Question about Technics SUV500 2-Channel Amplifier

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I have purchased a su-v460 amp and had it working for about half hour then the current drive went out then wouldn't go back on then heard a popping sound and then smoke so turned of straight away! if can help would be very happy .

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6ya6ya
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Posted on Jan 02, 2017

robotek
  • 1512 Answers

SOURCE: SU-V460 cuts out at high volumes

Hi samipoyo

You need to check the amp for dry solder joints about the output stages. These amps are notorious for soldering going bad. I would set about re-soldering the entire output stage.

I am more than happy to answer any other questions you may have about it, just give me a hoy :) If you are still unsure, or have problems, then before you give a rating for this advice, please get back to me and we can try some more things.
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

Posted on Jun 17, 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

  • 280 Answers

SOURCE: when i turn up the amp the 'current drive' cuts

Check all your wiring for short circuits, check your speaker coils are not shorted either - if you cant do this try any other pair of speakers on the system.

check the main capacitors in the power supply, check the internal fuses, and change the wall plug fuse - check all the large capacitors for closed/short circuit or cracked solder joints, resolder anything suspicious looking. the fuse could be **nearly** blown, and bend apart when it gets warm, change it to be sure... hope this helps.

Posted on Jan 25, 2010

Grubhead
  • 5017 Answers

SOURCE: I have a Technics SU-V460 Integrated Amplifier that won't stay on....the power button doesn't stay pushed in. When I hold it in, it works but the button makes a crackle sound.

It sounds like the switch might be broken. It might need to be replaced.

Posted on Dec 09, 2012

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Woods 49556 / TD1300 manual
http://waterheatertimer.org/pdf/Woods-49556-TD1300.pdf
http://waterheatertimer.org/Woods-timers-and-manuals.html

How to program timer.
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SU-V460 cuts out at high volumes


Hi samipoyo

You need to check the amp for dry solder joints about the output stages. These amps are notorious for soldering going bad. I would set about re-soldering the entire output stage.

I am more than happy to answer any other questions you may have about it, just give me a hoy :) If you are still unsure, or have problems, then before you give a rating for this advice, please get back to me and we can try some more things.
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

Apr 30, 2008 | Technics SUV500 2-Channel Amplifier

3 Answers

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Hi There, you need to eliminate all the connection and surplus items around the SUV-460 amplifier to determine if its the amp or not..

That is disconnect every thing then connect just the speakers and an input to the amp like a CD player or radio input. Then see if the amplifier plays OK thru the speakers on both channels and the balance control works fine....If it doesnt then the fault is inside the SUV-460 but if it all works fine than start reconnecting theemixer panel carefully and recheck all your cables and connections. Its a process of elimination to determine if its a "Box" fault or a cable fault...

Cheers From YUBEUT

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