Sandusky, OH
Fuse 901 keeps blowing on the Fliptronic board every time I start up. It is 3 amp sb. Wiring seems correct. Any help would be appreciated. Thanks.
(Topic ID: 287337)
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Quoted from Mrjamma:Fuse F901 supplies +50 volts DC to the Lower Right Flipper
From F901 to header J907 Pin 1&2 (Fliptronics Board) on a Gray/Yellow wire to the Upper Left Flipper.
This flipper is controlled by Q2 ("flipper power" transistor) and Q7 ("flipper hold" transistor).
One of these transistors is suspect to be shorted. Do a visual inspection of the transistors to see if they are burnt and do a visual of the flipper coil to see if burnt or if a wire is off and touching something.
You will need to use a voltmeter and check Q2, Q7 and the flipper coil.
If the flipper coil is burnt, shorted or melted, then it should be replaced along with the related transistors.
Use pinwiki or similar to guide you in the troubleshooting procedure if needed.
It looks like it is Q4. On both boards, it is shorted. Flipper coil is brand new and used another new coil to make sure. All good. I will replace Q4 and see what happens. Thanks for the help.
Quoted from robey99:It looks like it is Q4. On both boards, it is shorted. Flipper coil is brand new and used another new coil to make sure. All good. I will replace Q4 and see what happens. Thanks for the help.
Q4 was the culprit. Replaced it and all good now. Thanks for the help!
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