Galaxy 2-20 does not trigger when bellbox cover taken off

[Flanders]

You will find that the strobe will only flash for as long as the bell rings as they are connected to the same terminal in the panel (20mins as i remember it) . The reason the strobe has it own circuit is so it continues flasing after the bell as stoped

 

[telectrix]

the fault on the bell PCB is most likely a dry joint, probably under the terminal block due to it may have been over tightened some time and thus cracked the solder.