Re: HP F1523 - 2 secs display then darkness

Thought I would resurrect this discussion as am investigating the exact same problem.

So far I have removed and tested the 3 transistors, and the two 8 pin ICs previously discussed. They tested OK, and none of the caps look at all bad.

One other thing I noticed was that when I test the inverter board (ie with the case open) with the lcd panel connected to the bulb outputs I can hear a brief and quiet fiz sound, followed by the backlights going out and the led going yellow. But when I did the same test without...