[Kenwood] TS-940SAT fan help

Mon Nov 6 16:43:43 EST 2006

I have a very noisey fan on the power supply heat sink.
I have looked for it and put a couple ads out and no luck finding one.
I thought I could ad a 2.5 inch 12v dc fan on the back. I founf one and 
got it hooked up to find
when the thermal switch kicks in the is 18.3 Vdc. The 12V I have does 
not like that and will not operate.
It does fine on 12V. First, does anybody have a fan froma parted out 940 
and second
how can I get that 18 V down to when this fan will go for it.
Thanks
Joe
KI4TZ