Boca Raton, FL
Does anybody have any advice as to why my right flipper would be stuck in the up position making a humming noise?
Stern walking Dead pro?
(Topic ID: 260508)
Ahh - I am learning right now on my star trek that my stuck coil is a transistor. Page 13 manual will show you which components the flipper is using (Q15 drive transistor, etc). Check the connections for blown things, test the transistor, check those things listed on page 13.
Quoted from isJ:Ahh - I am learning right now on my star trek that my stuck coil is a transistor. Page 13 manual will show you which components the flipper is using (Q15 drive transistor, etc). Check the connections for blown things, test the transistor, check those things listed on page 13.
Thanks, this might be above my knowledge.
Could be the transistor or the diode on the coil or the coil itself. Do not leave on!!! If your coil got too hot you might want to replace all the above.
I just had this exact problem on a Bally machine, turned out to be a bad opto board for the flipper button. You could try swapping the flipper button opto boards. Its an easy thing to do that doesn't really require any electrical knowledge, just a couple plugs and a couple screws on each side. See if the problem travels over to the other side. If thats the case its a pretty cheap and easy fix.
Quoted from plovis:I just had this exact problem on a Bally machine, turned out to be a bad opto board for the flipper button. You could try swapping the flipper button opto boards. Its an easy thing to do that doesn't really require any electrical knowledge, just a couple plugs and a couple screws on each side. See if the problem travels over to the other side. If thats the case its a pretty cheap and easy fix.
Does Stern use optos or leaf switches for the flipper buttons? Either way, OP, check for a stuck switch first before doing more complicated stuff. Go into switch test mode and see if that flipper button is closed.
Quoted from Nokoro:Does Stern use optos or leaf switches for the flipper buttons? Either way, OP, check for a stuck switch first before doing more complicated stuff. Go into switch test mode and see if that flipper button is closed.
New stern uses leaf switches.
Start Simple. Make sure none of the EOS or button switches are simply not gapped correctly or in contact before tearing into boards.
Quoted from Buzz:diode on the coil
SAM games don’t have diodes on the coils from the factory. The diodes are on the driver board. See the Pinwiki for more info.
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