Page: 5 MCR Power Adapter Instructions - Rev. 1.3
, Arcadeshop, LLC
After your game is up and running we recommend you leave it powered on for at least
eight hours so the on-board battery will fully charge.
That’s it, time to play…
Notes:
With the power supply being the #1 problem with Midway MCR games, the second most
widespread problem... MCR Ribbon cables! Over time they begin to fall apart and cause
problems.
We offer a set of replacement ribbon cables for your board set. See our site: arcadeshop.com we
highly recommend replacing the ribbon cables when you upgrade the power supply.
Troubleshooting:
•
There is a +12 Analog LED on board, if that light is out, you will probably not have any
sound. Check the 3-
prong connector and make sure it’s in correctly. Using your meter,
check to see if you have AC voltage between the Center and two outer pins. If you do not,
there is a problem with the harness, fuse holders, connectors or your transformer assembly
in the bottom of the game.
Troubleshooting: (continued)
•
If your game resets, does not come up, seems ‘flaky’, you
could have a bad board set or
the connectors that you are plugging into the MCR adapter are bad. If your old power
supply battery had leaked, you may have acid damage to the internal metal connectors of
the plugs. Inspect the connectors and if you see any ‘green’ your connectors are bad. You
can try cleaning them with contact cleaner, but in the end, you may have to replace some
or all the pins in the connector.
•
Check the output of your switcher, insure at least +5.1 VDC.
•
If you hear a hum in the audio there are a couple probable causes:
1.
There are several different versions of boards sets and wiring harnesses, this
combination may cause a hum in the audio. Installing jumper W3 on the cheap
squeak board (Left side of cab, NOT on the CPU set) may remove it.
2.
The switching power supply you are using may not provide enough current to drive
the two sound boards. We recommend you use a power supply with 3 amps or
greater on the +12 rails.
Final Notes:
This kit carries with it no guaranty of compatibility to your game. Although this kit has been tested
with numerous MCR games and CPU boards, there’s a possibility that some of them are different.
This kit carries no liability protection for you game PCB, while there is no reason this kit should
cause damage to your game, it is possible that incorrect or poor wiring can damage your game
board set. Liability is limited to repair/replacement of the adapter only.
