EDEN EC210 - 180W Bass amp - crackle noise and low gain in power amp output

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Doc38343
    Badcaps Veteran
    • Apr 2015
    • 402
    • United States
    #1

    EDEN EC210 - 180W Bass amp - crackle noise and low gain in power amp output

    EDEN EC210 - 180W Bass amp - crackle noise and low gain in power amp output
    Pre amp output thru effects send is clear as a bell.
    Power amp stage is crackling and has no gain but is slightly audible when preamp is over halfway up.

    Was loaned out and came back fried... trying to find a schematic of the power amp stage.. very cheap looking build, no big power amp chips, I am wondering where the heck 180 watts comes from..LOL

    Probably why it is fried... Overdriven or external speaker impedance

    Hope someone has schematic or experience with one of these.

    Can do photos later this eve, busy right now.
    Tags: None
    • Khron
      Badcaps Legend
      • Sep 2006
      • 1350
      • Finland
      #2
      Re: EDEN EC210 - 180W Bass amp - crackle noise and low gain in power amp output

      Photos would indeed help...
      Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

        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
        • eduaqa
          Amplifier - bad sound when loud sound on bass
          by eduaqa
          I'n trying to fix a M&S SYSTEM DMC-1which have following problem:
          I'm using FM station to do this fix, I works perfect if volume below around 8 or if bass is set to zero, the sound can go to 20 without problem, but if I set bass to maximum and try to go over 10 the sound comes distorted ... I saw a video on YouTube the person saying about the main capacitors on the power portion, but I disconnect the main transformer and inject direct to the capacitors PINs my bench power supply -23v 0v +23v, but still distorted so I think the problem is not the capacitor neither the transformer...
          08-06-2022, 11:28 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
        • 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
        • Loading...
        • No more items.
        Working...