This 5101 NVRAM is being replaced by the newer Dual CE version to cover more machines including Williams System 3 & 4. Once the stock has been sold, the new version will take over.  If you would like the newer version now, the item number for it is.. /itm/326032228847

This upgrade replaces the 5101 SRAM fitted to Bally Classic, (Dash 17, 35 & 133), Stern Classic, (MPU-100 & MPU-200), Gottlieb System 80, Zaccaria Generation 1 and Williams System 5 thru 7 games. All the boards, except the Stern MPU-200 boards, require 1 x 5101 NVRAM. The MPU-200 boards will need the standard Stern 5101 NVRAM. (see below). Due to possible timing issues, this NVRAM is no longer recommended for System 3 & 4 CPU boards. The new Dual CE Version, as above, now works with these boards.

It is also suitable for any other electronic equipment that uses the 5101 SRAM with a battery backup.

By upgrading to NVRAM you will never have to replace the batteries again, and neither will you have to worry about battery leakage which can cause £100's of pounds damage to repair or replace the board and/or components. Once upgraded, the NVRAM will retain all of your configuration settings and High Scores for many years to come.

The Bally and Stern Classic games, (Socket U8), and Zaccaria Games, (socket IC7), were supplied with the SRAM chip already fitted in a socket so they are 'plug & play' with no soldering required.
 
All Williams System 3 Thru 7 series and Gottlieb System 80 games were shipped from the factory with the SRAM chip soldered directly to the board. This will need to be removed before installing the new NVRAM so some soldering will be required. On the Williams boards, the SRAM is located at U19 and on the Gottleib System 80 Boards, at Z5.

As all of the Williams and Gottleib boards will require the existing SRAM to be desoldered and removed from the board, if you do not have proper equipment or experience to desolder ICs and install a socket, this mod may not be for you as some of these boards have delicate traces. Please be aware of this and seek technical advice before purchasing the 5101 NVRAM module. Unfortunately, we are unable carry out this work.

On some machines, the Real-time clock for specialist functions or other time-sensitive modes will not work correctly. These include, but are not limited to... WHO Dunnit, Dirty Harry, Johnny Mnemonic, Congo, Junk Yard, Theatre of Magic, NBA Fastbreak, Creature From the Black Lagoon and Twilight Zone. There are some Easter Eggs on Bride of Pinbot that require the correct time as well.

If you have any doubts, before ordering, please contact us with the name of your machine and the part number printed on the SRAM chip. We will check and confirm if this upgrade will work.

Ebay search  -  Battery Eliminator  for all NVRAM listings or see our shop for other Pinball related products.

Each NVRAM is tested before despatch to ensure it is working correctly.

Any attempts to modify your board are AT YOUR OWN RISK.

Instructions will be supplied for all games, including SRAM locations and jumpers that may need to be changed.

Postage is free in the UK, but there is a cost for European and Rest of World Buyers. See Listing for details.