Gottlieb A4277 Transformer

[RichS]

Hi all

I have a really silly question that I cant seem to get a sensible answer for. I am working on a friends Tropic Isle she tells me that it has been in a damp garage for years. Every relay score reels and selectror unit is corroded and seized so I have a lot of mechanical work ahead of me. I am trying to determine the input voltage of the thing before I attempt to power it up the transformer says Gottlieb A4277 on it and I suspect it is 110Volts I only hope and pray it has not been powered up. Can anyone please confirm what the input voltage to this transformer is

Thank you in advance. Richard.

 

[AlanJ]

On those early games the transformer wasnt a multi tap input like later games where you could switch between 115v and 220/240v. So if its USA model will be 115v and if it's been made for UK/Europe market, it should be 220v

I would disconnect the outputs from the transformer to the rest of the game and plug it in, then measure the 2 AC outputs. One should be 6v for the lamps and the other will be 25v for the coils. If you measure those voltages its all good and is a 230v transformer, but if you measure 12v and 50v then it's a USA model.

 

[DAD]

This is the transformer on my Gottlieb Square Head (a year younger than Tropic Isle).

I believe the A4277 is a 110 v transformer, but if the game has been operated in the UK or Europe it may also have an aftermarket step down transformer fitted.

If it does have a 110v transformer, it likely also has a 60hz motor, which you'll need to swap for a 50HZ one if it is going to run at its intended operating speed for counters

 

[RichS]

This is the transformer on my Gottlieb Square Head (a year younger than Tropic Isle).

I believe the A4277 is a 110 v transformer, but if the game has been operated in the UK or Europe it may also have an aftermarket step down transformer fitted.

If it does have a 110v transformer, it likely also has a 60hz motor, which you'll need to swap for a 50HZ one if it is going to run at its intended operating speed for counters

Thank you