Question about Sansui Audio Players & Recorders

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I have a Sansui AU-417 amp. The volume control is scratchy and drops some of the volume of one or both channels around the most used volume levels. It is ok at higher volumes which is rarely used. Probably needs a new potentimeter. An ideas for the part would be appreciated.

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Amp switches off at about -10db volume level

MAKE SURE NO SPEAKER WIRES ARE TOUCHING OR CROSSED, had same problem. Reciever shuts down to protect the amp.

Posted on Nov 15, 2007

  • 2 Answers

SOURCE: volume level dropping unexpectadly

The A1 has an internal self diagnostic program which you can go through to find the fault. You can access the diagnostic program by simultaneously pushing some buttons on the front panel. The Yamaha service manual for the A1 tells how to do it and what the diagnostic codes mean. You can get a copy of the service manual on the web from several suppliers for a small fee.

Posted on Jan 20, 2008

robotek
  • 1512 Answers

SOURCE: I own a classic Sansui

Hi mellemcee


Cool amp mate, and becoming collectable now to. Sansui amps from the era where the best in the world of HiFi. iT may have lost bias control to the offending channel, it may have dirty source switches, tape monitor switch, or even speaker switching. The speaker protection relay may also have a dirty contact, will usually burst back into life with a quick rotation of the vol control. Can you pin the problem down a little more with the info i have given you, try all the controls to see if it impacts on operations, you will need to fix those problems first. Low bias would make that channel sound distorted at low levels also. Is this what is happening to you??

regards
Graeme

Posted on Apr 18, 2008

CLARKPINK55
  • 71 Answers

SOURCE: Erratic volume on Technics SU-X911 amplifier (Class A)

its the ic that controls the + and - voltage and there are capacitors that have leaked all the caps on that board need changing could be expensive and time consuming but its the age of it . if i was going to do that job £200 plus\

Posted on Dec 08, 2008

dunnbiker
  • 8546 Answers

SOURCE: Denon AVR 1910 Volume Level

My Pioneer VSX-36TX (circa 2002) does the same thing. Modern AVR's count up from minus something to 0db and go just a few db higher into 'plus' territory. It seems arbitrary but that's how it is.

Ask yourself this: who ever really turned the volume knob up to maximum on any amp on purpose, and had speakers survive it? In other words, why have all that capacity on a potentiometer if you never use it?

Little known fact: With that in mind, Bose Corp actually designed a product that intentionally used the full physical travel of a volume control - the Bose Acoustic Wave Music System.

Posted on Feb 12, 2010

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Scratchy sounding volume controls?


If you have a scratchy sounding volume control or your channels cut in and out when adjusting the volume you are most likely suffering from a dirty potentiometer (volume knob) Fully disassemble your DTT2500 unit and liberally spray electronics cleaner in every party of the volume knob (and the other knobs as well). Let fully dry before reassembling.


on Nov 08, 2007 | Creative Labs DeskTop Theater DTT2500...

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Sansui AU-D33 Lh speaker channel not working.


As the channels are identical you can use the good channel has a guide to the bad one. First thing is to look around see if anything does not look the same as the right channel.

If nothing obvious stands out, with the power on, using an insulated screwdriver touch the two channels one at a time. Keep away from the power supply and anything that is common to both channels. The channel will buzz once touched. Depending which points you touch them. The right channel will tell you if it should buzz at that point. Work backwards from the speaker outputs if you can. If you hear a buzz on the left channel then it is working at that point, if it produces the same sound on the right.
Using this method you should track down the part that has gone.

Dec 11, 2015 | Audio Players & Recorders

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I have just reinstalled my Sansui component stereo system, and have a couple of problems. One is a scratchy noise on one speaker channel. The other is a seeming lack of results when I attempt to use the...


Buy some electronic contact cleaner, remove top, spray volume and balance pods and use the straw provided to target the small hole. Move controls back and forth as you apply the cleaner. If that fails! then the problem is a bad driver or audio output semiconductor.

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Hi...

Is that the fancy pot with more than 6 leads..kinda square looking?

This place has some.

http://angela.com/

Rate my help if this helps...Thanks

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How do you connect power amp to av


I presume you want to use it to drive speakers from a source controlled by the Denon??? Probably the Front channels? We'll assume that's it...

Run RCA cables from the Pre Out jacks to the NAD's L and R inputs. If it has a volume control, set the NAD to its maximum volume (for consistency *), run through the setup for levels and you're done.

* If it doesn't have a volume control it's already set to max. That's normal for power amps. Your receiver / preamp controls the volume fed to them.

BTW: If you're thinking of using two sets of Front channel speakers simultaneously you'll have to choose a level on the NAD that will match up with the others in volume.

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There are 2 250v 4a fuses inside the amp. They can blow and
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Nov 19, 2009 | Audio Players & Recorders

1 Answer

I need a replacement volume control for a Sansui-AU-717.


Hi p00pmeister

This great old amp uses an Alps brand attenuator. This could be a little hard to find an exact fit replacemernt. Have you tried to clean the control. The can generally be restored by flooding the internals with CRC 2-26. If you have intermittent channels, check also the amp/preamp switch to the rear of the amp also.

Check out this Has some instruction on dealing with the disassembly of the attenuator

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





Jun 05, 2008 | Sansui Audio Players & Recorders

1 Answer

I own a classic Sansui intergrated amplifier (AU-717). It has a short in one channel. At low volume, the sound shorts out. I've had this unit for about 20 years now. Otherwise, it's a great product!


Hi mellemcee


Cool amp mate, and becoming collectable now to. Sansui amps from the era where the best in the world of HiFi. iT may have lost bias control to the offending channel, it may have dirty source switches, tape monitor switch, or even speaker switching. The speaker protection relay may also have a dirty contact, will usually burst back into life with a quick rotation of the vol control. Can you pin the problem down a little more with the info i have given you, try all the controls to see if it impacts on operations, you will need to fix those problems first. Low bias would make that channel sound distorted at low levels also. Is this what is happening to you??

regards
Graeme

Apr 18, 2008 | Audio Players & Recorders

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