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Technics su z2

Right hand channel sound is low and distorted. Is it repairable and would it be worth it?

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  • 91 Answers

HI
2 things can do this
1.input selector is dirty and needs to be cleaned.
2.the power module is damaged.
Hope this helps

Posted on Jan 02, 2016

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Posted on Jan 02, 2017

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SOURCE: no sound on right channel

Hi,

Take a look if your outputrelay is switching on.
If so, then measure if the signals coming thrue.
Offcourse only if you are sure that there is a signal present.

Regards,
Gerard

Posted on Jan 18, 2010

technical114
  • 1851 Answers

SOURCE: I have a 3020i and one channel is very distorted

Unplug the power, open the case and try to locate some electrolytic capasitors is series with the audio at the channel with the problem. One of them must be blown.

In case of a problem or clarification, don't hesitate to post me a reply.
If you are satisfied, rate my solution with the "thumbs".

Thanks and regards
Please kindly rate this solution
Stelios
direct FixYa link: http://www.fixya.com/users/technical114

Posted on May 11, 2010

Grubhead
  • 5151 Answers

SOURCE: 28 yr old Technics SU

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!! "

  • 1 Answer

SOURCE: looking for a free manual for Technics Su-Z2

stk SU-Z2

Posted on Dec 01, 2010

jdvillanueva
  • 2098 Answers

SOURCE: Technics Su-z25 integrated amp.:no sound on left

Hi dgeiger50,

I've suspected that your main problem is the output amplifier stage, since when you turned the volume way up you slightly hear the sound, meaning your pre-amplifier stage is working. The most common defect is the output Transistor/IC and its coupling/bias electrolytic capacitors. This kind of problem needs to attend by an experienced technician to confirmed where the fault is. Also, you have to consider bad solder joints in that area. This will do the same symptom if there is a cold solder/dry joints.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Posted on Mar 07, 2011

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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.

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Hi,

Take a look if your outputrelay is switching on.
If so, then measure if the signals coming thrue.
Offcourse only if you are sure that there is a signal present.

Regards,
Gerard

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