In one of our buildings we have a Simplex 5120 paging/bell/clock system. After an electrical storm there was a full time "wop, wop, wop" sound through the speakers. The Simplex tech diagnosed a problem with one of the boards--blown diode. The prices he quoted seem to be outrageous. I've been looking for replacement boards on the Internet with no luck. Does anyone here know of any suppliers I should check with?
Thanks,
Terry

Will the technician tell you which diode? Replace it, would be my advice. Diodes are less than a buck. If your hourly rate is less than "outrageous" then replace it yourself.

Why would a tech diagnose a problem down to a diode and then not replace it? As Arthur said diodes are cheap if you know how or have a tech that can replace it then you could save $$$ otherwise you need to replace the board. If the system is very old you maybe able to find used parts but I have no idea where.

It's Simplex...they are going to charge as much as they can because the board says SIMPLEX on it.

I did a search for Simplex repairs and found THIS.
They may be able to help find the board you need.

Simplex purchases most of their PA systems from Valcom, if that helps.

Thanks guys. Your help is appreciated.