I recently picked up a AMI/ROWE Grandstar internet jukebox that is setup for 110V operation. There is a voltage selector jumper on the main powersupply module to allow 240V operation. Looking at the manual...

https://www.amientertainment.com/wp-content/uploads/2014/03/Grandstar-Manual-CJE.pdf

...it does not mention what the jumper settings are for 240V operation. Looking at page 7-11 (pg73), Figure 7-1 and the previous page, it appears as though I need to remove the existing jumper wiring and install a jumper between pins 3 & 4 at the 4 pin mains supply selector. Has anyone else converted one of these jukeboxes to run on 240V?

Doing as described above, puts the 2 circuit breakers in series with the primary transformer windings, one cb before each winding. I would have to remove one and possibly replace the other with a different rating cb. What do you think? Any help would be greatly appreciated.