AMI F-80

[em pinball]

I have an F-80 jukebox that i think may have been refurbished years
ago. it looks and plays great. my question is on the volume control.
it seems that when i turn the volume control knob down in back it
doesnt take the volume down low enough. it will definetly blow you
away when you turn it up. do i have to replace the volume contol box
or is there an adjustmet on the amplifier somewhere to adjust it.
thanks for ayhelp. norm

[kreed]

Some of these earlier volume controls used unconventional methods
compared to today

Usually there are 2 wires to the pot. (at least there is in the G-80,
I haven't seen the amp from an F but it might be similar ??? )

Based on how the pot is set up either short them together or
disconnect one, and see if it is possible to silence the volume
completely. Unsoldering one wire is recommended so as the pot is not
involved in this test. From memory the vol control for the G reduced
volume by progressively shorting the signal via the pot to ground.

if this is the case, you may have a faulty or wrong value pot
installed, but my feelings tells me it is something in the amplifier
that is causing this. It may also be designed this way.

ie: In cases of more modern jukes, it seemed normal with some
operators to put a resistor across the volume control in order to
prevent the volume going completely to zero.

This avoided service calls that "there is no sound" whereas if there
is really low volume, the location is more likely to try turning it up
rather than ringing.