Question about Technics SUV500 2-Channel Amplifier
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Posted on Jan 02, 2017
SOURCE: SU-V460 cuts out at high volumes
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.
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Posted on Jun 17, 2008
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
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
It sounds like the switch might be broken. It might need to be replaced.
Posted on Dec 09, 2012
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