Volley
Gottlieb, 1976You're currently viewing posts by Pinsider DaMoib.
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Does the "U" shaped jumper on the back of the AX switch stack look intact - all four switches are connected to the RED-BLK wire? All other solder tabs have good spacing and there is no shorting?
Also, if you block the 10's unit runout switch with a piece of paper, the 10's coil does not actuate at all during reset? How about if you block the AX switch for the 10's reel (the one with the GR+RED wire)?
IMG_2165 (resized).jpegRegarding problem 2 - re-gap those trough switches, they're located right over the chime unit... maybe the vibration from the chime solenoid banging away is causing the trough switch(es) to close.
Quoted from wawhite92025:The gaps in the two trough switches are good. When the ball rolls over the wire it closes both switches, but there is no way the chimes solenoids could close those switches, plus there is no chime when the ball is rolling from the kickout to the shooter lane. But interesting suggestion. Thanks.
On issue 2:
If the high current trough switch is gapped too closely and closes due to vibration (or there is a short) WHEN the score motor is turning (i.e. when scoring 500 points), the ball count will advance.
One quick test (with the playfield down and glass off) - after the ball has kicked into the shooter lane, block the high current trough switch with a piece of paper. Drop a target by hand, does the ball advance during the scoring of the 500 pts?
Also try it with the trough switch unblocked and the 100 point chime solenoid lead disconnected. Drop a target, does ball count advance?
One last test - with the trough switch unblocked and the 100 point chime solenoid lead disconnected. Drop a target and, while the 500 points are scoring, pound on the top side of the playfield near the apron where the trough switch is located... does the ball count advance?
It is important to do these tests with the playfield down - the forces on the trough switch are different and, if something is marginal, the issue may only happen in this position.
VolleyAddBallCount (resized).jpgSorry, my mistake, a noisy trough switch will advance the ball count unit when the score motor is *stationary*. Both those motor switches are NC switches.
Just pound on the playfield after the game starts, no blocking switches, no dropping targets, no disconnecting chimes. Does the ball unit advance?
Quoted from currieddog:Does scoring 500 cause a 5 ball advance?
I think both problems have short written all over them.
Yeah, I'm slowly coming around to that conclusion also (much to Will's frustration, I'm sure). I missed this in his original issue 2 problem statement - "To add to this situation, when the trough switches close the 100 point relay is activated and the 100 reel advances one step. So this issue with the 100 points and the ball count unit is a two-way street."
Might it help to understand which of the two trough switches scores the points?
Paul,
That's because Volley is on the rotisserie and I JUST took them all apart and cleaned them this week! Bought myself a nice set of dental picks for the job...
Great!
The wire bundles from the playfield to the head and motor board flex differently, depending on playfield position. With the playfield up, can you flex the cables manually and see if the 100 pt/ball count problem comes back?
While we ponder gravity and all its implications... do you have a 24 volt test lamp to help debug the 10's reset issue?
The idea being the RED-BLK wire should be pulsing at the Motor 1A rate (because the other reels are resetting), BUT either the GR+RED and/or the GR-RED are stuck on and locking up the coil. We could also try it with a multimeter if you don’t have a test lamp…
https://pinside.com/pinball/forum/topic/reading-gottlieb-schematics#post-2634425
and then I went whole hog:
https://pinside.com/pinball/forum/topic/show-and-tell-your-diy-homemade-tools/page/12#post-5492636
Amazon 24V bulbs with mini bayonet:
https://www.amazon.com/gp/product/B00LQON2WM/ref=ppx_od_dt_b_asin_title_s00
Quoted from wawhite92025:...
If the wiring is identical on other Volleys I wonder if any others had this problem, or maybe the person that assembled this game made this wiring job one-of-a-kind ha ha. I'm going to tell Wayne Neyens about this: he will find it interesting how this mysterious problem was solved....
Will
I wonder if it IS a mistake by the assembly team - my cable clamp uses the dimple above and to the left as seen on your playfield... maybe you had a Monday morning (or Friday afternoon) dimple driller 
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