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Old 07-08-2017, 05:40 PM
Andy1961 Andy1961 is offline
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Just wondering if anyone can help me, the ball thrower solonoid is constantly on when I power up my machine. Obviously I can only turn the power on for a few seconds otherwise the solonoid will burn up. The pinball machine was working fine when I put it in storage for just over 12 months ago but now I have this issue. Any help would be much appreciated

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Andy
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Old 07-08-2017, 08:47 PM
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The first thing to check is if the battery on the mpu board is leaking. The leaking battery acid can cause all kinds of problems. Second is if you have a DMM , check the solenoid driver transistors on the solenoid driver board. Do a resistance test from the metal tab to ground to check for a shorted driver transistor. Last is to check the diode resistance on the coil with the diode unsoldered.
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