I've had this cab for a couple of years now, I won it on an Ebay auction and had it shipped up from Melbourne to Brisbane (Australia).
http://www.arcade-museum.com/C/Challenge.html
Video of the game play.
https://www.youtube.com/watch?v=KQ-Mz5B-uCs
It was working when I got it but it's been stored away since then, waiting for a cosmetic restoration. A friend of mine also has one with a faulty PCB which he dropped off for me to have a look at for him.
I dusted the cobwebs off and powered it up to check both boards.
My board has issues with the paddles, the right side has them doubled up and the ball is missing when you try to start a game.
My friend's board was totally dead.
The crystal was working but the 7404 directly below it was faulty, I replaced it but there are further issues.
A quick check of the voltage (+5v only on these boards) and it was sitting at 6.38 vDC. One of the four 5k pots had corrosion on the connector and they were all a bit scratchy.
Rather than working on top of the cab, I decided to get it onto the test bench.
I have a 3.5" reversing camera monitor with AV (composite) input and runs off 12v the board only required 5v so I used a PC power supply to run both.
Four new 5k pots and a couple of switches completed the setup but I didn't have any of the connectors that plug onto the board so I soldered all the connections for the controls to the underside of the board. Power and video were connected via modified crimp connectors so I could still swap between boards.
I've started to write up a pinout, theres no schematics in the manual that came with it which I've scanned and uploaded to KLOV.
http://www.arcade-museum.com/manuals-videogames/M/Micro Games Inc Challenge Service Manual.pdf
http://www.arcade-museum.com/C/Challenge.html
Video of the game play.
https://www.youtube.com/watch?v=KQ-Mz5B-uCs
It was working when I got it but it's been stored away since then, waiting for a cosmetic restoration. A friend of mine also has one with a faulty PCB which he dropped off for me to have a look at for him.
I dusted the cobwebs off and powered it up to check both boards.
My board has issues with the paddles, the right side has them doubled up and the ball is missing when you try to start a game.
My friend's board was totally dead.
The crystal was working but the 7404 directly below it was faulty, I replaced it but there are further issues.
A quick check of the voltage (+5v only on these boards) and it was sitting at 6.38 vDC. One of the four 5k pots had corrosion on the connector and they were all a bit scratchy.
Rather than working on top of the cab, I decided to get it onto the test bench.
I have a 3.5" reversing camera monitor with AV (composite) input and runs off 12v the board only required 5v so I used a PC power supply to run both.
Four new 5k pots and a couple of switches completed the setup but I didn't have any of the connectors that plug onto the board so I soldered all the connections for the controls to the underside of the board. Power and video were connected via modified crimp connectors so I could still swap between boards.
I've started to write up a pinout, theres no schematics in the manual that came with it which I've scanned and uploaded to KLOV.
http://www.arcade-museum.com/manuals-videogames/M/Micro Games Inc Challenge Service Manual.pdf
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