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Getting the hiss noise from my sony receiver?

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  • Getting the hiss noise from my sony receiver?


    Hello again. How do I get the hiss out of my sony 2 channel stereo receiver? It does not have a ground cable so I put one in.I also put a new plug and ac wire in. I also bought a noise reducer at the rat shack. Nothing has helped. I really would like to fix this problem. It is in mint con. I called sony for a new power transformer but no luck. Does anyone know were I can get one? Also will this slove my hiss problesm? Thanks jm

  • #2
    A little more background please.


    Is the hiss comming from the unit itself or from the speakers?
    Did this recently develop?
    Does it happen regardless of the input?

    Comment


    • #3
      Re: A little more background please.


      All electronic devices create some noise, and the amount of noise they make is more often than not inversely proportional to their cost. If this is an inexpensive receiver it may well be normal for that model.
      www.billfitzmaurice.com
      www.billfitzmaurice.info/forum

      Comment


      • #4
        Hiss from my sony receiver?


        What model receiver do you have? Do you have a manual? What is the listed signal to noise ratio(s/n)?

        Marlboro
        The Calipso Line Array System: http://techtalk.parts-express.com/album.php?albumid=9

        Comment


        • #5
          Re: A little more background please.


          Well everything. Speakers and headphones. I do not know it was bought for 20.00 dollars. Yes it happends regardless of inputs.

          > Is the hiss comming from the unit itself or
          > from the speakers?
          > Did this recently develop?
          > Does it happen regardless of the input?

          Comment


          • #6
            Re: A little more background please.


            Yes I have been told that. It might be normal for this model.

            > All electronic devices create some noise,
            > and the amount of noise they make is more
            > often than not inversely proportional to
            > their cost. If this is an inexpensive
            > receiver it may well be normal for that
            > model.

            Comment


            • #7
              Re: Hiss from my sony receiver?


              Well the model is str-vx250. Maybe made in 84. No manual. Id not know the noise ratio for this unit. jm

              > What model receiver do you have? Do you have
              > a manual? What is the listed signal to noise
              > ratio(s/n)?

              > Marlboro

              Comment


              • #8
                Any repair....


                Assuming that the hiss you hear is not inherent in the receiver itself, any repair that you might pay to have done(which is problematic finding someone to work on a receiver that is 23 years old) will cost so much above the $20 you paid for it that you might as well pick up a new or a new used piece of equipment.

                Marlboro
                The Calipso Line Array System: http://techtalk.parts-express.com/album.php?albumid=9

                Comment


                • #9
                  I'll second that opinion...


                  > Assuming that the hiss you hear is not
                  > inherent in the receiver itself, any repair
                  > that you might pay to have done(which is
                  > problematic finding someone to work on a
                  > receiver that is 23 years old) will cost so
                  > much above the $20 you paid for it that you
                  > might as well pick up a new or a new used
                  > piece of equipment.

                  > Marlboro

                  That said, I have a Vintage Sony receiver about 30 yrs-old that plays just BE-YOO-TI-FULLY .

                  Comment


                  • #10
                    Re: I'll second that opinion...


                    I wish mine did.

                    > That said, I have a Vintage Sony receiver
                    > about 30 yrs-old that plays just
                    > BE-YOO-TI-FULLY .

                    Comment


                    • #11
                      Hiss from both channels?


                      If the hiss is coming equally from both channels I would look into the power supply as it is common to both channels.

                      Are you competent to lift the lid and do some voltage measurements or parts replacement?

                      While you are at it you might get a spray can of cleaner/lubricator for electronic controls. Spritz all the controls and switches and work them back and forth a few times.

                      Electrolytic caps have a shelf life although I am not sure that when they age they produce hiss, but they could be suspect.

                      With the lid off and while on and the hiss is present try spritzing various parts of the circuit board with Cool-it, then try a hair dryer on various parts -- to raise and lower the temperature of various parts. This sometimes will help point to the failing part.

                      Then, if none of these trouble shooting trials works, I would put it on the curb and buy a replacement.

                      Be careful with the lid off and voltage on. Work with one hand in your pocket.

                      Comment


                      • #12
                        I have the same one - no hiss


                        I have the same reciever I picked up in a garage sale about 8-9 years ago for $25. Mine has no hiss. The only issue I have with it is that the battery backup doesn't work that retains the FM station memory. I can replace the batteries on the back and it may retain the memory for a few days only. Nice sounding reciever. Sony alway had a loudness circuit that really works well.

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