wxforecaster
Member
I inherited a Whirlwind project with a multitude of problems (enough electrical tape to bound a small child). I'm certainly not a skilled person by any means, but I've repaired everything on the machine from spliced wiring to burnt connectors and so on.
I'm "stuck" with one last issue - a pesky right sling shot that fires as soon as you turn on the game.
When I pull the J7 connector from the driver board and the coil stops...so that's a good sign.
I tested U45 and all the pins (non-power/ground) are correctly between .4 and .6V. Other solenoids driven by U45 are also working correctly. So, before I go ahead and replace Q69 and Q68 transistors, I did happen to notice that the wiring to the coil lugs is reversed from another game I had. The problem child slingshot has the thick purple wires on the left lug and the blue/yellow thin wire on the right lug. My working example has these flipped.
I can't see *why* this would matter on such a 2 lug coil with no diodes, but I figured I'd ask first. I also noticed that the coil that's in there is a AE-26-1200 as opposed to the original AE-26-1500. Again, I don't think there's a problem here, but I'll let the experts chime in.
Thanks in advance,
Evan
I'm "stuck" with one last issue - a pesky right sling shot that fires as soon as you turn on the game.
When I pull the J7 connector from the driver board and the coil stops...so that's a good sign.
I tested U45 and all the pins (non-power/ground) are correctly between .4 and .6V. Other solenoids driven by U45 are also working correctly. So, before I go ahead and replace Q69 and Q68 transistors, I did happen to notice that the wiring to the coil lugs is reversed from another game I had. The problem child slingshot has the thick purple wires on the left lug and the blue/yellow thin wire on the right lug. My working example has these flipped.
I can't see *why* this would matter on such a 2 lug coil with no diodes, but I figured I'd ask first. I also noticed that the coil that's in there is a AE-26-1200 as opposed to the original AE-26-1500. Again, I don't think there's a problem here, but I'll let the experts chime in.
Thanks in advance,
Evan
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