I used to be the exclusive North American Distributor
for Gold Products 3 yearts ago I serviced the full line
G2150 thru G3800/15 . Check to see that one of the keys
is not stuck down. If that is not it try a hard reset which requires you to remove the case and short out(connect Together) the two wire jumpers on the component side of the PCB EXample ! unplug machine put ,in reg mode
short two jumpers (a penny works fine) now while still shorting jumpers together Plug ac back in, Printer should cycle printing dots or stars. If this is succesfull
you can log on using default setting ( clerk ID 1 ).
you will have to reprogram unit. If this is not good
the next thing is battery backup (soldered into board)
Lastly if the machine has been setting unplugged for a long period Try plugging it in for 48 hours to try to charge up the battery again.
I hope this is of some help to you GOOD LUCK
cpopyk@hotmail.com, November 2008