Megadrive 2 Jamma Audio Amp issues

PCB problems and fixes
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Owlz1981
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Megadrive 2 Jamma Audio Amp issues

Post by Owlz1981 » January 10th, 2019, 5:50 pm

Hi guys,

this is my first thread, so i hope, i am not violating any rules. Used the Search function in advance, but did not find this issue posted yet, so here it goes:

i have been working on a megadrive 2 jamma solution - bare bones, including a Mono Audio amp to route through to my astro.

Controls, RGB, Sync, everything works flawlessly so far.

Now, as soon as i connect the audio amp, i get vertical line artifacts. audio works as it should, while doing so. as soon as i disconnect the ground for the audio amp, the picture is perfect again.
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