Rock-Ola Techna Retrofit Display Kit

This new display board is a direct replacement for the Rock-Ola 53170 board found in the 480 Techna, 476 Grand Saloon II, 484, and 488 Jukeboxes manufactured by Rock-Ola. The original vacuum fluorescent displays fail and replacements are not easily obtainable. The new board uses LED displays and is a direct replacement for the vacuum-type display board. Additionally, the new display board can still be used with the original display driver IC (MM57163N) located in the Profit Setter Module.

In most cases, the MM57163N display chip is also faulty and for this reason, it is included in the Kit. (The MM57163N replacement is also available separately)

More information can be found here

Jukebox Remote Controls

These new remote controls are basic, direct functional replacements of their original counterparts.
Designed primarily for the Jukebox operator, their four basic functions make them easy to use and featuring a tough ABS plastic enclosure, they can stand up to harsh commercial environments.

Multiple Infra-Red transmitters maximise the range of the remote control.

They are available in NSM and Wurlitzer versions. The NSM version is compatible with all ES4, ES5 and ES5.1 series of Jukeboxes and the Wurlitzer version is compatible with the I84 series of Jukeboxes.


Follow the links to find more information on the Wurlitzer and NSM remote controls.

Rock-Ola Record and Credit Retrofit Display Kit for Max Jukeboxes

Rock-Ola MAX Retrofit Display Kit Contents

These new display boards are direct replacements for Rock-Ola boards 52030-A and 52035-A found in the MAX series of Jukeboxes that were manufactured by Rock-Ola from 1979. The original Rock-Ola Vacuum Fluorescent Displays fail over time and replacements are not easily obtainable. The new display boards feature LED display technology and are direct drop-in replacements for the old-style displays. Additionally, the new displays can be used with the original display driver IC (MM57163N) located in the Profit Setter Module.

Note that in a lot of cases the MM57163N chip itself is also faulty and for this reason, it is included in the Kit.

(The MM57163N is also available separately)

Old display boards (top) compared to the LED display board replacements (bottom)

More information can be found here

MM57163N Replacement Module

MM57163N Replacement module shown in a Max2 (481) Credit Unit

The MM57163N module is a reverse engineered drop-in replacement for the original MM57163N.

This is the display driver chip that was first shipped with the Rock-Ola MAX 477 series of Jukeboxes in 1979.

The MM57163N drives the jukeboxes vacuum fluorescent displays with data sent from the credit unit CPU. This display data is latched and shown on the jukeboxes displays and is only updated when a new display command is received from the CPU.

Max 2 Display working with the replacement MM57163N Module

Each segment and grid is driven by its own transistor which can be seen on the underside of the board. This approach was taken to keep the module as close to the original chip size as possible in order to make installation as easy as possible.

Bottom and Top of the bare MM57163N module

The MM57163N module is encased in a custom enclosure that protects it from the surrounding environment.

MM57163N fitted in its enclosure

MM57163N module installed in a 477 Credit Unit (without top rider)

Side view showing Max 477 Credit unit space restrictions

Max 477 Credit Unit with rider boards installed

More information can be found here


The easiest way to use a PC in an arcade cabinet!

I designed PC-JAMMA to easily convert any arcade cabinet to run an emulator and still have the flexibility to swap game boards so I could still use my library of JAMMA games.

This single board converter uses all existing cabinet components and is JAMMA compatible. It converts the PC’s video signal to 15kHz RGB suitable for any standard arcade machine monitor. It connects cabinet controls as USB joysticks and as a USB keyboard. It amplifies and outputs the PC Audio to the JAMMA edge connector or stereo out plug.

How to use

Before we begin, I assume your cabinet is fully working!

Locate your old game board.

Unplug from the JAMMA harness and remove it from your cabinet.

Connect your PC’s video, audio, and USB cables to PC-JAMMA.

Plug PC-JAMMA into your cabinets JAMMA Harness.

Put PC-JAMMA back where the old game board was located.

Turn on your cabinet and computer.

On the first run, Windows will need to download and install some drivers.

Once complete, Run your choice of emulator and start playing.

To run a standard JAMMA board instead of emulation is now as easy as swapping game boards.

Close up of the screen image


PC-JAMMA Supports 2 Player, 6 Button, and 4 Player, 4 Button cabinets using a CPS2 compatible Kick Harness. Each player’s controls appear as a separate USB game controller. By default Credit and Start for each player are set to MAME’s default keyboard keys. This option can be changed to buttons or both keys and buttons using the PC-JAMMA configuration utility.

Includes a 15W Stereo Amplifier with Stereo / Mono selector

Supports VGA & HDMI inputs including audio over HDMI (in PCM mode).

Features a Force Analog Audio mode that accommodates older HDMI devices that do not support audio over HDMI. This mode sources audio directly from the 3.5mm audio socket and is enabled using the configuration software.

JAMMA RGB Output with composite sync at 15kHz. (3-volt amplitude)

Supported Video input resolutions:
◾640 x 480
◾800 x 600
◾1024 x 768
◾720 x 400 (DOS Text Mode)

Firmware updatable using update software.

Fully Configurable using the Configuration utility.

Includes a terminal interface for easy integration into third-party software.

More information can be found here