I killed Pinbot. Flipper issues after rebuild...

Frax

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Rebuilt the right flipper, powered it up, realized the coil lugs on left and right were wired backwards. Had tried to test them in the test modes, heard something akin to a spark pop, and now neither flippers work.

Did I blow a transistor or what? NEITHER one works when the game plays, but other than that, the game starts up perfectly fine. *shrug*
 
So both flippers were wired backwards or just the right flipper that you rebuilt? At the very least I'd say you fried the diode on the coils (if it was that both flippers were wired backwards). If it was just the right flipper wired incorrectly and now both flippers don't work then I am no help to you. :)
 
So both flippers were wired backwards or just the right flipper that you rebuilt? At the very least I'd say you fried the diode on the coils (if it was that both flippers were wired backwards). If it was just the right flipper wired incorrectly and now both flippers don't work then I am no help to you. :)

I didn't touch the left flipper AT ALL. I completely removed the right flipper assembly. Rebuilt it. Quadruple checked the connections between the switches and the coil. But when we put the power wires back to it, the supplies to the lugs themselves were reversed. There are two wires, one blue with yellow, one blue with violet. I had them reversed on the lugs.
 
Looks like the fuse blew on the the flipper supply board. I pulled it and tested it with both my meter and my brother's meter and it's showing bad...so...fingers crossed. :(
 
Somebody correct me if I'm wrong but it's very possible you may just blow another fuse when you fire it up again because I'm guessing at least the right flipper diode is fried (if you wired the clipper wrong). You may want to pull the diode to test it. I went through 3 fuses before I figured that one out.
 
Somebody correct me if I'm wrong but it's very possible you may just blow another fuse when you fire it up again because I'm guessing at least the right flipper diode is fried (if you wired the clipper wrong). You may want to pull the diode to test it. I went through 3 fuses before I figured that one out.

What is the diode going to show if it's bad? I've notice that I can test some diodes and I get very low resistance readings in either direction, and then some of them I get no reading in one direction....as far as I know, if I'm getting no reading in one direction, that means it's good, right?

Should I be unsoldering one leg of the diode before testing? lol =-\
 
just replace it! its cheap why guess? and its a good bet you fried it which sent voltage BACKWARD through the board that fuse saved you from MUCH worse, replace the diode(in the proper direction) correct the wires and the fuse and you should be fine...
 
thats because you are probably measuring across the coil/lamp its attached to ;)

to further the point: in order to test the diode on the coil you MUST clip one of the diodes legs, if it doesnt read .4 to .7 its toast(as previously said dont bother testing just replace)
 
to further the point: in order to test the diode on the coil you MUST clip one of the diodes legs, if it doesnt read .4 to .7 its toast(as previously said dont bother testing just replace)

exactly - you have to cut one leg to test it anyway - may as well cut both and replace it - for a few cents........why bother testing
 
Why test it? Simple answer. I have no replacement diodes, and i had a raid in LOTRO last night. :p I'm going to look for some today when I go to Frys and RatShack but last time I looked I could not find what I needed.

I'm more than willing to accept my dunce hat on all of this, but why would reversing the lugs nuke the diode? Isnt the entire purpose of it to be keeping voltage (and very high voltage at that) from the coil going back to the board? When I hit the button, coil energized for a split second, the collapsing field generates the spike, and then it went through the diode in the *allowable* direction but was too much for it, I'm guessing?
 
Why test it? Simple answer. I have no replacement diodes, and i had a raid in LOTRO last night. :p I'm going to look for some today when I go to Frys and RatShack but last time I looked I could not find what I needed.

I'm more than willing to accept my dunce hat on all of this, but why would reversing the lugs nuke the diode? Isnt the entire purpose of it to be keeping voltage (and very high voltage at that) from the coil going back to the board? When I hit the button, coil energized for a split second, the collapsing field generates the spike, and then it went through the diode in the *allowable* direction but was too much for it, I'm guessing?

if you have the diode backwards instead of preventing reverse voltage it takes all the voltage across the diode burning it up and probably blowing your fuse (as it will sink more current than the coil)
 
Got diodes. Ratshack wanted .59 a piece for two 1N4004. Fuck that. Went to local electronics place a few miles away, no 1N4004, but had 1N4005. Guy who Im assuming is way more knowledgable than me that owns the store said the higher rates one would be fine. Picked up 25.

8 cents each. :p
 
Got diodes. Ratshack wanted .59 a piece for two 1N4004. Fuck that. Went to local electronics place a few miles away, no 1N4004, but had 1N4005. Guy who Im assuming is way more knowledgable than me that owns the store said the higher rates one would be fine. Picked up 25.

8 cents each. :p

yep that should be fine 1n400x are all 1A diodes

1n400x x=voltage rating

1n4001 = 50v
1n4002 = 100v
1n4003 = 200v
1n4004 = 400v
1n4005 = 600v
1n4006 = 800v
1n4007 = 1000v
 
You done texasmame proud, son LOL. :D

Wha?

Sorry, I don't get it. Because I'm using a higher rated part? Or because I killed something? LOL.

I replaced the fuse. Left flipper works again. Currently the iron is warming up to replace the diode..
 
Diode replaced. All is good with the world.

great to hear, but the diode acts like wall to prevent the 48v going back into the boards, remember they run of lower voltages and WILL cause damage, you got lucky the fuse saved you , easy mistake to make ONCE, now everytime you replace or check a coil youll be checking the diodes and lugs ;)
 
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