Someone installed a reset button on my Tron.

Dave27

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Ok whenever I plug my Tron in it comes up a white screen. I have to reach in the door and press this giant button someone installed and it resets and loads the game. I think this is retarded :) Does anyone know what someone would have to do to reverse this setup or why they did it. How do I change it back so when I turn on Tron the game comes right up. I know alittle about MCR power supplies could it have been because the +5 I think it is for the reset was low. If i change it back and a voltage is off will it hurt the pcb or just not load the game. Like i said I have had zero problems with this game but just want it to be right....Thanks in advance....Dave
 
Ok whenever I plug my Tron in it comes up a white screen. I have to reach in the door and press this giant button someone installed and it resets and loads the game. I think this is retarded :) Does anyone know what someone would have to do to reverse this setup or why they did it. How do I change it back so when I turn on Tron the game comes right up. I know alittle about MCR power supplies could it have been because the +5 I think it is for the reset was low. If i change it back and a voltage is off will it hurt the pcb or just not load the game. Like i said I have had zero problems with this game but just want it to be right....Thanks in advance....Dave
Just a guess, but perhaps the reset circuit on the linear power supply board stopped working (as they do) and someone wired up a button to it. See if the button is connected to the purple wire that goes from the linear PS to the PCB stack. I've been wanting to do a writeup on the reset circuit for a while, but I haven't got around to it. Basically, if you spend some time with a schematic and this manual (pdf page 16), it becomes clearer.
 
There are plenty of 3 pin reset chips on the market that can be used to replace that reset circuit. If there are too many reset pins for that chip to drive then you can buffer its output with a simple 7407 or use a transistor.

Hmmm... maybe I have a use for those extra surface mount 3 pin reset chips I have sitting here after all...
 
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