Trying to figure out how to test a Qwak PCB...

modessitt

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After looking at the wiring diagram, it appears it comes in as AC, and then is converted to DC on the board? Is there anyway I can make a JAMMA adapter with DC voltages that will run the board, or connect DC after the conversion points?

Also, is the video output for a TV-type monitor like Computer Space was, or is it for a regular B&W monitor like Space Invaders used?

Obviously I have no gun to test it with, but I'd like to be able to see if the board works...
 
Also, is the video output for a TV-type monitor like Computer Space was, or is it for a regular B&W monitor like Space Invaders used?

Both of these are one and the same :D

Computer Space used a black and white tube type television modified to accept composite video (I think they just coupled the video into the grid of the video amplifier tube)

Space Invaders used a purpose-built black and white monitor, but it is also just composite video.

-Ian
 
This the duck shooting qwak or the ducks floating through the maze qwak?

Not trying to be a smart ass, but I'd say the former..

Well, I guess I don't know for sure. I wasn't aware there was more than one. Can you tell from this board pic?

SDC11260.jpg
 
BTW - obviously I have to replace a missing cap there on the right...
 
shooting... ducks in the maze is a 6502 game

Okay. Any insight on a way to test this - besides finding someone with one? I can rig up a connector, but not sure what types of voltages I'd need, nor whether I can hook it up to my SI monitor easily enough.

I just want to see video and hear sound. Figure someone might be interested in owning it besides me, and I'd like to see if it works or not before I sell it...
 
Well... if you have the pinout and it wants AC, find a transformer (or variac) and give it what it wants. Or, you can probably just jumper whatever voltage(s) it needs right to test points (or cap legs, or whatever else you can get jumper wires attached to).

Really though... I doubt it's worth the trouble. I doubt there's much demand for it, and if you're just looking to test it to sell, I'd just sell "untested". If someone really needs the board, I'm sure they'd buy it working or not, and I'm guessing the price of a board is quite low, working or not.

DogP
 
...

Really though... I doubt it's worth the trouble. I doubt there's much demand for it, and if you're just looking to test it to sell, I'd just sell "untested". If someone really needs the board, I'm sure they'd buy it working or not, and I'm guessing the price of a board is quite low, working or not.

DogP


Um... It's a HOBBY. Nothing in this arcade hobby gives a commercially viable return.

Saltbreez
 
Um... It's a HOBBY. Nothing in this arcade hobby gives a commercially viable return.

Saltbreez

Right... trust me, I know a lot about spending too much time on something that I'll never get back monetarily... but from:

Figure someone might be interested in owning it besides me, and I'd like to see if it works or not before I sell it...

it doesn't sound like he's trying to find out if it works to keep for his hobby... it sounds like he's trying to test it so he can sell it as "working" if it does work. I'm just saying that "working", "untested", or "non-working" are all probably worth about the same (not much). I've got lots of boards from that era, and I don't plan on testing them before selling them, though really, from my track record of selling stuff... I doubt I'll ever sell them :p .

DogP
 
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