I have a 2yr old toshiba 36 inch. It works fine for 5min then the volume starts to go up without pushing any buttons to max volume, then it wont cut off, it has to be unplugged. Is it worth taking to a repair shop?
I don't have any ideas about how to fix the volume problem, but just wanted to issue a warning: If it is a CRT/rear-projection style TV (not LCD or plasma), be very careful if you decide to open it up and poke around. At least with that style of computer monitors they contain pretty large capacitors that can hold a very strong charge even if they have been unplugged for a long time. In fact, I would say don't open it up yourself unless you have some serious electrical engineering experience.
A smart man knows what he knows; a wise man knows what he doesn't know
As a solution, could you hook your tv up to a stereo, or some other device that can control the volume?
This may sound silly, but since the TV remote is usually in the same room nearby, try removing the batteries completely out of any all remotes that are there - TV, cable, DVD, VCR, etc. Wait 10 minutes and try the TV manually - no remote. Believe it or not, it may be any one of the remote controls operating incorrectly, especially these programmable universal remotes.