Capacitor buzzing sound

Discussion in 'General Electronics Chat' started by Iodem_Asakura, Jul 28, 2005.

  1. Iodem_Asakura

    Thread Starter Senior Member

    Sep 14, 2004
    I'm reparing a monitor which had the horizontal transistor in short. I replaced the transistor, but when i connected the monitor a capacitor made explosion because i forgot to weld some parts i had unweld. I replaced the capacitor, and now when i turn on the monitor it makes a buzzing sound.

    A friend of mine tell me it is because some capacitor is damage. But i cannot find the damaged capacitor. Do you think this is the cause of the sound? How can i make to find the damaged part?
  2. legac

    Well-Known Member

    May 4, 2005
    It seems that certain components of the power supply were damaged by the shorted horizontal transistor. B+ would not be regulated. Besides, the flyback transformer could be shorted. Anyway the first thing you should do is to disconnect the AC line, then use an Ohmmeter, set Rx1 to check some FUSE RESISTORs around the powersupply and around the flyback. Hope that will be workable.
  3. thingmaker3

    Retired Moderator

    May 16, 2005
    You probably already know this - but some visiting this thread might not...

    ...remember to safely discharge the aquadag using an adequately rated shorting stick - then proceed with ohm-meter checks.