Can I use electronics cleaner (in a spray can) to try & clean a stuck lense? I think there is sand or dirt in it, it won't go in or out.

Absolutely no! Apart fron the dust/grit problem, the electronics cleaner is probably not very clean itself, and may contain all sorts of ingredients in the formulation! If you really must use a spray wash, then IPA (Isoproply Alcohol) is best. The sort you get from printer shops for cleaning print heads is usually very pure as otherwise it could clog the fine jets in the head! Otherwise your best option is to disassemblr the camera, but watch out for high voltages stored on flash capacitors. They still bite after the batteries are removed!

Under no circumstances should you try this, as you know that sand is present. the liquid will drain the sand deep inside the lense assymbly and would create mode friction to the movement.

HP put out an update which can be downloaded from their site, to correct this problem. They state it's a software problem in the camera itself.
You might try powering the camera off, then restart it to see if that might help. With camera off press and hold the on switch until the logo appears, then immediately release it. Reopen the camera and follow the inquiry's which will come up on the screen.
Watch the lower left hand of the screen and see if an error message pops up momentarily, The format would be "Error 108."
You can also e-mail HP tech support and they will try to help you at no cost.
If you read their forum pages, it looks like everyone who bought this camera has a stuck lens.
As a P.S. I never have gotten mine to work again and I'm told it will have to be sent back to HP for a total re-programing. No idea what it would cost.
Good luck if you find a solution let me know, I'd appreciate being able to fix mine.
Lonnie Johnson

I know this is an old post but it may help someone. Blow lots of compressed air in there to clean the mechanism. Also with the lens barrel extended, tap it with a pencil (a grain of sand is usually the culprit, this may help to dislodge it). If that doesn't work, it may be necessary to go in there. Do this only as a last resort. The following repair will likely expire your warranty, so be forewarned. This blog post outlines repair procedures for stuck lens covers. An A400 is used as an example:

http://camerarepair.blogspot.com/2007/11/repair-of-stuck-lens-covers.html
Good luck, and remember to do this only as a very last resort. Oh, and if you do decide to try the repair, please post how it went.

No. believe me I found out the hard way...

NO I repeat NO liquid should be used anywhere near the lens assembly. It will cause further problems and streaking on the lenses. Sometimes clean and dry compressed air will do the job but to make sure it's all out a complete dismantle and clean is needed. BMW