Question about Technics SUV500 2-Channel Amplifier

I can barely hear output even when the volume is at 100%

I got a system from a friend of mine that appears to be in great shape however, when I hooked it up I can barely hear the sound out of the speakers. I tested the speakers with another system and they were fine. If I crank the volume up to 'full blast' I can hear it but faintly. Its like standing next to someone who has ear buds in and the volume is too high, you can hear the tinny overflow but its not really music. I looked for something that would look like a fuse or switch on the outside of the case but nothing. I pressed the help/reset button and the text says system is operating correctly. Any advice is appreciated. I have it connected to a tuner and a cd player and the result is the same regardless of the source. Thanks in advance. System: Technics SU-G88

2 more comments
djhalstead Sep 01, 2008

All other but the two main front speakers work. Does not make any sense why those would work but not the large front speakers.
jes088 Nov 23, 2008

i can barely hear the output on the back speakers when the volume is at 100%
Anonymous Dec 07, 2008

This is happening to me too
Please find a fix!
bwest6 Dec 19, 2008

The problem seems to be in the volume control knob ,on low it crackles when you crank it up a ways louder, it works but then it is too loud. also my speker wire ports don't all seem to recognize the speaker wires. they work on a small stereo so I know its not the wire or speakers. The system is old . SU-4707Technics. I have a Sony System that has the speaker port problem also ,where some work.

2 Answers

Mike Duncan

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219 Answers

You may have the tape monitor button pushed in or if you look on the back of the unit you may find a pre-out/main-in set of rca jacks. If you don't have a switch to bypass those jacks then you will need to use a set of 2 RCA jumper cables or some stubs made for that purpose. Hope this helps.

Posted on Apr 13, 2007

Anonymous

I know exactly what this problem is, you have a dry joint inside. I get exactly this problem every couple of years, I take it to a repair centre and its back and working in a day or two.

Posted on Aug 12, 2007

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chris mel

1 Answer

SOURCE: I got a system from a friend of mine that appears

did you ever figure out what the problem was? i just got one and it is doing the same thing. thanks for your help!

Posted on Jul 09, 2013

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