Hitachi 50UX26B no picture no sound

[jekitt]

My Hitachi 50UX26B has no picture and no sound. When the power is turned on, the red protection led (D975) comes on along with the 5 green power leds (D950, D951, D952, D953 and D954). Almost immediately (1 sec or less) leds D953 and D954 go out. Then leds D950, D951, D952 dim and go out and the red led (D975) flickers a few times and then reamains steady. Fuses F902 (5A) and F906 (1.6A) are both good and have never been replaced. I have closely inspected component and trace sides of the power circuit board and haven't found any obvious problems (burnt components or traces). I have replaced IK04, IK05, IK06 and I601, but did not help. I've read several similar posts for my problem, but the chassis is not the same as mine (I have an AP63 chassis) and don't have some of the suggested components to check. Mainly the E994 pico fuse. I cannot find any E??? either on my board or in the parts lists.

Any help is greatly appreciated.

Thanks in advance!!!!

[sssuperbloke3578]

your assignment, young fella, should you choose to accept, is to cold check components in your power supply using a multimeter - check diodes, resistors, electrolytic capacitors, transistors.