hi Vince man.. I really need Maine bad for my 75M AM WAS. Wonder if we could arrange a sked?
Ronnie On Mon, 29 Dec 2003 21:00:55 +0000, Vince Wesa Werber wrote > Hi OM... > > When I did my last SX-28 I found a heating prblem in the audio > also... not outside of the norn really. be sure to check the bias > on those audio tubes... and the impedance of that replacement audio tranny... > > My last one had a replaced power tranny and all the voltages were off... > > Re-cap the machine... bypasses etc... and check all those screen > resistors... awww heck... check all the components... it is rather > old enit??? :-) > > these are fun radios and well worth the time... > 73 > vince > ka1iic > > On Monday 29 December 2003 04:34 pm, w5sum wrote: > > Morning All > > > > well I have dived headlong into my SX-28 restoration. The first order of > > business was to try to get the wiring correct in the audio output stage. It > > had a replacement audio output transformer, and the wiring to the headphone > > jack was all wrong... end result was that there was NO audio available at > > the speaker jacks on back and bad audio with headphones. > > > > I had a parts unit here so I took the audio transformer out of it,and put > > it in the one I'm restoring. I wired the headphone jack up correctly, and > > the speaker jacks on back. I now have decent audio from the speaker > > terminals with the factory speaker, and so so audio using a 8ohm headset at > > the headphone jack. > > > > HOWEVER, the 6L6's ( someone subbed out the 6V6's ) run scalding hot.. I > > mean.. so hot you can smell them. I have changed EVERY component in the > > audio section around the output tubes, and the 6SC7. > > > > Anyone have any solutions to why these tubes are getting so hot? > > > > thanks in advance > > > > > > r > > > > The "AM" voice of Shreveport, Louisiana USA > > formerly WN5AIA and WB5AIA > > I got my Extra Class the old fashioned way... I earned it! > > _______________________________________________ > > AMRadio mailing list > > [email protected] > > http://mailman.qth.net/mailman/listinfo/amradio > > _______________________________________________ > AMRadio mailing list > [email protected] > http://mailman.qth.net/mailman/listinfo/amradio The "AM" voice of Shreveport, Louisiana USA formerly WN5AIA and WB5AIA I got my Extra Class the old fashioned way... I earned it!
