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Author Topic: Replacing the Battery  (Read 2093 times)

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Offline Tom Mason

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Replacing the Battery
« on: January 29, 2021, 06:16:05 PM »
Hello! Is the battery in a SIGMA Treasure Wheel soldered to the board? I could not, with gentle pressure, slide the battery out. The contact appears to be soldered to the top of the battery?


What’s the procedure here: [size=78%]Touch an iron to the lead and push the battery out?[/size]
[/size]
[/size][size=78%]Also, the battery doesn’t appear to be the same shape as the Energizer 2450 I bought locally. Is this the correct replacement?[/size]

Offline Trisail

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Re: Replacing the Battery
« Reply #1 on: January 29, 2021, 06:35:11 PM »
I don't have that machine

Flip the board and look and see if you can tell if there are leads soldered that would match up with the battery position. It looks to me as though it is welded to that 'contact'

I would recommend replacing all the aluminum electrolytic capacitors.

Tony
Tony

You can fix almost any electronic device by replacing the aluminum electrolytic capacitors.

Offline Tom Mason

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Re: Replacing the Battery
« Reply #2 on: January 29, 2021, 06:51:48 PM »
Thank you Tony.


I did not fully remove the board to check the underside. I’ll take a look and share my progress.


Replacing the caps sounds like good advice. Do you replace those with like parts, or is there an upgrade I should consider?


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Re: Replacing the Battery
« Reply #4 on: January 29, 2021, 07:13:56 PM »
that battery is soldered on to the mb.  Your best bet is to install a holder like this:  https://www.digikey.com/en/products/detail/keystone-electronics/1025/49949?utm_adgroup=Battery%20Holders%2C%20Clips%2C%20Contacts&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_Product_Battery%20Products&utm_term=&utm_content=Battery%20Holders%2C%20Clips%2C%20Contacts&gclid=CjwKCAiAgc-ABhA7EiwAjev-j5GJVR_ST3pYiEmLwD09QVL4mY0xERqyn8fcBeqnrQaiHRcOHtPxrBoCPhwQAvD_BwE


I have those in my parts bin, so this would be an easy upgrade for me.


Would there be an advantage to using a two cell AA holder instead, to ensure that there is always current during a battery change? My Bally machine had this upgrade made to spare the need for RAM chip resets. Would this wisdom apply to SIGMA machines as well, or is the RAM reset done with the key?

Offline Trisail

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Re: Replacing the Battery
« Reply #5 on: January 29, 2021, 07:18:03 PM »
Hopefully you can remove that battery and install a battery holder or at least get a battery with leads that you can solder in place of the one that is there. You can't solder leads on a battery.

When replacing the caps - replace with the same uF value, if they are a strange value you can replace with closest value up or down. Replace with a voltage rating the same or higher - physical size is the other thing to watch out for, most caps today are smaller and vary in size from manufacturer sometimes. Just measure the size of the one you are replacing and get one that will fit, or the same size. Try to get caps rated at 105 degrees c not 85 degrees c.

I am repairing power supplies and I have many capacitors if you just want a few to do the board instead of ordering many or try to order just what you need. I can put a kit together if you send me a PM with the uF values - voltages and sizes. The caps are inexpensive but the shipping is what costs. I more than reasonable on the caps.

Tony
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You can fix almost any electronic device by replacing the aluminum electrolytic capacitors.

Offline Tom Mason

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Re: Replacing the Battery
« Reply #6 on: January 29, 2021, 08:14:26 PM »
Thank you for the detailed advice. I’ll inventory the caps and see if I have suitable replacements. If not then I’ll take you up on your offer!

Offline Trisail

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Re: Replacing the Battery
« Reply #7 on: January 29, 2021, 08:18:53 PM »
Sounds good. Most if not all should be radial, let me know if any are axial.

Tony
Tony

You can fix almost any electronic device by replacing the aluminum electrolytic capacitors.

Offline Stayouttadabunker

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Re: Replacing the Battery
« Reply #8 on: January 29, 2021, 08:34:47 PM »
Here...lemmie help you with that....lol

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