Hanns-G, Hissing backlight then goes off.

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  • bitman
    New Member
    • Feb 2010
    • 1
    #1

    Hanns-G, Hissing backlight then goes off.

    I have a Hanns-G HSG 22" monitor that I bought for our church from eBay. It worked well for about 3 months never being shut off. One day I thought, Hmm I should shut it off.... what a mistake. The next time it was powered up it did the infamous 2 seconds to black. I brought it to my shop expecting fried inverter transformers and or fat caps but found none nor any other part that seemed bad. Encouraged by this site I recapped the whole thing to no avail. So I found a new power supply / inverter board on the net (new) and bought it, that didn't fix it. No wonder I couldn't find anything wrong with the old board!

    So now it has to be the back light right?
    One of them hisses like a snake just before shutdown.

    Any ideas before I rip into it further? back light ccfl bulbs in lcds, their troubleshooting and replacement is kind of new territory for me.

    :Ron
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