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Old 06-15-2013, 10:43 AM
nTronz nTronz is offline
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Lightbulb BoP Power Issue

I've had a Bride of Pinbot for about 2 years. It has been working without any problems this whole time.

I haven't played the machine in about 2 months. When I turned the machine on last night, the machine started up normal, then switched off and left the Bride Helmet lights and a few random GI lights on. After a second, it "reset" and started the start sequence over again with all lights working. The machine finished, I started and the flippers worked fine, after a minute, the machine did the same thing. A few random lights on with everything else off, a few static sounds from the speakers, then it came back on again after about 10 seconds... and it maintained the game state (Didn't go through it's typical startup but just picked up the game and score from where it left off).

I've checked the voltage at the wall, I'm getting a constant 120V. The wall plug looks fine and seems to be getting a good connection. I am thinking the power problem has something to do with the machine.

Does anyone have an suggestions or places to start looking? I have a pretty technical background so I am fairly confident in checking everything out myself, but I need a place to start and places to look since I'm fairly new to pinball electronics.

Thanks!
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Old 06-15-2013, 12:05 PM
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pinballdaveh pinballdaveh is offline
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have the batteries on the cpu board been checked or changed recently? they should be changed once a year or less to avoid leakage and board corrosion. is the +5 volts measure good on the cpu and driver board? voltages lower than 4.8 can cause resetting and other problems. voltage drop might occur between connectors.
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Old 06-15-2013, 05:09 PM
nTronz nTronz is offline
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Thanks for the quick replay. I checked the CPU board, and much to my surprise I found that there was some modifications made. If you see my uploaded photos, you will see that the original owner removed the 3-prong AA holder and replaced it with a single lithium battery.

I am thinking that you are right, the battery is dying. Is anyone familiar with this mod? I am not sure how safe it is for a williams era pin to use a single lithium setup. Sure, it gives you a longer run, but the guy just sutured the ends to the board. Maybe this is correct? Let me know what you think.
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Old 06-15-2013, 05:59 PM
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most of the remote battery holders ive seen for williams has been 3 aa's. ive never seen that type of lithium or could be a ni-cad. the only re-chargeable ni-cads were used in early bally & stern ss games. if you replace that battery i would go with the 3 aa type.
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Old 06-16-2013, 08:54 AM
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Question Wow Lithium ?

Quote:
Originally Posted by nTronz View Post
Thanks for the quick replay. I checked the CPU board, and much to my surprise I found that there was some modifications made. If you see my uploaded photos, you will see that the original owner removed the 3-prong AA holder and replaced it with a single lithium battery.

I am thinking that you are right, the battery is dying. Is anyone familiar with this mod? I am not sure how safe it is for a williams era pin to use a single lithium setup. Sure, it gives you a longer run, but the guy just sutured the ends to the board. Maybe this is correct? Let me know what you think.
Hey, Now that is something you don't see every day. I wonder what is the stated voltage of that lithium battery. I would like to know what voltage is present across that battery with the machine both turned on then off.
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