My Pentax A30 will not stay switched on

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

It sounds like you need a new main board. Pentax in Arizona will replace the main board for about $135, or I will replace it 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

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

This might sound a bit silly, but as I have posted earlier I had a similar problem As soon as he lens came out ready to take pictures it retracted and turned off. Because i haave decided to buy another camera I held the Optio in my right hand and banged it into the palm of my left hand. No great shock to the camera, but hey presto it now works. Not sure if I can rely on it though......what does anyone else think about this?

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?

change the batteries. mine does this when the batteries are almost dead.