Question about ViewSonic P220f 22" CRT Monitor

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Viewsonic P220F power on - black screen

My monitor not working the green light comes on and it sounds like it's comming on. I mean I hear clicking but the screen remains black. can someone help me. I have the "exact" same problem... Monitor pwr-on ok... 3 Normal clicks are heard with big "booonnnngggg" as pwr reaches HOT. Green LED is on. Slight buzzing from CRT yoke is ok. But NOTHING... no Pic, no raster, no illumination, no light... it just sits there w/ blank screen... I don't know what to do... HELP!

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  • fougzki May 11, 2010

    Ok are you inclined in electronics? I suggest to do it step by step, checking the common one for this type of fault. During testing you should have an input video source. I am saying this in general scope.

    You have standbye power. Ok clicks is from relay, as it reaches HOT you heard boong. Could be HOT is taken out. check B+, commonly in monitor it's 135Vdc. And check your HOT junction for short, out of the board.

    You say buzzing sound. Is it in yoke or Flyback? Yoke shouldn't buzz as I know, or you have to cure that. If in say in HOT or flyback, test hot and flyback. and also its neighboring minor component usually diode.

    If you check HOT is the only culprit replaced HOT. If flyback and yoke, replace the unit. Its more practical, monitor flyback and yoke is hard to come by and its almost the same as you buy a new complete set in terms of price. I don't know in your location.

    Only giving some info as reference.


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I can what to do

Posted on May 29, 2009

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