Proiector COMPAQ IPAQ MP1410

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  • ut-norm
    Senior Member
    • Nov 2019
    • 67
    • italia
    #1

    Proiector COMPAQ IPAQ MP1410

    The projector in question does not turn on. On a side card of the power supply, of which I am attaching the photo, you can see two burnt resistors, those circled in red. Unfortunately I have not found any circuit diagram which is quite complex. it doesn't even have screen-printed components. The integrated pwm UC3844A has all the pins in short circuit. The two glass diodes are out. The one with the colored bands (I think it is a zener) is in short circuit, the other is open. The diode marked SM19 and 'good. The two components in SOT-23 package have some resistance (I don't know if they are transistors or other).
    This projector is a bit dated and maybe some of you know it. Thank you for any answers.
    Hello everybody.
    Attached Files
    Tags: None
    • Diah
      Badcaps Legend
      • Feb 2013
      • 6355
      • Germany
      #2
      Re: Proiector COMPAQ IPAQ MP1410

      this is genera diagram for UC3844A in circuit, it may help you
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