well you need to know how its wired in the bell box, doing things randomly is insane!!!!!!!!!!!!!!!!!!
as you clearly have tried random and you can't resolve you need pictures both ends.
If you don't have the means to do the job get what you need so you can.
to test the bell from the panel you can do a bell test, but all that will do is send a signal done the bell core(cable) to the bell, if not connected it wont trigger.
To test it manually, you take the bell wire out of the panel and put it in zero volts.
if you can see the leds on the bell box take a short video of the leds alternating (or not as the case maybe), this will tell me what the bell box is doing.
as you clearly have tried random and you can't resolve you need pictures both ends.
If you don't have the means to do the job get what you need so you can.
to test the bell from the panel you can do a bell test, but all that will do is send a signal done the bell core(cable) to the bell, if not connected it wont trigger.
To test it manually, you take the bell wire out of the panel and put it in zero volts.
if you can see the leds on the bell box take a short video of the leds alternating (or not as the case maybe), this will tell me what the bell box is doing.