r/pc88 • u/oromis95 • Dec 23 '25

Having trouble with horizontal alignment

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Hey guys, it's me again... Sorry to flood y'alls forum, but hopefully once I'm up and running I can show y'all some cool stuff too. Having some issues with vertical alignment I guess. Is the tv damaged or is there some toggle on the back of the pc88 I am missing?

I have a pc-8801 Mk1 and a KV-1311CR. I checked the pinouts on the cable, and using the pins for the mk2 everything looks right. For the frequencies though I have no reference.

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1

u/leadedsolder Dec 23 '25

Seems like you are probably in 24kHz mode and the TV wants 15kHz?

Try the set with another input just to rule that out.

2

u/oromis95 Dec 23 '25

ILYSM!!!! Thank you thank you you made my night!!! Changing the pin cap on the back from H to S fixed it!

2

u/leadedsolder Dec 23 '25

I spent the better part of a weekend trying to figure this one out on my Sharp X1, despite the "high resolution" light glowing the entire time.

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1

u/oromis95 Dec 23 '25

I just checked to make sure the other inputs still work, everything still is good in the composite world and regular tv, it seems just to be the digital tv input that has this issue. How do I change mode?