A question about restoring a Coleco Telstar 6040

[Scrambled Eggs]

I found an old Coleco Telstar Model 6040 at a junk shop and am in the process of cleaning it up. Here is a picture for clarification since they made so many models:
http://img29.imageshack.us/img29/9260/pict0224g.jpg

Now my question: I've cleaned the case and board all up inside and out, but the graphics on screen are smudged.
Pictures:
http://img704.imageshack.us/img704/6417/pict0226m.jpg
http://img43.imageshack.us/img43/5/pict0225m.jpg

I know that's not the way it is supposed to look. Is there anything I can do to fix this? I've already tried several tvs and replacing the cable which connects it. It is connected directly to the coaxial input since I don't have the RF switch for it, and I am using a 9 volt AC adaptor from the Salvation Army which isn't the actual adaptor, but is the correct voltage and amperage.

This thing is so cool! Please help me restore it!

[Compute]

Some caps will dry up/short over time. Although I'm not familiar with the hardware, caps are always a good starting point. Does that one run on batteries? Maybe try running it on batteries or try a different ac adapter.

[Scrambled Eggs]

Some caps will dry up/short over time. Although I'm not familiar with the hardware, caps are always a good starting point. Does that one run on batteries? Maybe try running it on batteries or try a different ac adapter.

It can run on batteries, so I'll try that first. I'll test the capacitors if that doesn't work. Thanks for the info!