I have a mid aged (rca/phono sockets but earlier Quad logo) Quad 34 pre-amp. Over night the left hand output disappeared, cranking the volume up high I get a little noise probably crosstalk but that is all. As far as I'm aware it's all original, so probably due a re-cap of the electrolytics anyway. Is the channel out likely to be the CMOS switches gone? Or are there other common issues with these. Other than the output everything else is fine, channel switching, tilt and bass controls etc all behave perfectly.
Any advice before I pull the casing off?
Any advice before I pull the casing off?