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Sound problem with Technics SU-G91 amp

I have the whole 5 piece home audio system which was bought new in 1992 (I think). This system is wonderful, everything plays beautiflly, but the sound will not adjust. All of the sudden it just locked in on a certain spot (about 78dc) which is pretty loud, and it will not adjust up or down. The remote will not adjust the sound, nor the knob on the amp. Any suggestions? I hate to disgaurd this system, it plays so well, if the sound was adjustable it would be perfect.

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SOURCE: 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

Posted on Feb 06, 2009

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SOURCE: 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

Posted on Dec 05, 2010

  • 1 Answer

SOURCE: Technics SU-G91 OVERLOAD PROBLEM

Do you have a user manual for the SU-g91?
THANKS
Steve

Posted on Dec 01, 2011

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SOURCE: Technics SU-G91 OVERLOAD PROBLEM

I just bought a Technics SU-G91, hoping to connect to my akai GX-230D reel to reel and speakers. do I need to get anything else to hear it, like a receiver/tuner? everything appears to be working or have I just hooked it up wrong?

Posted on May 31, 2013

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1 Answer

How do I hook up a stereo reciver to the technics su-g91


I assume you want to use the SU-G91 as a power amplifier to drive your speakers. If your receiver has connections for inserting an equalizer (may be labeled pre-amp output and power amp input), remove the jumpers between the pre-amp and the power amp, then run cables from the pre-amp to the SU-G91 inputs. You can have an equalizer between the receiver and the integrated amplifier.
If this is not available, use the recording output (for a tape recorder on older receivers). Note that the volume control on the receiver will be bypassed with this connection.

Sep 23, 2012 | Audio Players & Recorders

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I have a technics su-g91 integrated amp. everything is disconected from it and the yellow over load light is on. What do I do?


hi...i have a electric guitar and i was wondering if i can conect it in my technics su-g91amp?

Nov 24, 2010 | Audio Players & Recorders

1 Answer

I have a Technics SU-G91 amp when I turn it on the over load light lights up and I cannot get any sound from the main speakers


Disconnect the speakers and see how that works out. It's trying to tell you it senses overcurrent or a short on the output.

May 02, 2010 | Audio Players & Recorders

3 Answers

Technics SU-G91 OVERLOAD PROBLEM


THe amp has detected a problem and shutdown to prevent further damage. This unit has 2 amp pacs inside and one or both have failed. If you can solder, you can fix this yourself. The main amp pac is an SVI3206 and can be purchased online for about $60.

Keep me posted.
Dan

Oct 17, 2008 | Audio Players & Recorders

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Have you checked the fuse in the unit?

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Technics SU-G91 Left channel bad


Did you ever find the solution to the left channel issue? I have the same problem with mine.

Dec 02, 2007 | Technics SA-AX540 Receiver

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Technics SU-G91 OVERLOAD PROBLEM


I had the same problem. As soon as the volume reached about 24db it would go into overload. I was able to fix it by soldering all the connections on the larger power module. The one connected the the heat sink. When I took it apart there where several solder points that had come loose.

Oct 10, 2007 | Technics SA-AX540 Receiver

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