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CRM-114 · 16th Sep 2020, 1:30 am

I think Paula nailed it.

This morning, the tuner faulted on first turn on within 30 sec, then I replaced R105, no change. Fail after 3 sec.

Then, instead of waiting for the new transistor, I just removed TR101, as it's only providing the mono signal. Just to test if its leaking as Paula suggested.

The tuner has been playing in stereo for 1/2 an hour as I type this.

This is the first time I've changed something and had a clear and immediate effect.

I'll let it play for the rest of the day and let you know.

Philippe

PS, yes I too thought that the mono output was totally independent. Very counter intuitive

that the only remaining (mono) audio output actually caused the fault, whilst remaining active.

16th Sep 2020, 1:30 am	#23
CRM-114 Triode Join Date: Aug 2020 Location: Adelaide, South Australia, Australia Posts: 10	Re: Quad FM3 no stereo I think Paula nailed it. This morning, the tuner faulted on first turn on within 30 sec, then I replaced R105, no change. Fail after 3 sec. Then, instead of waiting for the new transistor, I just removed TR101, as it's only providing the mono signal. Just to test if its leaking as Paula suggested. The tuner has been playing in stereo for 1/2 an hour as I type this. This is the first time I've changed something and had a clear and immediate effect. I'll let it play for the rest of the day and let you know. Philippe PS, yes I too thought that the mono output was totally independent. Very counter intuitive that the only remaining (mono) audio output actually caused the fault, whilst remaining active.