MVS Fault - Random Horizontal Bars

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    • MVS Fault - Random Horizontal Bars

      I have an MVS cart giving me random blue lines through the screen. They look like text boxes and appear in places they shouldn't, with no text.

      I have desoldered all C ROMs and S1 and the blue bars are still appearing. So it is not the fix layer and is being generated by P1 or by the motherboard itself.

      Has anyone come across a similar issue?

      Same thing happens on 3 motherboards (1F, 1FZ and a 2, so it is not a motherboard fault)

      CRC checks out ok in UniBIOS

      ROM has also been confirmed working in MAME

      The post was edited 1 time, last by xodaraP ().