I have also the c:31:23 code on my sony pd120e, im bagging the grap out of my cam , but it does NOT!!! work!!!

Thanks guys.I had the same problem in my sony cam C:31:23 and I hit firmly arrond the cam it start working.. Thanks,

Wow - this worked for my ccd-trv16. Couldnt believe it. Thanks

We smaked it and it started working how black.... LOL

Oh my god, ths is true, I had the same error and was thinking what a stupid idea, but it worked!!!!! Thanks.

this is so awesome, i had stopped using my camera because of this error a while ago, and then it somehow worked again. after using it for a while the error was back and i thought i might as well throw it out by now, then i read this and it worked immediately! thanks guys!! =D

Same problem with me. Same solution too! Just hit it!

It worked... is incredible, i was reluctant, i slaped the camera and it is working Thanks

hahahaha... its work!!!! thanks a lot....

Folks I had the same problem with a Sony CCD-TRV138 same code error C:31:23 and i've changed the Tape, i've reset the camera and nothing worked out. I SLAPED THE CAMERA TOP, BOTTOM AND BOTH SIDES WITH MY HAND (DO NOT USE TOO MUCH FORCE) AND IT STARTED TO WORK RIGHT AWAY!!! Thanks for this brilliant ideea.