How to default tv sway to av out on power up?

squall280

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i did a tv swap in a space invaders. all hooked up problem is that the tv defaults to chennel 3 on power up. is there a way to have it default to video out so i don;t need to change the channel everytime i power up the spcae invaders machine.
 
Apparently it doesn't retain the setting it was on when powered off. You'll need to find one that does. Shouldn't be hard....19" tv's with a composite input are a dime a dozen at the thrift stores these days. How's about a nice Sony Trinitron?
 
I'd look at datasheets for the main chips on the board and try to find the one responsible for switching between TV & AV. It should be possible to make it permanently in AV mode with a simple mod.
 
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