Laser Ball
Williams, 1979I have searched the forum on how to correctly test an transformer. What I do know is that you can not use earth ground for testing.
What I don't know is what lugs to touch to get the correct voltage read out. Would someone care to dumb this down in a step by step procedure? I'm sure that my transformer is in working order, but I cant get myself to move on with other repairs until I can "check" this off on my "it's working" list.
Thanks for any help
Different games by different mfgrs use various configurations. Consider listing your specific game so others can provide you a quick list of values to look for.
Is this for your 79 WMS Laser Ball? I'd start by looking at the manual (page 35, shown below) to see what lugs, wiring and voltages to expect.
6T1 is your transformer.
Lugs 1-8 are the input side.
Lugs 9-19 are the output side.
The wire colors are shown. Hopefully your transformer's labeling of the lugs is legible.
I'd also verify that your wiring at the 6P1/6J1 plug is appropriate for your game.
You will be measuring AC voltages across lug pairs and comparing them to the values shown in the figure.
Sorry it took me a bit to get back to work on the machine.
I tagged the post with with my game type, didn't know Í had to do it all the time.
jeffc, Thanks for your post. It was very helpful. And thank you guys for chiming in.
Took me a bit to figure out the pin out of the connecting plugs (6P1/6J1) to the transformer (6T1), but it is correct. Once I understood the naming, the jumper configuration, and how to measure the lugs correctly, I was able to see or understand the drawing.
It seems that the transformer is good from the numbers!
In Lugs:
1&2 109.6v
3&4 13.68v
5&6 109.2v
7&8 13.67v
Out Lugs:
11&12 15.94v
13&14 30.27v
15&18 9.86v
16&18 9.86v
17&19 7.55v
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Houston, TX