Atari Hard Drivin' upright cabine Memory Backup Battery? Where?

[JT83]

Hi all, new one here. Had to register up, cause this battery "problem" wonders me. Where is that Backup Battery for memory?
How does it look like and can I order same kinda new or do I put some new (like those phone 3xAA batteries)
Game itself works fine, but every time when I start it up, high scores erase and starts from calibre screen. Then brakes don't work, but if I do start up from testing screen and then to game. Brakes works just fine. Figure that out So maybe when I install new batteries, it would remember after test screen that brakes "work" and scores too?

I would appreciate answers with pics and simple english, cause english isn't my strongest language (maybe I am simple person too )

Many thanks to all and I really hope to get help for my project/restoration

 

[2huwman]

Hi, you need to replace the Time Keeper and ZeroRAM chips at locations 200E and 210E on the main PCB. The replacements are M48Z02-150 ZeroPower RAM and a 48T02-150 TimeKeeper RAM

I've done this myself a few years ago on my Hard Drivin', but I took this info from https://forums.arcade-museum.com/threads/hard-drivin-high-scores-not-saving-after-power-down.279140/

 

[JT83]

Wow, thanks for quick reply. I can now order those. Question, are those easy removable like plug on or do I need to heat my soldering iron

 

[2huwman]

They're socketed so no soldering required!