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Author Topic: Bally Black and White Jackpot Quick Hits  (Read 147 times)

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Offline kmarrocco

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Bally Black and White Jackpot Quick Hits
« on: April 24, 2024, 07:06:33 PM »
Hello,
I recently picked up a Bally Black and White Jackpot Quick Hits machine.  There seems to be a problem with the display.  But when I hook up an external monitor I can see that I am getting an NVRAM error.   Can you please help me understand what to check/test?   Also, any ideas on common display problems?   I am hoping that I won't need to buy a complete replacement display.   Thank you.
« Last Edit: April 25, 2024, 08:49:47 AM by shortrackskater »
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Offline rickhunter

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Re: Bally Black and White Jackpot Quick Hits
« Reply #1 on: April 24, 2024, 09:57:33 PM »
NVRAM you need to replace button cell battery inside the mpu.  As far as the monitor is concerned, do you get a "no signal" message or while booting if you use a bright flashlight can you see text on the monitor faintly?  These monitors usually need the A/D board re-capped/replaced or the inverter needs to be replaced.  The CFL backlights are usually the last spot to troubleshoot.
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Offline kmarrocco

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Re: Bally Black and White Jackpot Quick Hits
« Reply #2 on: April 25, 2024, 03:23:13 AM »
Thank you for the response.   I did already replace both button cells but I can check to see if there could be another one I may have missed.   

Regarding the screen, I do not get a no signal message.   I will try the bright light test. 
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Re: Bally Black and White Jackpot Quick Hits
« Reply #3 on: April 25, 2024, 09:57:43 AM »
The nvram error will not go away until you perform a clear procedure, you will need a clear card.  There's also a battery on the backpane right around the area where the mpu connects to it.  If you pull the mpu out, you should be able to see it between the 2 connectors.
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Offline kmarrocco

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Re: Bally Black and White Jackpot Quick Hits
« Reply #4 on: April 25, 2024, 10:59:03 AM »
Thank you for the information.   The battery on the backplane had 0.5V on it.  I have replaced it and now need to look to get a clear card. 
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Re: Bally Black and White Jackpot Quick Hits
« Reply #5 on: April 25, 2024, 11:24:33 AM »
Quote from: kmarrocco on April 25, 2024, 10:59:03 AM
Thank you for the information.   The battery on the backplane had 0.5V on it.  I have replaced it and now need to look to get a clear card.
Which OS card is in machine?  That will tell which clear card you need.
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Re: Bally Black and White Jackpot Quick Hits
« Reply #6 on: April 25, 2024, 11:27:28 AM »
The OS Card is AVOS00000336-05
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Re: Bally Black and White Jackpot Quick Hits
« Reply #7 on: April 25, 2024, 11:38:43 AM »
Quote from: kmarrocco on April 25, 2024, 11:27:28 AM
The OS Card is AVOS00000336-05
You need a 335 clear card.  PM sent
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