Ok on my last post i ask for help in building a pcb
now after going over my schematic there are two ic chips shown on there
part#s are url 747 and url 106005
now these look to be amp chips as this is to make three different bell sounds

now is there someplace to cross reference these numbers to because i really doubt they make them anymore

thanks Bob

Bob, I don't recognize either part number. Could you tell me where the schematic is posted so I can take a look? I might be able to help you after that.

Ron

sent you email with it thanks Bob

ok found someone that has this board with chips on it and the numbers are

7113

and

m380n

thanks Bob