MrGame Transformers and Input Voltages

In the bottom of the cabinet is the main transformer. On the right side of the transformer box there is a screw-in fuse holder for the line fuse. There is another fuse holder, on the left side, with a fuse for the general illumination circuits.

Hanging on the wood separating the coin box area from the rest of the cabinet interior is a Hantarex switch mode power supply, used to supply +5V to the video game board in the backbox and to run the cabinet fan for ventilation.

Hantarex schematics

The Aux Output connector has +12V/Gnd on it, and is used to run the cabinet ventilation fan in some games.

The Input Connector has 220VAC and Ground connections from the main transformer.

The Monitor Power / Degauss connector is intended to drive a video game monitor, and has +135V on pins 1/2 and Degauss on pins 3/4.

The Output Voltage connector has +5V/-5V/+12V/-12V and Ground on it:
9
-5V
6
Gnd
3
-12V
8
+12V
5
Gnd
2
+5V
7
Gnd
4
Gnd
1
+5V
Only the +5V and Ground are used, the -5V/+12V/-12V are not used.

The pot in the centre of the case can be used to adjust the output +5V level.

Step Up Transformer

In order to run a MrGame game intended for the European market (220V transformer) in the US, a "step-up" transformer like this one:
Simran SM-1500DE
is required. I have not tried it, but it looks like this same transformer would work for running a game intended for the US market (110V) in a country where 220V is the norm.