thegamezmaster Posted March 22, 2012 Share Posted March 22, 2012 I have one that after the title screen when you get to the skill select screen and press any skill level, the screen shows a character at the top left of TV for a few seconds then goes back to title screen. I've cleaned and cleaned with no luck. Any ideas or suggestions? Thanks! Quote Link to comment Share on other sites More sharing options...
NIAD Posted March 22, 2012 Share Posted March 22, 2012 Seeing as you have said that you cleaned and recleaned the cartridge edge connector and If all your other games are working properly, then the cart is dead and you will have to replace it. Otherwise, if you have the skills, you can open up the cart and reflow all the solder joints. Worst case scenario, donate the cart to CollectorVision to be recycled for one of their future releases and you should be able to find a replacement Mr. Do! cart anywhere from $1.00 to $10.00 depending on your luck. 1 Quote Link to comment Share on other sites More sharing options...
ColecoDan Posted March 22, 2012 Share Posted March 22, 2012 At least it happened on a common easy to find cart. That is what you can be thankful for. Quote Link to comment Share on other sites More sharing options...
thegamezmaster Posted March 23, 2012 Author Share Posted March 23, 2012 Thanks for the replies. Just one more question, does reflow the solder mean just resolder all the solder points? Quote Link to comment Share on other sites More sharing options...
65Gamerguy Posted March 24, 2012 Share Posted March 24, 2012 Thanks for the replies. Just one more question, does reflow the solder mean just resolder all the solder points? In a way yes. Basically you have to reheat the solder joint then add a bit more solder to it to make certain that everything has a good contact. Sometimes in electronic curcuits something happens called a "cold solder" joint in which the solder didn't quite get as good as a connection that was needed but it will still work and it can work for a while then develop problems. If you look closely at the solder joints with a strong magnifying glass sometimes you can see the problem. I hope this helps. Quote Link to comment Share on other sites More sharing options...
thegamezmaster Posted March 24, 2012 Author Share Posted March 24, 2012 Thanks for the replies. Just one more question, does reflow the solder mean just resolder all the solder points? In a way yes. Basically you have to reheat the solder joint then add a bit more solder to it to make certain that everything has a good contact. Sometimes in electronic curcuits something happens called a "cold solder" joint in which the solder didn't quite get as good as a connection that was needed but it will still work and it can work for a while then develop problems. If you look closely at the solder joints with a strong magnifying glass sometimes you can see the problem. I hope this helps. Thanks for the clarification. Just wanted to make sure of what I was doing. Not up on all the newer terms. Thanks! Quote Link to comment Share on other sites More sharing options...
harlock76 Posted March 25, 2012 Share Posted March 25, 2012 you can ask programmer which use donnor carts if they have a mr do board somewhere it happened to me with zaxxon (chip dead) and i found a replacement board so i rebuilt my cart Quote Link to comment Share on other sites More sharing options...
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