Question about Technics SUV500 2-Channel Amplifier

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Technics SU-G75 Not getting any sound out of the Amp. Looked for any kind of switch or anything out of place, but can't come up with anything. Any help would be greatly appreciated.

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  • yamaharhino7 Feb 06, 2009

    I really appreciate the help. Thank you, I just found the same component on ebay for 35.00. I think I'll go that way. Thanks again!

  • Anonymous Feb 20, 2009

    TECHNICS STEREO TURNS ON BUT NO SOUND

  • Liberachy3 Apr 13, 2009

    Im pretty sure he has tried the speakers button a few times before he came here for help. Im having same problem, the speakers stopped working. The display works, all functions work, but the speakers concked out on me, none of the 5 speakers jacks produce sound. I took the reciever apart, I smelt something burnt around near the fan / speaker ports. Could have even been from the big transistor thing near the fan also. IDK,,but something got fried. & If that other guy is right about the prices on the parts,,forget about repairs. Im not about to dish out 120.00+ bucks on this when anyone can find a good reciever for less than the price of one of these parts. I also tried a yellow page search on electronic repair places. They are almost non-existent. as rare as a shoe repair shop. Pple don't repair, they throw away & replace.

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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

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Try pressing the "speakers" button on the lower left side...?

Posted on Feb 22, 2009

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Th amp may be in protect mode with the outputs turned off to prevent further damage. These units have an AMP-Pac for the final stages that may be defective. The part number is RSN3306. This is the most likely part and can be purchased for about $60. Also inside is another amp-pac for the center and rear speakers (SVI3204B) which runs about $58. Either can cause the symptom you describe.

Dan

Posted on Feb 06, 2009

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Does anyone know where i can find a volume control switch for the sug75 amp

Posted on Mar 23, 2013

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Hello. DC Offset will cause this issue. DC voltage of more than around .5V DC, at the output of either channel, will cause this. If the amp has no offset, then the DC Protection relay coil has no voltage, or the side of this coil, is not being grounded. In either case, the relay won't turn on.

Dave

Posted on Sep 27, 2012

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Check for dry solder joint like dankolev said for all the Regulators, how to spot dry solder joint: http://mercedes-190.co.uk/topic/6581171/1/

Posted on Sep 14, 2012

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