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Author Topic: neo tec zig zag pattern - SOVED  (Read 1630 times)

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codecrank

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neo tec zig zag pattern - SOVED
« on: May 03, 2012, 12:10:50 pm »
I just picked up a hyper neogeo 64 cab. The monitor is in decent shape but there is a white line that zig zags across the screen in raster... Before i go and recap this guy, does anyone know what could cause that ?

it looks like this:

« Last Edit: May 07, 2012, 04:26:57 pm by codecrank »

grantspain

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Re: neo tec zig zag pattern
« Reply #1 on: May 03, 2012, 01:55:06 pm »
possibly flyback lines from the screen volts being too high

codecrank

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Re: neo tec zig zag pattern
« Reply #2 on: May 03, 2012, 08:03:28 pm »
possibly flyback lines from the screen volts being too high


you mean the vertical retrace line ?
« Last Edit: May 03, 2012, 08:12:31 pm by codecrank »

codecrank

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Re: neo tec zig zag pattern - SOLVED
« Reply #3 on: May 04, 2012, 01:55:31 pm »
It was indeed the vertical retrace line, someone turned up the main brightness on the flyback so high that it was overcoming the blanking circuit.  :lol