Hello everybody,
I have a Philips LCD TV model 47PFL8404 H / 12, chassis Q548.1ELA.
My TV has the following problem: TV starts, in a fraction of a second gets a picture and a backlight. The image and the backlight go out immediately. After a few seconds the TV gets the picture again and loses it. So a few times at the start. After a few unsuccessful launches, the image and the backlight no longer come. My TV has a normal sound. Problem is in the power supply - inverter defective. ( „Delta“ DPS-298CP-A )
PSU checked, I've replaced all four of the high voltage capacitors at the output of the inverter transformers with new ones. I have also replaced IC702 = DDA003A and IC3 = DDA005, without success. I also checked the neon lights in the backlight in the panel. Everything is right. The TV still behaves the same way!
For suggestions, I would be grateful!