I'm having a problem with my Colecovision the past couple of days. It's been working great for a couple years now. It was working fine just a couple days ago, but suddenly now it only displays mostly static on the screen when I turn it on. There is no visual of any game/startup screen.
The attached pic shows the pattern of static I see. Sorry, it's sideways.
The top quarter of the tv is plain black, but then there's like a reddish line and the rest is static (although the bottom quarter seems yellowish).
I've tried using different RF Adapters and cables and it's the same problem (maybe the colours a little less noticeable, but same issue). For now, I'm just using a direct cable connection to the tv.
I've already taken apart the power switch to clean the contacts on its top and bottom halves. No change.
Another piece of info. I recently checked out the voltage readings reaching the main board from the power supply.
When the power is off:
Blue: -4.6 V
White: 4.75 V
Red: 9.7 V --Wait, isn't that a bit far off?
Then I turn the power on and here are the readings:
Blue: -4.6 V (same as before)
White: 4.75 V (same as before)
Red: 6.4 V -- Is this supposed to happen when the power is turned on??
I'm worried that the problem could be the RF Modulator. But those power supply readings seem strange, but I don't know why the system would work fine for years and then suddenly this would be the problem.
Anyway, based on this info, and the picture attached, does anyone have any suggestions/ideas of the problem and how to fix?
Edited by WebRat, Thu Jan 23, 2014 9:11 PM.