Television and Home Theater

hi all,
wondering if any of you know a bit about this model. it all of the sudden seems to lose it's cable connection and if i jiggle the cable a bit, sometimes it brings back the connection. i am going to take it to a repair shop but am worried about getting screwed over. does anyone know what might be wrong and if so....how much should i expect to pay to repair this problem ?

thanks in advance!!!!

I have a Sony trinitron tv (model KV-32xbr70) that is having problems
first it started having some blue lines at the top of the screen.
Occasionally after it had been running for a while the screen would go black (still had audio) but would be okay if you turned it off and then back on.
today when I turn it on the picture shrank to about half the size of the screen.
Is this the picture tube going out or something else that can be repaired?

I own a 2 1/2 year old 63" JVC TV. We recently had a power surge and now my TV is projecting a picture that looks 3-D WITHOUT the glasses, or double image with a red hue. Is this something that I can possibly fix on my own or am I going to need someone to come and look at it?