I am working on a recently acquired Gtb Spirit that needs to be converted to run on 110V. From what I have read and been told, the 2 primary sides of both transformers need to have the jumper wires of their 110V and com tabs switched from series to parallel. This makes sense for the smaller transformer on the lh side of the cabinet, as the 110V and COM tabs were wired in series, but the large transformer on the rh side of the cabinet is wired much differently. On this one the lines coming in to the primary are going to the 100V and 120V tabs, with a jumper going between the other 100V and 120V tabs, and nothing going to the com tabs like the other one has. This transformer is a Gtb #C-19554-3 and is not referenced in the manual anywhere, so I'm not sure why it's like this or if it's safe to wire like the other transformer. I have a domestic HH and BH here to compare, but they both use different transformers that are single sided an don't take jumpers. I'll post a pic in a little bit, but can someone please look at their imported sys 80 and tell me how that rh transformer is supposed to be wired? Thanks!

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Here the other left side transformer just for the heck of it

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Pinballer73, that link doesn't work...

Thanks pin73 and pez, I will look again.

Ok. That tech manual does show both of my 230V Transformers 19554 and 19550, which is a step in the right direction, and verifies that their 115V taps should be wired in series to make 230V. However, my problem is why is my 19554 shown in my first pic not wired that way...

Just looked at pics of 2 other 230V spirits that have the same primary wiring on the large transformer as mine, so i don't think it's something done by mistake or a hack. Can any USA spirit owners show the wiring on the large transformer? Thanks

Bump to the top for Sunday morning. If anyone can look inside their spirit and see how the large transformer is wired on the primary side please let me know. 3 euro games so far don't match the schematic in the manual so not sure how to proceed. Thanks

Thanks pinballer73. So I should not be concerned that the com tabs were not used for the large transformer in the first pic, but were used for the smaller?

Here are pics of both transformers now with 120 windings in parallel, but haven't plugged in yet.

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Cool, thank you very much for your help and looking it over.

I’ve had a couple people contact me recently asking if this voltage conversion wiring worked, so I wanted to resurrect the thread briefly as I never reported back the results.

The final pictures posted above with 2 jumper wires bridging each pair of 120 and com tabs worked fine. Hope that helps future Spirit importers!