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Subject: Re: red white and blue


Author:
Jeremy
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Date Posted: 16:31:19 11/18/09 Wed
In reply to: kenny 's message, "red white and blue" on 13:14:13 11/09/09 Mon

Is the machine giving a tilt number or any number in the coins-played, credits-window or any of the LED displays? If it is giving a tilt number then that will indicate the problem the machine is having. If not then try to reseat the MPU being sure that it is seated correctly.

If there are no display codes or numbers on the LED displays then the problem could be The MPU, wiring, motherboard, or power supply. Power supplies rarely go bad with the S+ games. I have seen the power supply plug go bad where it plugs into the mother board. You can also check the voltage there to be sure it is not the power supply. The only real problems motherboards usually have are EEPROM that goes bad and causes a door open. I have seen loose soldering connections where the power plugs in go bad causing problems.

MPU and Wiring are by far the usual problems when getting no power (As long as the fuses are good). There are four main diodes on the MPU where the power comes in that often go bad and need to be replaced.

If you have set-chips for the game and the know-how it is easiest to start part swapping as long as you have another of the same game. Part swapping is when you swap out things like the MPU with a known good and see if the problem follows. Be aware though you may need the set-chips to re-enable some options such as the BV.

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