I might add, while being very careful to not bump the little pots just behind and to the right of the VFO on the power supply board.
--- On Tue, 3/23/10, Jim Shorney <[email protected]> wrote: > From: Jim Shorney <[email protected]> > Subject: Re: [Drakelist] Loss of audio - fixed by flipping mode switch - > sometimes > To: "[email protected]" <[email protected]> > Date: Tuesday, March 23, 2010, 8:47 PM > On Tue, 23 Mar 2010 19:32:26 -0500, > G.P. Blount wrote: > > >Greetings and thanks for the list! > > > >I recently acquired a very nice TR-7 which is > exhibiting some anomalous behavior. > > > >I left the TR-7 turned on for a couple of days (tuned > to WWV) after I got it. When I came into the shack several > days later, I could not hear anything. I turned the AF all > the way up and could just barely hear the audio. I flipped > the MODE switch from AM to USB and the audio came back on > instantly. > > > I worked on one not long ago that had similar symptoms. The > cause was > determined to be oxidized Molex pins. There is a LOT on > this subject on the > list archives, but in a nutshell, the first troubleshooting > step for just about > any TR-7 problem is to re-seat all the circuit boards. > > 73 > > -Jim > -- > 3/21/2010 > "So this is how liberty dies... with thunderous applause." > > (Padmé Amidala, "Revenge of the Sith") > > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist > _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
