Author Topic: Stern Galaxy solonoids not quite right  (Read 1045 times)

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Offline deep six

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Re: Stern Galaxy solonoids not quite right
« on: June 25, 2011, 04:55:41 PM »
Thanks Nino
Still tossing up whether to buy a new board or try and fix mine. (or both).
Just realised a lot of the wires which are supposed to be contained within a plug are soldered directly to the pins. Probably just a matter of buying some new plugs and fitting new female ends I guess.
one other thing I haven't been able to work out is how do you know what type of components to buy to replace the originals, I have searched for some sort of list but so far it escapes me, looked at the schematic that came with the machine but its not very enlightening, checked different posts of rebuilding this item but these seem to concentrate on fixes and fitting higher rated bits but can't see exactly what I should be getting.
I just fired Galaxy back up, looked at the fuses again, checked the fuse under the playfield and it looked to be dead, noted beside this fuse says only use 1 amp slo blow, I noted the fuse fitted was not slo blow. I turned the machine off. Found a 3/4 amp slo blow in my box of fuses and fitted that.
Powered it back up and noted a clunk as though some of the solonoids were resetting, however the machine hung at this point so I decided to take the fuse back out.
Took a few more attempts to make it boot up again. Tried wiggling some of the connectors on the rectifier board, remove and replace fuses, stand on one leg, that sort of thing.
Finally got it to boot up and go through self test.
I had been trying to work out what the thingys on the top of the rectifier board were that are labled "TP" then it came to me that somewhere I had seen mentioned "test Point". See, it does pay to study.
Got out the trusty multi meter and powered up the machine, couldn't decide where to put the black probe of the multi meter so ended up holding it on one of the bolts that secure the bridge.
Tested all points, here is what I got:
TP1- 5.7v
TP2 220v
TP3 12.81v
TP4 nothing....
TP5 44.4 v

Not quite sure what is going on with TP4, couldn't figure out if the test points were directly in line from the transformer or at a point after the fuses, figured the later is probably true as I got a reading of 22.3v from the bottom clip of the fuse holder which I'm assuming is the hot side.

Anyway, I think I am progressing, so far I have checked the test points, wiggled lots of wires, impressed my friends or anyone who would listen with my knowledge of pinball macines, and managed not to electrocute myself.
 
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