Bally E2216 help

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coorslight115:
working on a Bally Continental 4 reel 1989 E2216 machine for a friend. It was working but sat for a few years. I replaced the battery because it was dead. When you power on the machine it lights up and the display shows 50 .0.00  . will not accept coins, they go into hopper, not returned. Press the test button and you get 50.0.006 on display no matter how many times you press it. pressing the reset you get a 00001 on display and goes back to 50.0.00. I have checked door switch and it works. I can not enter any test mode. Also checked all the fuses...reseated all connectors and plugs.
Any ideas??? I usually do not mess with EM stuff..

dhellis:
One thing that you might want to try is unplugging the IO board and see if you then get a 50 0000 code and can run tests. None of the tests will
pass but what we are looking for is the ability to get into the test mode.

If you get the 50 000 code then the problem is likely to be on the IO card and the first thing I do on those is to take a wire brush to all
of the contact pins.

coorslight115:
unplugged all connectors on I/o board and turned on. get 500.0.00 on display. each and every time I press the test button I get 500.0.06 when pressed and returns to 500.0.00 when released. Also there is a relay behind the hopper on the floor of cabinet that clicks to match each press of the test button.  Also when everything is plugged in there is a solenoid behind the handle mech all by itself that energizes every 30 seconds or so. it has nothing hooked to it. just looks like a noise maker...

dhellis:
So far this is sounding like an MPU board problem. Is this an E2000 MPU board or and E1000 MPU board. Some E2000 machines used E1000 MPU's
so that is why I ask. The E2000 MPU will have the battery and RAM mounted directly to the board and the E1000 will have a daughter card for
the battery and ram. The actual board make little difference at the moment but may become relevant later.

Some of the things that I have seen is bad connections under the 8T28 chips that are close to the plug where the IO cable goes. I have also seen
bad connections under the bipolar proms. When I am talking about bad connections, these may or may not be visible so is best just to reflow some
solder and see if that helps.

I have seen  bad bipolar proms cause similar problems and that is where the E1 vs E2 comes in because they are different data in the proms for
each of the boards

coorslight115:
Here are some pics of boards...zoom in if needed

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