Hi all,
I've bought a supergun (with power supply) from eBay and a Tiger Heli PCB with a Toaplan to JAMMA adapter. I'm getting audio (coin inserts and stage 1 sounds) but no/distorted video. I've tried:
1. swapping the SCART cable with an s-video to s-video cable - same symptoms except no audio with just the s-video cable, which is expected.
2. flipping the adapter at the PCB, and at the supergun. Those produced a "no signal" output from the Retrotink 5X. With the normal orientation of the adapter, the 5X reads out: Source is SCART-RGB, input lines are 267p, input h-freq is 15.26 khz, input v-freq is 57.16 hz, samples per line is 1716, adc clock is 26.19 mhz, and buffer lag is 2.0 ms. I don't know what most of this means but generative AI insists that these are the figures I want (and they are better than no signal). I haven't tried flipping it at both the PCB and supergun but generative AI says I'm going to fry the PCB if I keep doing this.
I think the issue is likely the adapter, since it appears to be homemade and was shipped from overseas, so I ordered another from https://pcbjunkie.net/index.php/jamma-a ... a-adapter/. But, if that's not the issue, I'm not entirely sure how to proceed. I could order another PCB and test that, but at this point between the Retrotink, Tiger Heli, and the supergun I'm $700 deep and still no videogame. Is there any way I could use a multimeter to determine whether the adapter or the PCB is the issue?