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Technics SU-Z980 very low sound even on full volume

My Technics amp SU-Z980 was working fine six months ago.
Now thereĀ“s no sound (very low sound on full volume)

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  • Scott Frye
    Scott Frye May 11, 2010

    Hi....
    Is there a tape monitor switch that's ON and not supposed to be....or a Mute switch that's ON?

    Do the headphones have the same problem?

    Let me know


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6 Suggested Answers

robotek
  • 1512 Answers

SOURCE: TECHNICS SU-V50

Hi max

I have done a followup with Technics Parts agents in the US, they will get back to me and then me to you shortly :) A vote as FixYa would help improve my ratings. Thanks

Graeme

Posted on Feb 09, 2008

  • 1 Answer

SOURCE: Technics SU-V460 Amp Problems

Problem with older equipment is that mechanical switches corrode. Try some tuner cleaner on switches. One side cutting out may require the speaker leads (inside the cone of speaker) to be re tinned. Old speakers and lossa mileage cause solder to break up into powder. Re tinning the flexible link (looks much like a wick) allows that electricity to get into the speaker coil. If all else fails those old TV repair shops actually do have real techs that can fix it. Not like the current Geek Squad type of replace replace reboot replace type of tech. Good luck. Ed

Posted on Jan 05, 2009

  • 1 Answer

SOURCE: Technics SU-G75

I had the same problem. The solution to me was presoldering transistor Q708. http://www.flickr.com/photos/37147023@N03/3511227679/?edited=1

Posted on May 08, 2009

smarthome2
  • 1114 Answers

SOURCE: Tecnics SU-G95 stereo overloaded

Power down,disconnect the speakers and power back up. If it still say's overload, it needs to go to service. If not, check your wires, connections, and speakers one by one to hunt down the problem and correct. Hope this helps

Posted on May 25, 2009

  • 1 Answer

SOURCE: Technics SUA 900mk2 amp cuts out at high volume.

check speaker wiring its not gone loose

Posted on Sep 05, 2009

  • 1 Answer

SOURCE: su-v55a technics amp cuts off when volume up to 2

I got a problem for su-v55a technics one speaker is not playing

Posted on Mar 03, 2011

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2 Answers

Technics su-g75 amp goes to loud static after a few minutes


Hi Aawpharmd,

system control error.
please go for repair shop.
regards,
nuwan

Jan 13, 2014 | Technics SU-G75 Amplifier

1 Answer

No sound from stereo


Greetings
the power module is damaged and the components ... as you described, resistors burned and other components are over heated .
you need a service technician if you are still hanging on your baby :)
unless you are a technician .i will be glad to send you send you schematic.
i cannot post it as(PDF).

Dec 29, 2013 | Technics SU-G75 Amplifier

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Good day i have a Technics amplifier SU-X320. Problem is it powers up up there is no sound. Checked all basic fault finding, suspect it is the volume IC.


"Volume IC" do you mean an IC that is a pre-amp and controls the volume and things like tone? Or do you mean the main power amp IC, which will be on the big heat sink?
If you amp uses the latter and not individual separate devices for the power amp, suspect that over the other IC. But if the amp has separate power amps for both channels, replace the IC.

Oct 09, 2013 | Technics Amplifiers & Preamps

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Hello I have a Technics SU-V45A amp, it's about 18


See there is a problem with the volume conroller as it is 18 years old the controller has worn out replace the volume controller with a new one and you will be able to enjoy great sound again

Dec 05, 2010 | Technics SUV500 2-Channel Amplifier

2 Answers

Su-v55a technics amp cuts off when volume up to 2


usually meens it is protecting itself from destruction
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Feb 09, 2010 | Technics SUV500 2-Channel Amplifier

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Technics su-v560 stereo amp crackling


That is a common symptom of not properly grounding of negative side of the output of power amplifier section.Just resolder all component parts joint in power amp.sectiton and double the solder all negative ground.Also clean the pots of all volume controls and selector with a lighter fluid or desame that fluid so whatever sound or crackling noise eliminated and works normal again.. Hope it may help you;;

Jun 08, 2009 | Technics Amplifiers & Preamps

1 Answer

Technics SU-V98 No Sound


If I understand your posting correctly, the amp works using the Aux In connectors but not using the VCR1 even when VCR1 is selected correct? If that is the case, there is an internal electronic switching IC (TA9263 I think) that may be defective. This is not a complex repair and can be confirmed easily by any shop that does audio repair. They will trace the incoming signal with an oscilloscope to the IC and see nothing come out when VCR1 is selected. The IC costs less than $10.

Dan

Feb 05, 2009 | Technics SUV500 2-Channel Amplifier

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