Junkyar autolaunch problem

[arakissun]

So this thing may become more in deep than I expected.

Problem:
When power it on always kicks two times,sometimes one time but very rare.

Only happen when I power on the machine.If I go in test menu and exit don't do it.

What I did until now:
1.Replace the switch on auto launch assy whit new.Testi it and it's fine.
2.Checked all optos and especially these on trough assy.Everything is fine

One thing happen today when I begin to trace Green/Brown wire and little shake the wires-thw kicker activated rappidly like never before.After that it worked like the present problem.



The game plays fine but this thing is not right for me.

 

[arakissun]

Changed 16-opto board no difference-same problem
Tested with working opto boards on trough mechanism-same problem

But how is normally to operate the machine?
It want 4 balls.
Is there need to have a ball in the left lock mechanism under the small ramp?
Because when I put 4 balls in the trough mechanism sometimes when I begin to play(push start button) it load it automatically there and in theory I begin to play with 3 balls in trough mechanism.
But sometimes when I begin to play don't load it and play with 4 balls in trough mechanism.
At both situation the game plays fine.

If there need to have ball in lock mechanism under the small ramp and I have 4 balls in trough mechanism,isn't it normally when I power on the machine to load it by itself automatically,not when I push start button?

 

[strobey]

One thing happen today when I begin to trace Green/Brown wire and little shake the wires-thw kicker activated rappidly like never before.After that it worked like the present problem.

On that basis alone it sounds like a short to ground. Trace that solenoid return wire again and pay close attention to any exposed wire.

Tim

 

[arakissun]

It was not this coil.Now I see it's the coil that is on trough mechanism.But did it one time without the balls.
The power wire is the red and the other one is return right?

 

[Deleted member 2463]

Check balls haven’t become magnetised also but defo sounds like a short.


Sent from my iPhone using Tapatalk Pro

 

[arakissun]

Yes,I think is some short.It will be not easy task,but want to know for how the machine is with the balls at my second post?