Not a biggy but it is bloody annoying me.Machine works fine although , i believe when the ball hits the kickers , either top or bottom ,the " Advance Right bonus" and the " Advance left bonus " are supposed to toggle. Mine does not. I can normally nut things out but this one has got me stumped.
If someone could point me i the I would be greatly appreciative.

bonus1 (resized).jpg

Thanks Guys, I have been looking for the " Change Relay" Is that the Alternating Relay? ( saying out loud sounds obvious though).
I will look under the hood later on today and report back ...Cheers

Update!
Buzzed out the Change and Alternating Relay..All fine. Gave them a clean for good measure though.
Moved up to the No. Match Unit. I could see the switch was not adjusted correctly. Cleaned and adjusted it .....Adjusting that S.O.B took a while.
So.. if i Activate the switch the Advance lights toggle... Now we are talking!
Time to test.. I see the Mech. does not increment . On closer inspection the little spring on the "C" shaped plastic which meshes with the gear has a broken spring..Crap!
I have managed to get it going.( sort of) with a soft spring and a cable tie..I know ..I know ..but it works.
Will have to replace the Mech I think as there is a bit of slack on the shafts plus I would like to fix it proper.
If anyone has such a beasty out there please contact me.
Thanks Guys for all your help.

Sorry Guys but another issue has reared it ugly head...How about this one

- Start a game ..All good, Ball #1 play away , It drains
- Ball # 2 Play away ball drains . It wont advance to Ball #3

I pop the bonnet and simulate it e.g press bumper then out hole . It increments Ball #1 to ball #5 then Game Over.

What the Hell!.

Now , If I Advance the right Bonus during Ball #2 and let it drain the ball just sits in the out hole and does not fire.
Only on ball #2 though. Balls #1,3,4,5 ...all good
I can can simulate this and it fails every time.
Any clues on where I should be looking would be greatly appreciated.

Cheers HowardR . I will do . If I manually trip the outhole relay , whist in error. It will fire. I am wonder what the connection is between the Right bonus and not kicking the ball from #2 to #3.

Thanks for the pics . I went and checked them they are all good

Update.... Madness is starting to set in.
I noticed the right Bonus unit was not indexing backward properly. On closer inspection the top tooth was not meshing properly and jumping. That's fine.. I increased the spring tension operated it manually , working ok . Fire it up , is now decreasing. NOW.. when the ball is in the Right bonus hole. It decreased,( the lights move down) but no score is being added, as per the left bonus.
Here is the Kicker , ( excuse the pun). the ball count , increases as per the outhole. just before the bloody right bonus kicks out. ( ball#1 to Ball #2 etc..)
What the friggin hell!..But hey the original problem is not there anymore. Off the fridge to get a beer.after 6 hours.. i reckon I deserve one ..
I can send pics or provide any other information ... This thing is whipping me hard!!