Hello,
Long time reader, first time poster! I just picked up a Gottlieb Magnotron at auction. My first EM machine after 5 SS machines.
I'm having all sorts of issues, ranging from the "0" contacts on the decagon score reels not operating like I want (and need!) them to, to buzzing flipper and bank reset coils, to the player motor not ratcheting properly all the time, to not advancing to the next ball when the ball enters the drain.
For the score reels, I'm just going to try and buy new contacts. I think they have been bent so many times over the years that the metal has lost it's ability to spring a little. Is this about right?
For the buzzing coils, I've put new sleeves and slugs in and replaced the shafts, but that really hasn't helped so I'm just going to replace the coils. There isn't much apart from sleeves and slugs is there?
The player motor...I think I may just have to play with spring tensions. Should the contacts on the back be lubricated? Any special type of electrical lube you know of?
I think I've figured out why when the ball drains without touching any of the bonus roll overs, it doesn't advance to the next ball. If you score a bonus, the ball is held in the drain until the bonus score has been added, then the kicks the ball to the ramp, the "P" switch closes , then through Motor 1C and the "P" switch, it advances the ball count. However if the ball drains without a bonus, it kicks the ball out straight away and the "P" switch closes before the score motor has stopped turning. If I manually close the "P" switch, the ball count advances and onwards we go.
I wondered if the score motor was turning too slowly, could it be binding in the bearing? So I've taken the score motor apart and noticed the part number of B-7760. Searching online it appears its a 60Hz Motor? If so, that would explains a few things as I'm in Australia, and we are 50hz. Does anyone have a part number for the 50Hz motor, or have one that they are willing to swap for a working 60Hz motor? I'd cover all expenses for that.