[CSDb] - User Forums - PAL problems - Hanover Bars? (look here, graham!)

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Forums > CSDb Discussions > PAL problems - Hanover Bars? (look here, graham!)

2004-03-14 04:32

anix
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Registered: Feb 2004
Posts: 35

PAL problems - Hanover Bars? (look here, graham!)

what do hanover bars look like?

i have a pal c64c, very late model with 8xxx series vic. in the usa i have no other pal unit to compare with, but i think there is something wrong with mine. some colors have vertical alternating 'lines' in them, and others have vertical 'zigzag' lines... my NTSC c64s look crystal clear, but i have no other pal machines, or pal monitor gear to compare with - so i havn't been sure if it is the monitor (bt848 / dscaler) or the c64.

another thought was that it had something to do with the slightly out-of-spec of the c64 pal and the bt8x8 series... but i just read some pages on these 'hanover bars' and thought that since some colors produce different patterns, that it might be from that - but no pages give a very good description of what they would look like...

and would a bad/broken VIC produce them ?

2004-03-14 13:10

Graham
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Registered: Dec 2002
Posts: 990

those vertical lines/zigzag patterns are the color carrier. my guess is: you connected your c64 to a chroma/luma input, and your cable uses composite as luma, so your monitor displays the color carrier as luma too.

2004-03-14 15:07

anix
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Registered: Feb 2004
Posts: 35

well....i'm going to check that out because it sounds like it could be the problem - except that i made the cable myself, and i'm quite sure that the composite and luma are from different pins, and my composite output works - it also has strange lines in its output, but not as bad as the YC output.

now, there's only one ground in that DIN, i made the assumption that it's ok to ground all of the video and audio connectors to it.

i'm going to open it up again and check for possible problems i might have missed.

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