I have a Philips 42pfl3606h/12 LCD TV.
In standby mode it has the usual red led. When I try and turn on the tv the red led goes out and no green led to say tv is on. No display at all. No backlight and when I shine a light up against the sceen there is no picture at all. When switched on it is accepting input from the remote control as each press lights up the correct led on the tv. twice when I have had it "on" and pressing the menu button doing a test it made a strange noise like a flash and there was a blue glow from the back, but it rarely happens.
I opened up and took out the power/inverter board (I think this model has power and inverter all on one board). I checked it for any bulged or blown caps,burn marks, bad traces etc nothing visually bad, that I can see. I'll check the mainboard tomorrow. Im trying to narrow the issue down to one of the 2 boards, really not sure where the problem lies.
I found the service manual (Chassis - TPM6.1E LA).
Heres a pic of the 2x boards from the manual
The red led and accepting remote control input shows it is getting some power, but possibly not enough to start the backllight and image processor hence no green led when it is "on". However it could be the mainboard not producing an image so the backlights done switch on? Also the blue flash I saw, not sure what caused it. I havent figured out how to test the sound on it also, as I cant see the screen to change to a hdmi channel, also not sure if it will accept audio input without a picture (i dont use audio through hdmi, only devices I use are pc and laptop with a tv), the tv has inputs for audio, il have to try that tomorrow along with some remote control trial and error to find the hdmi channels.
Any help greatly appriciated.
In standby mode it has the usual red led. When I try and turn on the tv the red led goes out and no green led to say tv is on. No display at all. No backlight and when I shine a light up against the sceen there is no picture at all. When switched on it is accepting input from the remote control as each press lights up the correct led on the tv. twice when I have had it "on" and pressing the menu button doing a test it made a strange noise like a flash and there was a blue glow from the back, but it rarely happens.
I opened up and took out the power/inverter board (I think this model has power and inverter all on one board). I checked it for any bulged or blown caps,burn marks, bad traces etc nothing visually bad, that I can see. I'll check the mainboard tomorrow. Im trying to narrow the issue down to one of the 2 boards, really not sure where the problem lies.
I found the service manual (Chassis - TPM6.1E LA).
Heres a pic of the 2x boards from the manual
The red led and accepting remote control input shows it is getting some power, but possibly not enough to start the backllight and image processor hence no green led when it is "on". However it could be the mainboard not producing an image so the backlights done switch on? Also the blue flash I saw, not sure what caused it. I havent figured out how to test the sound on it also, as I cant see the screen to change to a hdmi channel, also not sure if it will accept audio input without a picture (i dont use audio through hdmi, only devices I use are pc and laptop with a tv), the tv has inputs for audio, il have to try that tomorrow along with some remote control trial and error to find the hdmi channels.
Any help greatly appriciated.
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