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ColecoVision thick vertical lines issue

4 replies to this topic

#1 Dr.Buddha OFFLINE  


    Combat Commando

  • 2 posts

Posted Fri Mar 2, 2018 4:33 PM

Hi guys. I'm having an issue with a ColecoVision I just got. I've looked through the forum for a similar issue, but it doesn't look like the super thin vertical line issue that comes from a bad on switch, and I've tried 2 different power supplies with no change so thats also unlikely. Ideas?


#2 Dr.Buddha OFFLINE  


    Combat Commando

  • Topic Starter
  • 2 posts

Posted Mon Mar 5, 2018 3:40 PM

no one?...

#3 Vectorman OFFLINE  


    Chopper Commander

  • 242 posts

Posted Tue Mar 6, 2018 10:18 AM


#4 digress ONLINE  



  • 940 posts
  • Location:Toronto, Ontario, Canada

Posted Tue Mar 6, 2018 10:46 AM

1. Try a different power supply if you have one.

2. try leaving it warm up for a while see if that helps. It help with my system

3. It could be your video ram going bad so you could buy a kit and replace the vram or get an f18a upgrade board

4; it could be your power switch - you could disassmble and clean it up or as some of us have doen replace it witha rocker switch. This was a good solution for me.


System is work other wise? check to see if your joysticks are working in games as well.


no one?...

#5 4300 ONLINE  


    Space Invader

  • 18 posts

Posted Mon Mar 12, 2018 9:05 AM

Give cleaning the switch a shot. That's exactly what mine looked like prior to cleaning.

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