when the ball lands in the top eject hole, the top eject coil pulses continuously and does not stop. if then the ball drains, the next ball is ejected into lane, but top eject does not stop pulsing, and the four drop targets start firing continuously along with the top eject coil.

ive checked switches/relays associated, along with score motor switches associated with top eject relay and top eject coil. Im obviously missing something. any hints would be appreciated. i do have the manual and schematic.

thanks.
-barry.

CrazyLevi i thought you were onto something. i was aware that bundle of wires were sitting on relays. but i moved them to the side, and problem persists

all of the switches, including HOLD, on the Top Eject Relay are correct and filed. there are also three switches on the Score Motor (one on INDEX, and one on cam 4 and 5) associated with top eject. those switches are correct and filed as well.

in further investigation, i see that when the Top Eject Switch is activated, the Top Eject Relay is activated (pulls in). but instead of a single pulse, the Top Eject Relay does not stop pulling in. if i manually disengage Top Eject Relay, the Top Eject Coil stops pulsing.

i also noticed that when Top Eject Switch is activated, the Right Bonus Step Up coil is activated (pulls in) and keeps pulling in as well as the top eject relay. ( i find this strange because i do not see a relationship between the top eject, and bonus step up.)

-barry

Mopar yeah when i manually disengage, its energized. i have to pull on it, it doesnt want to disengage.

also yeah, that makes sense they are related. but still to super clarify, the right bonus step up coil stays engaged, the same as the top eject relay coil. the right bonus is so energized its difficult to manually disengage it.

Mopar http://www.ipdb.org/search.pl?any=grand+prix&search=Search+Database&searchtype=quick#1072

the manual and schematics are downloadable on that page.

Mopar yes thats correct, and also the top eject relay remains energized (which is why top eject keeps pulsing), and if while said things are energized/pulsing the ball drains, next ball is released, and the drop targets coils begin pulsing nonstop along with the top eject coil.

HowardR that swich is filed and correct. Also the switch on cam 4 is filed and correct as well :/

zacaj no I haven't. Would it be relay to score motor, and motor to top eject coil?

I'm also very curious to check the coin door switches mentioned in post 10, once I get home tonight. ..

alright, so this is frustrating and perplexing.

I checked continuity on the hold switch of top eject relay, and the three switches associated with top eject on the score motor (5B, 4D, and Index C). all were correct when open and closed.

I also checked the solder joints on all mentioned switches. they were all okay as well. I did find a stray wire touching another solder connected to a switch on Index D (which is associated with pulsing bonus units). i fixed that but now, while top eject is constantly pulsing, both LEFT AND RIGHT bonus unit Step UP coils pulse constantly as well.

(i should mention too that when i manually engage Left or Right advance relays, BOTH left AND right relays fire at same time, and score motor runs. im fairly certain manually engaging left or right advance relay should just step up associated bonus unit, and not run score motor)

i also checked coin door switches, but they were correct.

i should also say, i have inspected and cleaned EVERY relay in cabinet, and also cleaned and corrected ALL the switches on the score motor. Im very confused.