>From what I can tell the 6AQ5A is the audio output tube if I am reading the >list correctly in the manual.
Bob AD5VJ > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of AD5VJ Bob > Sent: Sunday, November 22, 2009 10:21 AM > To: [email protected]; [email protected] > Subject: Re: [Drakelist] Troubleshooting guide? > > Hi Gary > > Thanks, I appreciate that as I just downloaded a R4 manual > last night hoping they might be similar. > > I just noticed after taking all of the tubes out cleaning > them off and replacing them, I now have filament voltages on > all the tubes and they are all lighting up. > > But, now I have no audio through the speaker and the S meter > stays at the right. Perhaps take them all out again and clean > the sockets with contact cleaner. > > Bob AD5VJ > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Garey Barrell > > Sent: Sunday, November 22, 2009 9:57 AM > > To: [email protected] > > Subject: Re: [Drakelist] Troubleshooting guide? > > > > Bob - > > > > I know it's a radical idea, but start with the MANUAL! :-) > > > > Drake left a lot out of the manual, (see my CDs, :-) ,) but > the Theory > > of Operation section is pretty good in most. The early > TR-4 is very > > similar to the TR-3, so that manual would help, and > web-based info on > > the TR-4 as well. > > > > The information at > > <http://www.dproducts.be/drake_museum/how_to_fix_.htm> is very > > helpful, although it "may" require some translation of specific > > component id's. > > > > Another good resource is > > <http://www.dproducts.be/drake_museum/DrakeMods2005.pdf> > for general > > Drake information. > > > > Lastly, this reflector is a terrific source of information and > > expertise! Just ask.... > > > > 73, Garey - K4OAH > > Glen Allen, VA > > > > Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs > <www.k4oah.com> > > > > > > AD5VJ Bob wrote: > > > I am trying to troubleshoot a TR3 that I was recently > given and am > > > trying to restore. I have never done this before and as a > > result have been googling everything I can find on the Drake line. > > > > > > I have found many good websites, but they all seem to focus > > more on the TR4 and TR7 series of rigs. > > > > > > Does anyone have or can put together for me from your > > experiences in > > > working with the TR3 a troubleshooting guide? A sort of > > 1-10 type thing to go through. > > > > > > Right now the rig (I have tried the power supply on > another rig and > > > know it works) will not power up except the OA2 does light > > up which I understand it normal, so that is a sign of life at least. > > > > > > But now what do I check next?? > > > > > > Bob AD5VJ > > > > > > > > > > > > > _______________________________________________ > > Drakelist mailing list > > [email protected] > > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist > _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
