Cherry Bonus III- need help with repairs.

[RGTFanatic]

Hi all, As this is my first post I think it's best to just jump in head first.

I inherited my Father's Cherry Bonus III arcade style unit recently. The last time it was used (several years ago) everything worked fine. After transporting it to my home I have found some major problems.

-When powering on I can hear the bill acceptor activating. I can also hear the monitor start to warm up. After that nothing happens.........although the bill acceptor will take a $20 bill.

I have found one power switch inside the cabinet and one on the rear ....these function correctly. There are 3 standard glass fuses......all are in good shape (continuity tested).

I know nothing about these machines. I am however fairly capable with electrical circuits and PCB's.

If anyone can, I sure would appreciate some help figuring this out. I know it won't be a "one flip" cure, so I'm prepared to supply any info/pics you may need.

Thank you so much in advance

Ryc

[channelmaniac]

Check the output of the power supply to ensure the +5v is working. Without that the logic board will never work.

Also, check the battery for leaking and damage to the board.

[RGTFanatic]

Thank you Channelmaniac, my battery is indeed bad (heavily corroded on the negative side). The battery is a Varta 3/v60r. I cannot find a replacement online, but have been told that a 3/v80h is a suitable replacement.

I have also looked at many master boards for sale, but they are all different from mine. My battery is mounted on a secondary PCB that is plugged into the main board via one of the 40-pin slots.........does this make a difference??

When replacing the battery, are there any important procedures I should know? any adjustments to be made after the battery install??

Thanks again very much
Ryc

[asgard]

I would just buy a new board, the battery acid has probably broken a lot of the traces. When you are putting a machine or board in storage you should always remove the battery or it will leak. You can buy the short CB3 board, your board was a conversion from a F5 to a CB3 that's why you have that kit on it.