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High Speed Weak Right Flippers

Hammerhead

Well-Known Member
Nov 16, 2012
1,573
163
63
Melbourne
I've completely rebuilt the flippers on my High Speed; new coils, new EOS switches, new diodes, etc. The left flipper is nice and strong and you can easily rip the spinners. However, the right flippers are quite weak; the upper right can barely get the ball up the ramp and you have to hit the shot perfectly, the lower right cannot get the ball up to the pops.

I've checked all the wiring, the diodes, the switch gaps, everything looks like it should be correct.

I've attached some photos, any help would be appreciated

63df61e6d9a91290e65d633b23d48ce17663291b.jpg 691604ac2a2cb6bf11b6f705ad014d2960a36280.jpg 930225dc4e9c9d239cd7573fc0e63dcdfeabb8a1.jpg bae3cfe876dabf3c90d5af4a1d394de6906ae95f.jpg
 

Hammerhead

Well-Known Member
Nov 16, 2012
1,573
163
63
Melbourne
In the manual I've taken the following snapshots; they both say that power wires go to the banded side of the diode. If that's the case it looks like all three flippers are wired incorrectly. I have the following questions:
- if they're wired backwards shouldn't I have blown something by now?
- if they're wired backwards why does the left flipper work well but the others are weak?
- the snapshots say the trace wires should go the unbanded end of the diode; I have no trace wires, they are all coloured differently than the manual

Can someone post photos of their flippers so I can maybe see where I've gone wrong.
 

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Hammerhead

Well-Known Member
Nov 16, 2012
1,573
163
63
Melbourne
I've isolated the issue to the lower right coil. I swapped it out for the old beat up coil and the flipper strength returned, but it sticks so it needs to go.

This was a brand new coil; how can I test to see what is wrong with it.
 
Last edited:

luch

Super Member
Nov 18, 2012
3,717
771
113
Newmarket
www.topl.ca
try a rat tail file , and file it out a bit , then put in a new sleeve , also did you try the new coil on the other side that works ? you may have the diode the wrong way . just trying different things to help you
 

ToMMy

New Member
Dec 18, 2018
29
21
3
Orillia, ON
The new lower right coil looks discoloured to me, in an overheated kind of way (top picture).
Probably has a winding short.
 

sylvain

Active Member
Apr 27, 2013
209
75
28
Ottawa, ON
The real question is what made it burn...
I assume it was good 'from the factory'.

EOS not opening?
or reversed wire connections on lugs?

Good luck!
-Sylvain.