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I check in here , but - some people think I harass, this site everyday...

But I find discussing something I enjoy as a hobby, is far better than to discuss other things not pertinent to radio or communications in general.

I do find at times that posts of mine "disappear" for unknown reasons but then this is why I check in - to stay active and to also review my various approaches to posting methods to help answer questions effectively yet thoroughly to help the next one that may stumble into the thread looking for other answers to a similar symptom or problem.

Back to the issue of the "Peep" - there are two small value caps that are supposed to generate a burst - it's a design similar to a relaxation oscillator with a strong feedback loop (the 270K resistor for example) to provide linearity and some analog effect to the peep else it will act more like a "one shot" pulse maker than an oscillator.

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So the biggest cuprits are those Electrolytic's, but as your finding - solder "shards" and other wild errors you don't normally see.

But then too, parts are older in the unit so if the radio seems to work for the pause, but no burst of tone, suspect then either TR33 or the oscillator portion itself.

Good luck!