Hi Theo

I thought about the Fan generating too much noise, but I get the exact same
result with just the light connected. (Removed the Live to the Motor).

So it seems to be something else.
I have checked the 3 main caps with a normal ohm meter, and they seem to be
ok (with the value increasing up to a point, reverse the polarity of the
test leads, and the value again increases to the same point).

I do not have an ESR meter though,
so if somebody thinks it is the caps, then I will go and sub them.

The unit costs about R280.00, ($37US), and in South Africa, it is a lot for
a Pensioner just to fork out to replace the unit.

P
"Theo Markettos" wrote in message
...
Peter K wrote:
The 3 have the problem as follows:
Light Brightness works fine, until you switch the fan on.
once you switch the fan on, it operates at the speed you selected,
but then the receiver stops responding [the piezo buzzer in the receiver
does not even beep to indicate that
it received a valid button press.] , and just holds the same state
(Brightness and Fan Speed).

I wonder whether the fan is generating enough noise to crash the
microcontroller? Perhaps a suppressor has gone, or the power supply drops
out enough to crash it when the fan's running? I'd look at the supply
rails
on a scope to see what happens.

Just a thought...

Theo