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**Reel Slots** Gaming Machines => Bally Alpha Reel Games => Topic started by: Phan000 on July 27, 2022, 04:59:12 PM

Title: Bally Startup issue after battery change
Post by: Phan000 on July 27, 2022, 04:59:12 PM

Replaced both batteries.   When initially powering machine, buzzing noise comes from mpu, and no vga message on top screen.

If I turn off the mpu only & turn it back on, machine loads normally.

We typically leave this machine turned off most of the time.  Second or third time this has happened since battery change.

Title: Re: Bally Startup issue after battery change
Post by: sixcardmark on July 27, 2022, 05:06:16 PM

Always turn on both cab switches BEFORE you turn on the MPU.  Also turn off the MPU BEFORE you turn off the other 2 switches. This should keep that from happening.

Title: Re: Bally Startup issue after battery change
Post by: coolwavepic on July 27, 2022, 05:23:07 PM

Do a search on the forum for buzzing sound on MPU and you should find a solution. I know this was a topic years ago.

Title: Re: Bally Startup issue after battery change
Post by: sixcardmark on July 27, 2022, 06:27:44 PM

https://newlifegames.com/nlg/index.php?topic=25522.0

Title: Re: Bally Startup issue after battery change
Post by: Phan000 on July 27, 2022, 06:54:59 PM

Interesting^. Thanks Mark.  I’ll try to boot it tomorrow without the batteries.

Strange as I did replace batteries once before when I got the machine.  Just powered on a switched outlet strip since then.   

Title: Re: Bally Startup issue after battery change
Post by: Sunrise Side on July 27, 2022, 08:06:21 PM

Changed battery on backplane?

Title: Re: Bally Startup issue after battery change
Post by: Phan000 on July 28, 2022, 05:19:48 AM

Quote from: Sunrise Side on July 27, 2022, 08:06:21 PM

Changed battery on backplane?

The two batteries on the mpu

Title: Re: Bally Startup issue after battery change
Post by: sixcardmark on July 28, 2022, 06:56:11 AM

Always a good idea to replace them all at the same time on Alpha.

Title: Re: Bally Startup issue after battery change
Post by: Phan000 on July 28, 2022, 10:51:21 AM

Ok,  will definitely do that.

Where are the batteries, besides in the mpu?

Title: Re: Bally Startup issue after battery change
Post by: sixcardmark on July 28, 2022, 12:04:09 PM

There's a 2032 on the backplane.

Title: Re: Bally Startup issue after battery change
Post by: Phan000 on July 29, 2022, 06:21:46 AM

I replaced the battery on the backplane, buzzing at startup persisted.

I pulled both batteries on the mpu, hooked it up outside of the cabinet to a pc monitor.

Monitor had no display.

I returned the mpu to the cabinet and turned on all switches at once with a power strip.   Nvra error, but no buzzing.

After clear,  machine powers normally without need to turn off mpu.


Not sure which step did the trick.