Kenwood TS-140S [Archive]

VE1XYZ

02-08-2005, 08:57 PM

I recently purchased a used Kenwood TS-140S that does not transmit. When the radio is keyed the "On Air" light comes on and I can hear a relay click inside the radio but the meter shows "0" output power even when the power is turned up to maximum. The radio receives fine. I was just wondering if anyone has had this problem with this model and if anyone has any idea what the problem could be?

Thanks,
VE1XYZ
http://www.ve1xyz.net

VE1IDX

02-11-2005, 10:51 PM

Does it do that in all Modes? Check the power output control.Those rigs had a problem with the slide pots.Might be a bad relay inside.Could even be the finals but I doubt it.

VE1XYZ

02-12-2005, 07:39 PM

Yes, it does this in all modes and on all bands. I will check the power slide pot and see if it is working properly.
Thanks for the reply
VE1XYZ
http://www.ve1xyz.net

VE1IDX

02-13-2005, 02:28 AM

Some of the TS-140 rigs had a factory problem with the driver transistor not being mounted properly.Usually the problem showed up as intermittant but perhaps it has progressed beyond that. Click here for a fix. # #

Good luck.TS-140 power fix (http://www.mods.dk/view.php?ArticleId=684)

KC9EOG

02-17-2005, 03:41 AM

That happened to mine once and after awhile I discovered that the send/receive button for cw was pushed to send. Hopefully it is something that simple.