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I have a Philips 42pfl7422 that turns on, shows the start screen for 2-3 seconds then goes blank. Power light stays on. I have a second 42pfl7422 that has a broken lcd, This unit powers on and stays on, no picture, back light only. Switching the power board and the main board results in the same problem. The TV with the good LCD has a different back light system, so I can not switch the inverter boards. I have not looked to see if the entire back light and inverters can be switched. Is the problem the inverters or the LCD sub board? Thanks

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  • david37g Jul 19, 2008

    Thanks, I have checked the inverters and found a blown fuse on the slave and two mosfets that are shorted out. Do you know where I can find mosfets and a KOAC 8 amp ceramic fuse.

    Thanks again, David

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It is problem with the inverters only

replace the inverter ....

Posted on Jul 18, 2008

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