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Display issues after DIY power fix


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I was given a PAL 7800 recently. The unit came as-is, untested with neither the power supply or controller, but 2 games including DKJr (One of my favorites), so I was pretty chuffed.

I searched online for some info on a quick fix, and ended up hardwiring a SEGA MegaDrive 2 PSU.

The console powers on and plays games!

However, after a minute or two of play, the screen will crackle and the picture will disappear, only to glith back to normal seconds later. It repeats this process every few minutes.

This issue has reoccurred every time I've tested the system.


Any pointers folks?

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