Tandberg CTV1

[larschr]

I bought this rare Tandberg color TV in late march from a collector that was downsizing the collection. It had worked until his basement was filled with water and this and other TVs were (litterally) drowned. The CTV1 is from 1970, and i assume most of them are long gone now. I have never heard about anyone who owns or owned one, neither did the guy i bought it from. Not so strange really; who would spend a shitload of money to buy a color TV when no one knew when we would get color broadcasts? When that happened in '72-73, solid state model were already available. I assume most of the CTV1s sold in norway were bought by schools for educational use (to teach electronics students how to repair a color TV). The CTV1 is mostly transistorized, but the RGB amp and line output stage is tube-based. The HV rectifier is solid state. The 110degrees CRT makes the cabinet very big ad difficult to handle without any help. When i got it, it didn't work, it looked like rubbish and it smelled awful. I disassembled it completely and cleaned it up, sanded down the outside and gave it 3 coats of teak oil. I cleaned the chassis with a steam cleaner and left it on a big (and hot) transformer at work for a few weeks to dry completely off.
I reassembled it this week, fixed some bad solder joints in the power supply, plugged it in and turned it on. The sound came immediately, and shortly after the "whistling" of the line output came too. But when the high voltage came on, the HV rectifier started arcing. I replaced it with one from an old Philips. When i turned the set back on, i got two horizontal lines on the screen. I sprayed all the (rusty) pots and all the plugs inside with contact cleaner and turned it on for the 3rd time. And guess what! The picture came up. The green beam is the only one working and there is a v. hold problem (picture is "rolling"), but the picture looks sharp. At this point it looks like there is two bad caps on the CRT board causing the problem with the red and blue - i bypassed the capacitors one at a time with a piece of wire, and the missing colors appeared to work. I haven't taken any good pictures of it yet, but i uploaded a movie on youtube: http://www.youtube.com/watch?v=XE1e4PZU6no