"jhughe90" wrote in message
om...
Looking for any hints on what to look for if I open it up.

This was a problem that got progressively worse. First it would only
do it when warming up, and finally it started happening all the time.
It blinks on/off about every second. The power light stays on, but it
goes from full picture to complete black, it's not dimming out.

It's an Acer FP855.

Thanks...

Sounds like the backlight fluorescent tube is worn out.