While you wait for answers, we may have found some information which could help you.
Click here for Help Turned Blackpentax optio m20 wont turn on?
pentax 50 blank screen?
my picutres on my e50 camera has lines going across it ?
Pentax E60 displays a blank screen?
Pentax optio M20?
Can I get the broken screen on my Pentax T20 optio camera replaced?