Hi All

I have a Zaccaria Aerobatics on loan and I've noticed that the feature lights (LEDs) in a couple of areas are always dimly lit. It has LEDs and I've measured around 3V on the lamps that are dim and should be off. I've attached a photo of the problem - in the bonus area at the bottom the middle one (50000) is correctly the lit and the rest (apart from 80000?) are dimly lit. Similarly on the Loop the Loop area (middle left) only the bottom lamp should be lit and the rest (apart from ABCDE insert?) are dim. Other areas such as ABCDE and the lamps around the top hole are ok. Also in game the features increment correctly but the remaining lamps are dim.

I appreciate that LEDs may highlight the problem but I'm pretty sure when I first had the machine it was fine.

Many thanks for any advice to t/shoot this.

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Thanks for the advice, I'm new to EMs and their schematics and cant find the bonus increment lamps at all on the soft copy I have for this game. These were all working ok initially (with LEDs) and since I've only had to move/replace a couple of bulbs and lift the playfield so I've changed something to cause this.

I've found the Loop-the-Loop lamps in the 6V section controlled by their own stepper that cycles them - does this mean they should be out of circuit when the stepper arrow doesn't have them selected?

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I've had the playfield up today and identified the bonus unit and the three other stepper units the game supports. The bonus unit and loop-the-loop stepper are both dimly lighting all their connected lamps at approx 3V and the one selected correctly at 6V AC. The other two stepper controlled banks are lit correctly.

What is confusing me, is per the schematic snippet above for loop-the-loop, the un-selected bulbs I read as being switched out of circuit so how can they be lit at all? I've checked the loop-the-loop stepper closely on the lamp switching side and there are no shorts across the wire contacts as the wiper moves across. If it helps, I've attached a photo circling some of the connected bulbs and the side of the stepper I've been checking.

What I have noticed in common is that the two banks playing up are connected to a common return path vs the banks that are working correctly.

Thanks for any help I think I'm missing something basic.

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