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-Atari 800XL flickering Screen


Drummerboy

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Hello,


I just received an Atari 8Bit Lot, including a Atari 800XL.


Testing the machine, all seems are working fine, but when i load some games, like International Karate (take a look to the video), the game background is flickering. With games like Pole Position, Moon Patrol or Berzerk, the main character not appears on the screen or blinking on the screen.


The Memory Self Test pass ok, but down on the screen where say : "Reset or Help to Exit", this letter are flickering.


I tested with other PSU, and the same problem.


I am using a Composite Video cable on CRT TV.


So, someone know what are happening?.


If you know, please let me know.


Comments, suggests are welcome.



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Well, exchanged the GTIA with other Atari 600XL i have and work, but in strange way, i put the 800XL GTIA, and work fine in the 600XL.


Anyway, the thing is now is working in order.


Thanks Bob1200xl.
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