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Next time you are throwing away something electronic, disassemble it can take out the circuit board. You can practice removing and reattaching parts.

Not trying to be mean. But that is an awful lot of issues. I suggest getting more practice with soldering before trying again. The power LED on the minigun might be connected backwards. That is a common problem people have.

When you say "the microchip" I assume you mean the THS7374 video amplifier. If that is left unpopulated, you obviously won't get any video output from the minigun. Though maybe you can see some LEDs light up and hear some audio out from your jamma board.

What @nem said. You need a bigger load on the power supply. Either a jamma board or some honking resistors.

I have a Wellon VP598. I think the USB interface is not 100% standards compliant. I use Linux as my main PC operating system. The official Wellon software is for MS window. I thought I would use the software through a windows virtual machine. I spent hours trying to get it to work. But the...

Which version of minigun do you have? There are multiple AV ports.

If your problem is with your upscaler, yes. If your problem is with your supergun or JAMMA board, no.

We don't have enough info to troubleshoot your distorted image problem. I can say, it is caused because the upscaler doesn't like the csync signal from the supergun. But is that because of a bad upscaler? Or an issue with your supergun? Or even a bad JAMMA board? Impossible to tell from the...

5.16V is no problem.

The Sync Boost PCB is will not help your TV accept an RGBS signal unless it specifically requires TTL level csync, which is very very rare.

I'm guessing you are asking if the Sync Boost PCB converts RGBS to RGBHV. No, It doesn't.

Are you trolling? You are connecting your minigun to the AV out of your HDTV? And you are asking if you can "go through coax"? Eh, what?

Please clarify exactly what display are you using. By "flat screen" do you mean a "flat panel" (ie. LCD)? Many will not recognise interlaced RGBS that JAMMA arcade game produce. Post some pictures of your completed minigun PCB.

No idea what "mstreet6" is. But arcade games don't put out NTSC or PAL. They put out RGB video.

Yes. Surface mount components should be mounted flush to the board. But the circuit will work as long as there is an electrical connection.

No. The confusion above was between bits and bytes (the units). Not between powers of ten and powers of two (the prefix).

Have a good trip. I hope you are able to visit Tokyo Akihabara while you are there.

Small yet significant correction: 32GB 32Gb = thirty-two gigabits (4GB) 32GB= thirty-two gigabytes (256Gb) Sorry people confusing bits and bytes is a pet peeve of mine.

Proman programmer + darksoft adapter is still good?

Pretty sure it only works with the proman programmer and nothing else.