TEAC Powermax 1300 PC audio system - humming noise

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • golfather
    New Member
    • Apr 2020
    • 3
    • uk
    #1

    TEAC Powermax 1300 PC audio system - humming noise

    Hi all

    Currently have a slight hum coming from my PC subwoofer when power is connected. Not audible when music is high volume but only on low volumes you can hear it in the background. Have a ferrite core on power lead but no difference.

    System is a TEAC Powermax 1300 - same as Hercules XPS2.100 system

    Checked the caps visually but none are bulging

    Have been advised to change the main rectifier cap which is currently a Fuhjyyu 3300uF 35V 18x32mm (not sure what pitch, probably 7.5mm)

    Is there a decent replacement anyone can recommend please? Or anything else I should be checking?

    Rest of the board seems ok

    Cheers!
    Attached Files
    Tags: None
    • momaka
      master hoarder
      • May 2008
      • 12164
      • Bulgaria
      #2
      Re: TEAC Powermax 1300 PC audio system - humming noise

      I'm guessing the questions regarding the audio system in this thread are the same as the one posted here:
      https://www.badcaps.net/forum/showth...795#post955795
      ... in which case, I'm linking the two for anyone that might need it for reference.

        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9514
          • Canada
          #3
          Re: TEAC Powermax 1300 PC audio system - humming noise

          Your question has already been answered.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • tony359
              Removing electrical noise introduced by fan
              by tony359
              Hi all,

              I am working on a sound processor, it tends to overheat so I fitted a fan inside. The fan is connected to the +15V of the PSU via a DC-DC converter based on the LM2596 to reduce the voltage to around 10.5V.

              Unfortunately the analogue circuitry is picking up the noise from the fan in two ways:
              1. The fan is close to the analogue section, the motor itself gets into the outputs so I'll have to move it somewhere else
              2. Even with the fan running outside of the case, there is still some noise which is clearly going back to the processor via power line....
              2 Photos
              11-28-2023, 05:18 AM
            • MegaZAC
              Onkyo TX-SR805 noise in one channel
              by MegaZAC
              Surprisingly enough, this receiver doesn't have the DSP chip issue. The HDMI board does not get hot, and sound over HDMI works fine.

              Regardless of the input, the right channel has noise that is clearly noticeable even on average volume level. The only cases when there's no noise is when VCR input is selected (some tracks on the board are damaged, maybe that's why), or if HDMI input is selected but nothing plugged into it. In all other cases, even when no input is connected I still have the noise.

              There's some logic behind it. As soon as I select an input I get only left...
              04-23-2025, 10:09 PM
            • courtcircuit
              Philips HTS8000 home cinema noise problem
              by courtcircuit
              Hello

              I have since a long time a Philips HTS8010S/01 which has been old but was doing the job.

              Since a few days, it starts by making a weird "static" nois when switches on for a few seconds to a minute and then works like a charm.
              Noise loudly outputs from the 3 channels, even if no signal is sent by the controler.DVD to the subwoofer/amp unit.

              I was thinking of a soldering that was starting to be damaged and that was only doing the job after a few seconds of heating, most probbaly on the power board
              Removed each of tyhe boards
              ...
              02-08-2025, 08:22 AM
            • karatzdi
              Denon AVR 1908, High pitch noise on Surround back Left channel after long overhaul
              by karatzdi
              Hello,

              I know some might say... just buy another one. Sell it as parts..!

              So had this AMP for quite some time. Recently I saw light smoke coming out of the AMP. Had my fire extinguisher close by. Just kidding. Turned immediately all devices off from mains.
              Let things cool a bit, and opened up the amp device. I clearly saw on the main board which hosts the 5X amp (5.1), 3 10 ohms 1W resistors had their leads looking black, while the rest of the remaining 2 x 10 ohms were brownish as being installed from factory.

              Spent some time downloading the Service...
              06-11-2024, 08:38 AM
            • Biruslapio
              LG 50PB690 power supply terrible noise
              by Biruslapio
              I bought this TV with really bad oxidation on the power supply and bottom X boards, it was working but during pickup there was a lot of background noise so I don't know if it had this problem before.

              As soon as I could I opened the tv and started working on it, did not test it before since it had back bars on the screen and obvious signs of humidity. The X boards were replaced and the screen now works 100%, but the power supply...

              I washed the board and resoldered almost everything on the primary, the oxidation happened because of constant mains AC current flowing,...
              07-13-2022, 12:46 PM
            • Loading...
            • No more items.
            Working...