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Hi Don, Not sure if there is more than one model.? ? Come on down to the flea and take a look. The one we have is working and in nice shape. Regards, Gene

C-62 in the S-40B is a small cap from the plate of the RF amp to the grid of the converter. In the S-85 there are two such caps, one on each of the low band tuned circuits. All listed as Bakelite

I wonder whether too much coupling (or not enough) might affect the ability to align the stage. I think that you are on the right track. 100 messages? Wow! I can't recall now whether you made the

A sad message to celebrate the 100th message of the thread: I'm starting to fear having to disassemble the ANT and MIX circuits from the chassis: something I would have gladly avoided doing... but I

Don, the dials were (and are) installed as per Service instructions. My sig-gen tests were done to confirm this and to align the OSC tanks. *GUYS, I HAVE INSTALLED C62 in my S-85.* It is a gimmick

Hi jim, RE C4 and C15 both peak nicely (by ear) at 1.4 MHz always good to have a verification After looking at the S40B, we might just have to resort to the gimmick idea, but with the capacitance

Greetings to the Group: I have been following this thread for awhile and I thought I'd add what data I can.?? I have my S-85 apart on the dining room table and I can state the following using my VNA

Thanks Jim, will look into those areas. Tom

Emanuele, Oh, I should not have jumped to conclusions on a gimmick, but just maybe the band switch itself acts as a gimmick. Re the main dial, I meant this Sent: Friday, February 14, 2025 4:23 AM To:

It would be interesting to have someone who has a perfectly working S-85 that aligns correctly on all bands to check for the presence of C62 or an equivalent coupling arrangement. Of course, most

Look at the audio response curve in the manual.? With the BASS switch IN, the low frequency audio is emphasized, not attenuated.?? The BASS switch in the IN position shorts out two components, CH2

Interesting, I'll look into this. Thanks,?Tom

Good idea, but I pulled V12, 6SC7, and the hum remains. It is definitely in the output stagesTom

Don, I didn't see any gimmick arrangement in my S-85. I can confirm once again C62 is not installed in my S-85 neither as a discrete component nor a a gimmick arrangement. the main tuning dial seems

Check whether the windings of the audio output transformer are really symmetrical. This is how the two anodes of the 6v6 are fed and the remaining hum in the end circuit is eliminated. The hum is

Maynard I think Emanuele alluded to the idea that he saw a gimmick across the wafer so that must be the replacement for the C62 in the S-40B. It can be hard to identify a gimmick, all depending on its

Don, I think that idea has merit. I have problems with the idea that the S-85 is intended to have nothing where C62 is located in the S-40B because everything else looks the same on the schematics, I

Tom Good for you Presumably, the base "In" position filters out the hum as expected. And the hum comes from upstream, maybe the AF gain? Pot area or a bad contact in the phones switch, or even before

Maynard, for C62 just remove the part no, the Bakelite, and the voltage, or chop the Cap out, leaving the short leads close together et voila.. 2 pF.. makes the bean counters happy. And frustrates US

I should clarify, Whether the bass is in or out, the ripple remains at the same amplitude. I just don't hear it with the bass "in" Tom W3TA From: [email protected]