My Colecovision is just showing colored fuzz

[nester]

I bought a Colecovision recently, and when I hook it up to my tv it is nothing but colored fuzz. It seems like an RF problem, but I have tried it with multiple working RF adaptors and still nothing. I think it is powering on because the tv is changing color when I turn on the power. I have tried both an older Atari style RF and a newer one without a tv/game switch. Any idea what the problem is? Does it sound like the system or the hookups?

[Ikrananka]

With issues such as this the first port of call is always to check the power supply. Are you able to measure voltages from the power supply? Do you have an alternative power supply that you can try?

[Orrko]

ColecoVison systems are known to have "finnicky"-"faulty" power slide switches,I had one and when i flicked the power slide switch fast and/or pushed down on it it made a difference,also you might try cleaning cartridge and internal cartridge slot pins with 91% alcohol this is where to start before investing a lot of money,It sounds like it is reading the game but not projecting clearly,also you might try changing the channel for a possible difference,concerning the power supply you have; plug it in turn on system with game and do the wire test as such:wiggle the wire in one inch areas to see if there is a power change,literally swing the power cable back and forth while it is turned on;with system off clean the plug and the male plug connector on the system,these systems are old and sometimes need some conditioning to bring them back to speed.

hope this info may help you

[Vectorman]

Congrats! You got one of the rare 'colored fuzz' editions of the CV. Hard to find, like a white Bally Astrocade.