Re: Leak Stereo 30 Plus - Setting Quiescent Currents
Reading back-posts as I'm new to this excellent site. I've a couple of S70's of which one of them drew me here- the problem was different but from my early efforts, the IQs were challenging. Those trim-pots can be reversed, so as the less 'flaky' track is used. Just unsolder and rotate. Two of the legs are shorted. I've searched for replacments but no luck to date. This has settled my IQ's, which as you say, drift daily and in some cases, alarmingly- due to high-resistance on 50-year old presets!
As a side issue- I found BC377's for pre-amp trannies a good substitute.
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