Toshiba 32AV502R - No Sound, Burnt audio amp IC.

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • lookimback
    Badcaps Legend
    • Aug 2013
    • 1489
    • USA
    #1

    Toshiba 32AV502R - No Sound, Burnt audio amp IC.

    Got this one on Sunday. Turns on, but has a bad panel. While testing, I discovered it has no sound. Upon further inspection I found the audio amp IC to be fried. I got it off the board, but 4 traces came up with it. They were fused to the pins. IC also has burn marks on the ground pad underneath. I can't find any shorts, so I think it's just the IC. I'm going to try to fix it. I think I can jump the traces with magnet wire.
    Attached Files
    ------------signature starts here------------


    Tags: None
    • Andrew F. Ali
      Badcaps Legend
      • Jan 2014
      • 2450
      • Trinidad & Tobago
      #2
      Re: Toshiba 32AV502R - No Sound, Burnt audio amp IC.

      I had a similar issue with another set once.
      I used a signal tracer and found the audio IN signal pins (X2 for stereo).
      Built 2 audio amps with LM 386 and connected to the speakers.
      I think it still works today and that was since last year some time.

        Comment

        Previous template Next

        Related Topics

        Collapse
        • i_am_patch
          Roland KR-3500/4500 Digital Piano. Crackling audio sound on all keys -Fixed
          by i_am_patch
          Hi All. I had a Roland KR-3500 Digital Piano (similar to the KR-4500) that exhibited a Crackling audio sound on all keys. After reading somewhere about someone with a similar issue who had replaced all the Electrolytic caps I decided to also go down that route. (Spoiler : It worked !) After some basic troubleshooting I determined that it could be noise feeding thru from the Keyboard scanning since the Demo tunes played back undistorted and the Audio amp / speakers were fine ( Inserted an Audio signal into the rear Audio input). After extracting the main board from the shield, I replaced 7 Capacitors...
          04-30-2024, 08:20 PM
        • Piaskos
          Dell Vostro 5490 - no sound, no audio device
          by Piaskos
          Hi, i've got problem with Dell Vostro 5490.
          Board - Mantis CML 18788-1

          Windows says "no audio device detected". The other functions work properly.

          What i've done:

          1. I checked motherboard

          2. I changed audio codec (ALC3204)

          3. I reflashed bios with clear ME

          4. Audio is enable in bios

          5. Both speakers are good

          6. After installing the drivers from the Dell website, the devices visible in the manager:
          - Audio for intel displays
          - Intel Smart Sound Technology...
          01-30-2023, 02:58 AM
        • ChaosLegionnaire
          what i went through dealing with my mobo with dead onboard sound!
          by ChaosLegionnaire
          so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!! what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol!

          i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
          09-13-2022, 09:02 AM
        • CapLeaker
          Motorola Minitor V pager no audio / sound repair
          by CapLeaker
          Got a bunch of Motorola Minitor V pagers from Fire Departments here trying to fix some out of the non working ones. These pagers are known for either no sound / audio or they don’t charge. The internet is full of suggestions like metal shavings inside the speaker?
          Anyway so I took one of the Minitor’s apart for my amusement in order to see why that is and nobody can fix em. There are no service manuals or schematics for these that I know of. However… I did find the problem!

          On the main board of this unit where the speaker connects to there is a metal shield....
          06-10-2025, 07:44 PM
        • televizora
          HP 8470p - distorted sound and noise when playing audio
          by televizora
          Hello.
          I have an issue with HP 8470p - rather strange one.
          I have a noise and sound distortions on both internal speakers and external speakers, when I plug such into the 3.5mm audio jack.
          Seems like the noise is present especially when I play audio, where there are parts/sections where the volume of the actual recorded sound is low.
          Interestingly, when I play the windows sound test, everything seems to be almost okay. The sound/distortions are similar to when you have interference from some other piece of equipment nearby or when you have an audio receiver with bad amplifier...
          12-31-2021, 10:25 AM
        • Loading...
        • No more items.
        Working...