[Kenwood] Kenwood TS930 Power Supply Fan not turning on

[Fortra]

Hi Gale,

this is what i have done on all of my Kenwoods..
Put an small additional fan ( i guess CPU fan) on back of TS-850S, TS-870S.
On my TS-930S i have used an three terminal regulator for constantly feeding
8,0 V dc to the original fan . Ir runs really "cool" ever since :)

Nermin S58DX


----- Original Message ----- 
From: "GALE STEWARD" <k3nd at yahoo.com>
To: "Terry Clinard" <tclinard at hotmail.com>; <kenwood at mailman.qth.net>
Sent: Thursday, May 23, 2013 5:38 PM
Subject: Re: [Kenwood] Kenwood TS930 Power Supply Fan not turning on


I had the same issue with one of my TS-850S radios. I modified both of mine 
to have the fan run continuously. I installed an 8.0V, three terminal 
regulator to run the fan on 8V. Nice and quiet and the radio stays cool, 
even over an entire DX contest weekend.

73, Stew K3ND





________________________________
 From: Terry Clinard <tclinard at hotmail.com>
To: "kenwood at mailman.qth.net" <kenwood at mailman.qth.net>
Sent: Thursday, May 23, 2013 10:22 AM
Subject: [Kenwood] Kenwood TS930 Power Supply Fan not turning on


My TS930 power supply motor does not turn on. After about 45 minutes 
operating SSB at 100 watts, I cannot touch the rear corner of the cabinet at 
the power supply area, because it is to hot.

Is there a mod out there to fix the drive circuit or thermistor? OR The 
schematic says the TS930 fan motor supply voltage is 10.3VDC. Was thinking 
to disconnect the motor from the TS930 circuit and running a 9VDC "wall 
wart" to the motor that would allow me to turn the fan on separately when 
needed. Any thought form all you good folks?

Terry Clinard WA8OPR

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