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Question about Philips Brilliance 201B 21" CRT Monitor

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Succesive degausinge and horisontal line-bugging

My Philips brilliance200b monitor has horisontal thin bug-lines - mostly at the middel and little above the middle of the sreen. Furthermore: Every 5-20 sec, it starts a degausing and resizeing of he visual screen. Both sympthoms appears in boot and after burn in (cold and hot electronics) I guees that, its some capasitors, that needs replacement, but I am not skilled, in detechting such bugs. Ought I just trash this monitor, or is it just a minor bug, that some electronic-guru will replace at low cost? Or it it possible that I could find and replace this component - that is: Is this problem a wellknown problem for monitors or Brilliance 201B in general? Thank you wery much. Thomas

Posted by Thomas Lund Madsen on

  • Thomas Lund Madsen Jan 15, 2007

    Thank you for this excelent piece of advise.

    I see, that my question is does not specify, what I really need to know - so I try to be more specifific:

    Judged by the symptoms:

    1 Repeated, automatic Degausing
    2 Thin black horisontal middlescrren lines

    Is it possible that the highvoltage capacitors, and ore the wireing from tre CRT to these capacitor needs replacement?

    Furthermore:

    Ought I to clean the entire inside - with isopropyle alcohol?


    Thank you were much

    Thomas

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If you do not have high voltage training, messing in a CRT based monitor can hurt you due to the high voltage risk. Detecting failed electrolytic caps is not hard. I've replaced the caps in my monitor a couple times (It's a 12 year old 21" CRT, that replaced a 10 year old 20" CRT 10 years ago), but you do need basic soldering skills. An electronics tech could probably fix this for the cost of a hand full of caps, but remember, you will need to pay for service time (skills are costly), and that will probably run 75 to 100 dollars. If you are concerned that someone may benefit from you lack of ability, then you can have the monitor diagnosed for $35.00 or so in most places, donate it to a charity that refurbishes computers for the needy, and let them fix it :), or just ride that bad boy until it dies (what I'm doing, I'm not replacing the caps a third time, I'm planing on getting a 24" widescreen LCD to replace my 21" CRT) Peace. P.D.

Posted on Jan 14, 2007

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