[Jukebox-list] A Wurly 2510 amp question

[kegmaster]

I have a 2510 (mono)that came into the shop today with the complaint that there is no sound. The lady said that it the jukebox worked great for years and suddenly quit having sound. Probably needs a rebuild, but then she also stated that she changed out the cartridge/needle. I asked if the sound problem started before or after she changed out the cartridge and she could not remember for sure, but thought that was the reason she had the cartridge changed. What would be the best way to rule out the new cartridge as the problem. I'd hate to send out the amp for the rebuild only to find that the problem was in the cartridge...