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Dead Monitor

Discussion in 'Electronic Repair' started by Daniel B, Jul 2, 2004.

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  1. Daniel B

    Daniel B Guest

    Thanks for any help that you can bring to me. My problem is with a PC
    Monitor. Initially the monitor is dead, I discover that the
    HOT(ECG2353) is short, the mosfet driver (IRFS630) is short, and a
    capacitor (364 - 250V) is broke. I change this components and the
    monitor work well (many resolutions in 60Hz). The problem is that I
    try to change the resolution of the monitor to 800x600 and refresh
    rate to 70Hz (then I discover that this is a posible invalid mode),
    when I make the change the monitor turn off and a capacitor (47
    microfarads, 200V) was very hot and have a big blister. With other
    revisions the capacitor exploit, I change it. Now I see that the B+ is
    in 350V and the voltage across this capacitor (that I change) is 320V.
    The flyback don´t have any voltage in the auxiliary windings. The IC
    regulator (3842) have voltage and I review each diode and transistor
    and I can´t see damage. I ´m greatful for some help.

     
  2. Jamie

    Jamie Guest

    change the regulator.
     
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