Question about Technics Audio Players & Recorders

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I have a technics SU G75 receiver that got a surge from the power while using the stereo. It turns on, but the digital screen flashes and says overload. How do I fix it?

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I have a technics SU G75 receiver that got a surge - z

Posted on Oct 04, 2019

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6ya6ya

6ya staff

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Posted on Jan 02, 2017

smarthome2

Frank Fulton

  • 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

Grubhead

Grubhead

  • 5699 Answers

SOURCE: I have a Technics Stereo Integrated Amplifier

Are these resistors near or linked to whatever is on the heat sink? If they are then they are bais resistors and they have burned up due to a fault on the devices on the heat sink.
Resistors are cheap, all you need to do is find out what value they are. This is part of the colour code. However if they are burned then you might not be able to read the code! So you will need the circuit diagram or someone to tell you the value.
The problem however will be if whatever on the heatsink has gone!
It could be an IC since you have lost both channels, unless you have shorted the speaker wires of both channels somehow and blown both right and left amps!

Posted on Nov 27, 2009

Sparky2012

Sergio Shamshoian

  • 102 Answers

SOURCE: My Technics AV Control Receiver SA AX530 is in overload

An amplifier should never be turn on without speakers, it will overload internally.
make sure speakers work and try again.

Posted on Dec 04, 2009

dunnbiker

David Dunn

  • 8546 Answers

SOURCE: I have a Technics stereo integrated amplifier SU

It chirped because the bearings were worn out, then it froze up and isn't moving any air. Get it replaced. DO NOT run the unit if it keeps overloading or you will have a bigger problem.

Posted on Dec 27, 2009

kerrizmail

  • 1 Answer

SOURCE: Technics SU-g75 Amplifier. No longer

ALL speaker jacks must be loaded and closed for any sound to come out of this system. Missing one speaker, or one bad connection and you will get no sound or some will work and some will not. speaker wires need to go deep into speaker jack holes.

Posted on Oct 12, 2010

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1 Answer

Technics SU-G75 owners manual download


http://www.manualslib.com/manual/926367/Technics-Su-G75.html?page=2#manual Technics SU G75 Service Manual Page 2

Sep 23, 2015 | Technics SU-G75 Amplifier

1 Answer

Want to download Technics SU-G75 service manual


Technics will not give it to you. Gotta pay the piper!

Did you try to google it - might get lucky - but don't hold your breath.

Sep 21, 2015 | Technics SU-G75 Amplifier

1 Answer

Ok I have a technics integrated receiver su-g75 it


The amplifier power transistors could be bad, the speakers can be muted or a fuse for the speakers could have opened.

Aug 28, 2014 | Audio Players & Recorders

1 Answer

Technics SU-G75 has no sound


Hello
when the resistors are burned,means that the transistors are damaged, or the power module is damaged.
and in your case its the power module.
Hope this helps.


23392686-biweyzzz1swyjlxgbbebmoak-5-2.jpg

Feb 07, 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

1 Answer

Technics SU-G75 overload


I have the same problem..it will be required to remove the board and resolder "cold " solderings... None of above solutions have been helpful, but "you get what you paid for"..and I completely disagree...even if required, remove ALL audio power managing circuitry and replace this expensive original design with TI´s Integrated chips..using PWM technology..unless you want to go back to L6, ot Kts tubes..

Nov 07, 2012 | Technics SU-G75 Amplifier

1 Answer

I have a Technics stereo integrated amplifier SU G75. The cooling fan began making chirping noises then stopped. Now every time I turn the stereo on I get a overload message. Could it be the cooling fan...


It chirped because the bearings were worn out, then it froze up and isn't moving any air. Get it replaced. DO NOT run the unit if it keeps overloading or you will have a bigger problem.

Dec 27, 2009 | Technics SC-DV290 System

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