[Kenwood] TS-430S

Mon Jul 12 14:51:50 EDT 2004

Shotgun techniques:
Reseat the plug(s) that connect wires from the front panel RIT/XIT switches and controls to the controller board. Look for rosin on any switch board and/or the controller pc board. If boards are coated with rosin, remove with denatured alcohol, a paper towel and toothbrush.
I recently corrected an intermittent frequency instability in a Heath SB-1400. The solder side of the board was clean, but a droplet of rosin was found on the component side between two leads of a transistor in a crystal oscillator circuit. I removed the transistor, cleaned the board and the transistor, put the transistor back in, and the set is now stable.
73 de Bill, AB6MT
billsmith at ispwest.com
 ----- Original Message ----- 
 From: Bob Wilder 
 To: kenwood at mailman.qth.net 
 Sent: Monday, July 12, 2004 7:45 AM
 Subject: [Kenwood] TS-430S
 Hi all. This morning when I started this rig, the dial read exact frequency of a 7 MHz MARS net I was to be NCS of. Started to call the net and got no response. Turned rig off and back on and found the net right where it was supposed to be. Seems the Oscillator jumped about 12 Kc down both on transmit and receive. Any suggestions. This is the second time in about 6 months that this has happened.
 TIA
 73
 Bob Wilder
 6032 Idlemoore Court
 Theodore, AL 36582-4117
 251-653-5274
 http://home.earthlink.net/~bwild
 Asst USAF State MARS Director- Alabama
 AF2HD/AFA2HD
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