Author Topic: Game Over before Game Over  (Read 377 times)

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Offline millsy

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Game Over before Game Over
« on: August 02, 2009, 04:36:32 PM »
Well its about time to solve another EM problem everyone.
Millsys playing his Jumping Jack,finally getting a high score then  ^&^ goes to GAME OVER.
There is only one common occurance when this happens that I have noticed - Seems to only occur when the ball hits the 100 point Pop Bumpers - Any theories.
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Offline arcadoz

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Re: Game Over before Game Over
« Reply #1 on: August 02, 2009, 06:43:22 PM »
First theory- check tilt switches, pop bumpers thump the playfield or thump the playfield yourself.
It probably won't be that but it is the easiest to check.
 :2cents:
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Offline The pinballist formally known as Dean Morgan

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Re: Game Over before Game Over
« Reply #2 on: August 02, 2009, 07:04:11 PM »
Not enough clearance on the contacts of the Game Over Relay,  with impact of Pop Bumpers it makes?  !@#
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Offline Strangeways

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Re: Game Over before Game Over
« Reply #3 on: August 04, 2009, 04:46:17 PM »
Not enough clearance on the contacts of the Game Over Relay,  with impact of Pop Bumpers it makes?  !@#

That's my guess !
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Offline millsy

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Re: Game Over before Game Over
« Reply #4 on: August 06, 2009, 09:01:37 PM »
Checked the game over relay -checked out ok. As this relay is situated at the floor of the cab and not on the PF,I dont think the problem is movement related, I suspect something is activating this relay during play.
99% sure its related to the pop bumpers - maybe I disconnect the pop bumpers to be 100% sure. I did replace these bumpers with new coils - the new coils had resistors across both terminals (Refer Pict) the coils would only work if i disconnected these resistors - may be related ? Any thoughts on this theory?
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Offline ajlaird

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Re: Game Over before Game Over
« Reply #5 on: August 06, 2009, 09:16:04 PM »
Are you sure that is not a diode rather than a resistor?

Offline Mr Pinbologist

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Re: Game Over before Game Over
« Reply #6 on: August 06, 2009, 09:25:35 PM »
Thats a diode and is definitely not a good thing to have on an EM coil *.*

If the coils you used to replace the originals had these diodes on them when you got them, they must've been intended for a SS pin. You did the right thing to cut them as they would've been putting a short across the coil.

Just a thought... are the coils the same part number as the originals??

Cheers...Mitch
« Last Edit: August 06, 2009, 09:28:12 PM by Mr Pinbologist »

Offline millsy

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Re: Game Over before Game Over
« Reply #7 on: August 06, 2009, 09:45:14 PM »
Just looking at the schematics - Looks like I have fitted A-1496 coils instead of A-1493. Could this be the problem ? ,maybe I will put the old coils back in and see what happens.
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Offline Mr Pinbologist

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Re: Game Over before Game Over
« Reply #8 on: August 06, 2009, 09:51:30 PM »
Worth a try for sure. I'm not sure but maybe the A-1496 may have lower resistance windings thatn the original coils  !@#

If thats the case it could be causing the problem you're having


Offline Strangeways

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Re: Game Over before Game Over
« Reply #9 on: August 06, 2009, 11:46:55 PM »

Put the original coils back in. A-1496 are a coil common in sys1 and sys80 machines. Diodes are there to protect the driver boards in DC circuits.

You can use A-1496 in an EM, but as you have found out - you need to remove the diode.
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Offline millsy

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Re: Game Over before Game Over
« Reply #10 on: August 07, 2009, 10:26:17 AM »
fitted old coils back -still resets to game over -definately only happens when pop bumpers activated -back to the drawing board. &^&
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Offline ddstoys

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Re: Game Over before Game Over
« Reply #11 on: August 07, 2009, 03:41:27 PM »
Do you have a Slam switch on the playfield Kev?   Bumpers might be opening or closing that causing GAME OVER?

Offline millsy

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Re: Game Over before Game Over
« Reply #12 on: August 10, 2009, 12:51:09 PM »
Problem solved (Daniel was close)  @@*
Problem was at the slam switch connected to the start switch at the coin door (Refer Pict.)  $#$
Also the diode fitted at the pop bumper coil is for DC Bumpers (Williams 1972 on,Bally 1975 on)
Millsy
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