Question about Technics Audio Players & Recorders

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28 yr old Technics SU Z45 amp. Loses/lost right hand channel sound. Speakers fine so must be amp. Dunno if it is the wires connection at the back or something gone inside.Can it be repaired? Thanks. Paul.

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  • Technics Master
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If you have lost the channel on all functions IE:tape, radio, aux etc. Then there's nothing wrong with the back connections. The good thing about stereo amps is that it uses the same parts for one channel as it does for the other. Which in your case means that the left channel can be used for a guide to the right. The first thing to do is look around the amp. Find the two channels parts and compare them, first by looking at them. If you find one burnt and the other good, you have solved it.
As long as you keep away from the power supply parts, you can touch them with an insulated screwdriver. A buzz means it's working and if you work backwards from the speaker section, poking parts with the screwdriver you should be able to find the cause of the problem. Remember use the left channel as a guide to what happens in the right.

Posted on Sep 04, 2010

Testimonial: "Many thanks for the advice!! "

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