Author Topic: IGT s2000 running WITHOUT any batteries (Read 1913 times)

ItsaSlotMachine · « **on:** February 28, 2020, 03:02:37 PM »

Note: I am unsure what the appropriate thread is for this topic

I just saw a video of a person playing their s2000 and then when they pulled out the MPU board it didnâ€™t have the green Verta or coin battery. I was pretty surprised and wondering how one might do this?


https://youtu.be/YCcpvlTM77E

rickhunter · « **Reply #1 on:** February 28, 2020, 03:12:00 PM »

The battery is installed under the mpu. It would have been all over the tech slot forums if he had really found a way.

The varta battery is not needed and most of use remove the battery as part of our machine restoration steps to avoid future damage to the mpu.

pinshoppe · « **Reply #2 on:** February 28, 2020, 03:40:54 PM »

That is very curious. I did notice that where the coin cell was, the solder joints were filled. Call me skeptical but im wondering if there isnt a battery soldered on the underside of the board and hes pulling our leg.

lookes · « **Reply #3 on:** February 28, 2020, 04:20:27 PM »

RAM chips replaced with NVRAM chips?

sixcardmark · « **Reply #4 on:** February 28, 2020, 04:41:34 PM »

Quote from: rickhunter on February 28, 2020, 03:12:00 PM

The battery is installed under the mpu. It would have been all over the tech slot forums if he had really found a way.

The varta battery is not needed and most of use remove the battery as part of our machine restoration steps to avoid future damage to the mpu.

rickhunter · « **Reply #5 on:** February 28, 2020, 05:43:46 PM »

Quote from: lookes on February 28, 2020, 04:20:27 PM

RAM chips replaced with NVRAM chips?

NVRAM chips is what all these machines use, that is why they require batteries to make them "NON-Volatile". Flash nands are also "NVRAM" by the very definition but it's not like you can just replace the older style battery backed ram with newer style nvram without support circuitry and logic to manage it. The plain simple fact is that there is probably a battery soldered on the other side of the mpu board that is not visible.

Retro tech repair · « **Reply #6 on:** February 28, 2020, 08:30:30 PM »

That is my video there is an un populated diode and resistor that if you populate it bypasses the error you have to do the ram clear every time you boot the machine tho.

Retro tech repair · « **Reply #7 on:** February 28, 2020, 08:31:59 PM »

The parts are listed as optional on the 50x schematic.

Retro tech repair · « **Reply #8 on:** February 28, 2020, 08:36:04 PM »

Quote from: rickhunter on February 28, 2020, 05:43:46 PM

Quote from: lookes on February 28, 2020, 04:20:27 PM
RAM chips replaced with NVRAM chips?

NVRAM chips is what all these machines use, that is why they require batteries to make them "NON-Volatile". Flash nands are also "NVRAM" by the very definition but it's not like you can just replace the older style battery backed ram with newer style nvram without support circuitry and logic to manage it. The plain simple fact is that there is probably a battery soldered on the other side of the mpu board that is not visible.

Nvram do not need batteries. S2000 uses an sram or static ram.

Stayouttadabunker · « **Reply #9 on:** February 28, 2020, 08:58:05 PM »

That's awesome vtyler!

Could you explain how we could do this mod?
It could be a sticky on which IC's we need to solder in.
I like messing around with my stuff!! lol

When you said "50x", did you mean it as like a 504 MPU for example?

Retro tech repair · « **Reply #10 on:** February 28, 2020, 09:05:58 PM »

Quote from: Stayouttadabunker on February 28, 2020, 08:58:05 PM

That's awesome vtyler!
Could you explain how we could do this mod?
I like messing around with my stuff!! lol

The mpu schematics available in the download section says exactly what parts to put where its not a mod its a option that was never populated on the boards. I originally posted this on the old .net site but everyone deemed it useless I havenâ€™t built a board with these populated in a long time most my customers didnâ€™t want to go through the process every time they turned it on just wanted to replace a battery every so often.

