Asteroids Deluxe Magnifying

70sGamer

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My Asteroid Deluxe plays fine for about 5 minutes and then the screen starts enlarging until it's to big to play. It's just starts zooming in over the next few minutes until all you got is the center of the play field. Anybody know what is happening here?

Thanks
 
This is called "blooming". Start with a monitor rebuild - both deflection and HV cage, and don't forget the deflection transistors...
 
What's it called when you fire up the machine and the image is too big (the copyright is off screen and half the scores are off screen) then over time, as the monitor warms up, the image shrinks to it's proper place (scores can be seen in full and the copyright message is on screen)?
 
What's it called when you fire up the machine and the image is too big (the copyright is off screen and half the scores are off screen) then over time, as the monitor warms up, the image shrinks to it's proper place (scores can be seen in full and the copyright message is on screen)?

Exorcism? :D

Check for cold solder, and check the pots on the game board. Sometimes the glue screws up the pots. Might be fixing itself after heating up...
 
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