Optocouplers

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  • Eel_dahc
    Member
    • Apr 2017
    • 18
    • USA

    #1

    Optocouplers

    I got a free Polaroid flm 323 TV and I am assuming that the power supply is bad because I don't get any voltages like shown on Copp#ll tv site or youtubes. But I have it at the main cap. I already replaced a couple of diodes and tested the caps.

    This is just for me to learn on and try to fix.

    So I was wondering about the optocouplers. Took them off to test. Using a DMM I got nothing in diode mode up to 200k. My little lcr-t4 didn't find anything.

    Using a tester i rigged up with a 3.7v battery, led and 1k res on breadboard and only one lit up and it lit up once. The other 3 did not. So I wonder if I either blew them up or they didn't work anyway.

    I have plenty of scrap power supplies from old crts, satellite boxes and PC. Would those optocouplers be safe to use or are they all different like transistors and mosfets?
  • petehall347
    Badcaps Legend
    • Jan 2015
    • 4427
    • United Kingdom

    #2
    Re: Optocouplers

    check the datasheets .

    Comment

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