Some advice please

I bought a used/dead one to add a second unit to the house for my wife (originally just for the faceplate, since mine got pretty scratched up in a move, but decided to fix it), and first it had a down multiolex stage (sorted cap) and then would not release muting (yet another shorted cap), so while I specifically debugged the two problems down to specifuc parts, I also did a pretty complete recall of electrolytics.

Other than better parts, no upgrades - I never found it to be lacking to begin with. (Oh, and just a TX-11, not an a or b).

No alignment at this time - seems stable, and not changing anything in the RF section (nomelectrolytics there anyhow) so as to not effect tuning. Not sure my FM stereo generator outputs what they are looking for (and need to make sure it is working as well - not been used in quite a few years).
 
Kma4444 said:
Thank You everyone for the advice and conversation. Eric is working with me to get a couple of them all White Oak'd. Very much looking forward to getting them back in service. I will make sure and post up pics as they come along.

Thank You Again
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Eric usually posts progress pics so we’ll all see what’s happening and why.
 
J!m said:
Eric usually posts progress pics so we’ll all see what’s happening and why.
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I’m just assembling the PCB’s on this project.

Kevin plans to assemble everything else and has an interesting new twist for the final look on his 700B.

Should be an interesting build to follow. Always great to have new ideas from people on this forum.
 
TimD said:
my FM stereo generator outputs what they are looking for (and need to make sure it is working as well - not been used in quite a few years).
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Right! I have a Leader LSG-231 FM Stereo Signal Generator and I am not sure if it needs any attention prior to attempting a tuner alignment. My oscilloscope is a Tektronix 2235 (100 MHz) and i think it is up to the task.
 
Yeah, I have both a 200MHz scope and a 2GHz spectrum analyzer, so good there. My FM generator is a Heathkit we build in the 70's . . . should still work, but need to verify. The Carver manual asks for R-L phase test signal, and I think the gen only does R+L . . . I need to dig into the docs to verify.

In any case, listen tested the "project" TX11, and it sounds fantastic, so likely going to leave it as-is. Not too man "drifty" parts in the RF/IF stages.
 
TimD said:
The Carver manual asks for R-L phase test signal,
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Good to know, my Leader LSG-231 manual says it outputs a composite signal of L-R, L+R, L, and R at 1 kHz. I wish I had a spectrum analyzer. But then there would be a whole new steep learning curve.

I just downloaded and printed the Service Manual. Time for some studious reading.
 
You are lucky in that regard . . . . the -11a service manual out there is a lot better than that for just the -11. (The -11 manual still shows to be a prelim and has some vague/undpcumented areas, and some part numbers/values that are reversed compared to the schematic . . . )

Note that the part numbers hundreds digit is per functional area, which helps determining what a component is a part of . . .
 
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