IF MY PENTAX OPTIO A30 is turned on a blank screen

You need a new lens assembly. I can replace the lens assembly for $65. If you just want to get rid of this camera, I also buy all Pentax Option a10, a20, a30, a40 cameras. Contact me at: mrfixitmark at comcast dot net

The lens problem is NOT related to the screen. A broken screen will not affect the lens, and you can still take pictures even with a broken LCD screen. The lens problem is either a bad lens assembly or a bad main board. It is almost always a bad lens assembly. I can replace the lens assembly AND LCD screen for a total of $85, or Pentax will do it for about $180. In my opinion, it is not worth fixing. If you want to sell this camera, contact me at: mrfixitmark at comcast dot net
I can use this camera for parts.

It sounds like you may have a bad lens assembly, or a bad main board. If it is sticking, it will buzz. If it fails to open or close all the way, it will turn itself back off. This is what it sounds like you are saying. I can fix this for $40, or you can send it to Pentax in Arizona. I don't know what they charge for a lens assembly, but the minimum charge for this camera seems to be about $90. If you just want to get rid of this camera, I also buy all Pentax Option a10, a20, a30, a40 cameras.
Contact me at: mrfixitmark at comcast dot net

see if the lens is zooming in & out. If not check for broken pcb or lens assy.

It sounds like you may have a bad lens assembly. If it is sticking open or closed, it will usually make a buzzing noise. If it fails to open or close all the way, it will turn itself back off. This is what it sounds like you are saying. I can fix this for $40, or you can send it to Pentax in Arizona. I don't know what they charge for a lens assembly, but the minimum charge for this camera seems to be about $90. If you just want to get rid of this camera, I also buy all Pentax Option a10, a20, a30, a40 cameras.
Contact me at: mrfixitmark at comcast dot net

You need a new LCD display.
I can replace the screen for $40, or you can buy the parts on eBay for about $25 and do it yourself if you are very handy, and very skilled with small delicate parts. You could send it to Pentax in Arizona, but they charge about $90 for an LCD replacement. If you just want to get rid of this camera, I also buy all Pentax Option a10, a20, a30, a40 cameras.
Contact me at: mrfixitmark at comcast dot net

It sounds like you may have a bad lens assembly, but you did not mention if it seems to be fully extending or not. If it is sticking, it will usually buzz. If it fails to open all the way, it will turn itself back off. This sounds like what may be happening. I can fix this for $40, or you can send it to Pentax in Arizona. I don't know what they charge for a lens assembly, but the minimum charge for this camera seems to be about $90. If you just want to get rid of this camera, I also buy all Pentax Option a10, a20, a30, a40 cameras.
Contact me at: mrfixitmark at comcast dot net

Dude 1st of all did you charge your batterires. if yes and still not working try changing your battery pack and try to turn it on again. hope im not too late.

I also have the same problem with the A30. Anyone know how to fix?

if you dont have a codex on your computer (if you're using windows media player) you wont be able to play your videos because this is a requirement for most of the newer pentax.
read your manual for more details