"Bob Parker" wrote in message
...
G'day,
I've been asked to help fix a Sharp CRMC-A310JBEO remote control
for an air conditioner. All that seems to be wrong is that it's been
dropped and the ceramic resonator's broken into tiny bits, making it
impossible to see what frequency was marked on it.
If someone can tell me what the resonator frequency is, I'll be
massively grateful!

Regards,
Bob

I would grab some salvaged resonators and try each in turn
300,400,455 and 500 would be the most common used.

Or try a medium frequency generator of a few volts pk-pk
fed into the resonator pads and see what effect on receiver with
different f settings

Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse