plug in the power supply it makes a click noise but there is no standby LED light in the front. I checked the voltage output from power board, it's showing only 2.66V and I also get 3V3 ST=3.3V

Now can anybody tell me if the standby voltage is ok or it has to be 5V?

Is my mainboard might be faulty? when hooked up with mainboard I hear click on powerboard and see one led light for one second on mainboard , but than nothing happens.Pushing the power-on button on the panel or remote does nothing. Only the response when I plug it in the wall outlet.

only voltages I get from the powerboard when not hooked up with mainboard are 3.3V and standby 2.66V

[paulstef]

Re: Philips 42" TV 42PFL3603D/F7 clicks but won't turn on.

http://elektrotanya.com/philips_chas.../download.html

[arman960]

Re: Philips 42" TV 42PFL3603D/F7 clicks but won't turn on.

could not find any information the powerboard output in standby mode in the service manual.

[budm]

Re: Philips 42" TV 42PFL3603D/F7 clicks but won't turn on.

The STANDBY pin is the PS_ON signal from the main board, so you need to see if it toggles between <1V and >2V or not when you toggle the power switch on and off.
Report the reading when TV is OFF and when TV is on so we can tell if it uses active high or active low logic.
3V3 is the standby power supply (instead of typical 5V).
So on those two connectors, report the DC voltage on all those pin when TV is OFF and when TV is ON.
Format the readings like this for example:
CN6:
3V3ST = xxV (OFF), xxV (ON)
STANDBY = xxV (OFF), xxV (ON)
12Vssb = xxV (OFF), xxV (ON)

Report both connectors.