Hello guys & gals, I have some odd-ball issues with my Spectrum pinball machine and I’m really hoping to get some help and gain some knowledge as well. I’m very new to the pinball life, well the technical side of things, so I don’t know exactly how to formulate the proper questions to address my pinball problems in an efficient way; hopefully this info isn’t too overwhelming. Thank you in advance.

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--Issues--
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-Bottom Drain Saucer (below both flippers) - When the ball drains, it kicks it back out and the player’s turn continues like nothing happened. It's continuous no matter how many times it drains or how long it’s been. The only possible way to end the turn is with a tilt.

-Left Lower Saucer (Reservoir Ball) - Does not work at all, ball does not release.

-Right Lower Saucer (Reservoir Ball) - Partially working. Somewhat frequently the saucer kicks out the ball right after the other active ball, when it should stay in the reservoir hole; both balls are in play. I do understand that a “multiball” play can occur with this machine, but this is much too frequent for it to be normal.

-Left Mid Saucer (Clue) - Does not work at all.

-Right Mid Saucer (Clue) - Perfectly working as it should.

-Top Saucer (Clue) - Partially functional, only kicks out to the left side. Left Kicker works perfectly / Right Kicker does not work at all.

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--Attempted Solutions--
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-Self-test Mode: everything works perfectly and functions as it should.

-Tested the 1N4148 diodes on the saucer leaf switches, and they all tested good.

-Checked all the saucer leaf switch positions, all are in open position and will make contact when the ball pushes down on the small button.

*It is worth noting during testing, when I push on the Right Mid Saucer (Clue) leaf switch, sometimes it activates the Left Mid Saucer (Clue); approx 1 out of 8 times, random though.

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--Additional Info--
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-Brand new Alltek Boards; MPU, Solenoid Driver, Lamp Drivers. Also brand new Power Module Board as well.

Spectrum Playfield (resized).png

I definitely have a newfound respect for the technical side of the pinball community, holy smokes! This is the first pinball machine I’ve owned, and the first time ever being able to look under the hood of a machine in person, so it’s all very new & fascinating for me, but also very intimidating with the lack of knowledge. So thank you all for your input with troubleshooting information; what a great forum!

Previously I was using the Self-Test button on the machine and only looked & listened for the solenoids to activate/deactivate; I would consider it more of a general observation. Now I just used the Alltek MPU Test Card and was able to pinpoint a handful of individual solenoids that registered with short circuits on the Solenoid Driver Board diagnostics; what a great tool! I'm embarrassed that I didn't use it prior to this..
Anyways as for now, it seems that the problems have been pinpointed and I will start researching how to troubleshoot these short-circuits. Thank you all for guiding me in the right direction, very much appreciated!

Yes absolutely, it may take a little while, but I do plan on posting a follow-up with details after doing some more troubleshooting. Trials & errors, and hopefully some solid solutions.