Retro tech repair · « **Reply #11 on:** February 28, 2020, 09:09:03 PM »

50x refers to all the 500 boards 501-504 I think the only difference is on the 504 boards igt fixed there faulty grounding issues for the on board sound amp â€œwhat causes the hum in the pre 504 boardsâ€.

Stayouttadabunker · « **Reply #12 on:** February 29, 2020, 07:44:57 AM »

vtyler,
Could you figure out a way we could use a rechargeable lithium cell?
Or could this be a bad idea due to non-existent charging unit and charging shut-off components?

Retro tech repair · « **Reply #13 on:** February 29, 2020, 07:50:54 AM »

Quote from: Stayouttadabunker on February 29, 2020, 07:44:57 AM

vtyler,
Could you figure out a way we could use a rechargeable lithium cell?
Or could this be a bad idea due to non-existent charging unit and charging shut-off components?

I actually was working on that before i quit working on slots. It should be possible using a third party charge controller for the battery. using a super capacitor may also be an option similar to what they are doing to old pinball machines. Sadly after closing my slot shop I rarely get time to tinker on the slots much.

Stayouttadabunker · « **Reply #14 on:** February 29, 2020, 08:55:24 AM »

Oh okay thanks.
Maybe I'll figure out a way.
Tinkering is what I do best...

Retro tech repair · « **Reply #15 on:** February 29, 2020, 09:18:17 AM »

Quote from: Stayouttadabunker on February 29, 2020, 08:55:24 AM

Oh okay thanks.
Maybe I'll figure out a way.
Tinkering is what I do best...

Yep thats the main reason i got into slot work. I have over 60 s2ks, one of them i have booting off a sound simm.

ItsaSlotMachine · « **Reply #16 on:** February 29, 2020, 11:08:30 PM »

Quote from: Retro tech repair on February 29, 2020, 09:18:17 AM

Quote from: Stayouttadabunker on February 29, 2020, 08:55:24 AM
Oh okay thanks.
Maybe I'll figure out a way.
Tinkering is what I do best...
Yep thats the main reason i got into slot work. I have over 60 s2ks, one of them i have booting off a sound simm.

That is so impressive! I saw your video on YouTube and Iâ€™m Space Cadet Wannabe. You really do have some amazing technical skills, Where did you learn how to do all this? I would love to learn because I am starting to get into circuitry since I do follow the STEM community on Twitter.

Retro tech repair · « **Reply #17 on:** March 01, 2020, 10:10:14 AM »

Quote from: ItsaSlotMachine on February 29, 2020, 11:08:30 PM

Quote from: Retro tech repair on February 29, 2020, 09:18:17 AM
Quote from: Stayouttadabunker on February 29, 2020, 08:55:24 AM
Oh okay thanks.
Maybe I'll figure out a way.
Tinkering is what I do best...
Yep thats the main reason i got into slot work. I have over 60 s2ks, one of them i have booting off a sound simm.

That is so impressive! I saw your video on YouTube and Iâ€™m Space Cadet Wannabe. You really do have some amazing technical skills, Where did you learn how to do all this? I would love to learn because I am starting to get into circuitry since I do follow the STEM community on Twitter.

I donâ€™t consider myself that highly skilled there are a lot of intelligent people on this form i have learned a lot from different members. I actually donâ€™t have any official training after a us high school diploma. Most of my knowledge with electronics came because i used to work for an ewaste facility the owner would let me take certain things home(servers, computers, game consoles, and old arcade games). Most the time these items were none functional so i had to fix them. If the parts we too expensive I decided to try and fix the parts i had. Because of this i spent a lot of time reading service manuals, chip documentation, and when available board schematics. Now i watch a lot of YouTube repair videos.

ItsaSlotMachine · « **Reply #18 on:** March 01, 2020, 01:50:42 PM »

What a neat hobby that you fixed up old electronics. There must have been a few slot machines in the E-waste pile at some point lol. You are smart to read service Manuelâ€™s and watch YouTube videos. I might start doing that if I do stumble across some old electronics to tinker with

rickhunter · « **Reply #19 on:** March 02, 2020, 05:33:28 AM »

I stand corrected! Learned something new today !

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Author Topic: IGT s2000 running WITHOUT any batteries (Read 1913 times)