Ideally I’ll find a TV and a VCR. I can use the TV to test the commodore and the VCR to test the other TV.
Plus the VCR will have RCA outputs, so I can use it to capture RF signals with my capture card.
Of course, that will only help me narrow things down. It is still possible that my power supply for the c64 is bad (it’s a new aftermarket part from c64 forever) or that there’s something wrong with the cable setup I’m trying to use.
But I won’t know anything without more inputs.
@ajroach42 From looking at units with that name and usage on eBay, that looks like it's an NTSC monitor, which is what the "high end" monitor for the C64 was. I'd suggest sticking with that and making or buying a cable to plug into the Commodore's A/V port, since that'll give you composite out as well as the separate chroma & luma outputs used by the C64 monitor (which might even be supported by the Sony?)
@ajroach42 Aah! I'd forgotten that VCRs have built-in tuners! I remember engaging in all kinds of hacks like that back when I was in middle school.
I see a bunch of stories of people disabling their RF modulators, even to get composite out, but I wouldn't think that would be necessary. Seems like it might be a video quality hack.
The TV works fine, but only accepts composite inputs.
The commodore can do composite out, but not with the cables I have.
The commodore can also do RF out, but I have nothing that can take an RF signal, much less convert it to composite.
I’ll hit local thrift stores for a VCR this weekend.
(And I’ve already ordered the right video output cable.)