[Kenwood] TS940 Pwr Supply Fan info
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2003年12月19日 22:58:49 -0800 (PST)
Mike,
Can you disconnect the fan and connect to a bench variable power supply.
Years ago when I had a 940 my fan was slow as well. It turned out that
it needed a few drops of oil on the bearings (not easy to get to). Maybe
it is the same situation??
Good luck.
Happy hollydays.
Mort, KB6BSN
> Just bought a nice clean 940 (10 mil s/n) and noticed it runs a little hot
> on the power supply side. Inspection revealed that the fan was barely
> turning. The fan checks good with a 12 volt bench supply. I have approx
> 18.8 volts on one side of the thermistor. When I jumper the thermistor, I
> can see approx 2 volts on the high side of the fan and it's turning, but
> not
> enough to move air. I also get the same results by putting my solder iron
> close to the thermistor while it's in the circuit. Sure would appreciate
> some help if anyone has been down this road.
>> 73
> Mike
> K5UX
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