The lines only appear when using the RGB->VGA adapter, though.
I had an Amiga 500 previously and was able to use one of those cheapy SCART to Component converters and it did well with the Dell monitor, although I had to use a work-around for the green signal cable. The resulting image was free of vertical lines! I expect this will be true also with the A1200 using the SCART input on the OSSC.
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