Re: Light bar on LCD screen


"Raventy" <ano316gamer@xxxxxxxxxxx> wrote in message
news:1156990646.426754.240440@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
heres a link to a picture as to what I mean:

http://home.comcast.net/~raventy/lcdscreen.jpg

Does the monitor have an external power supply ? If yes, I'd try it on
another one first. Also, have you checked that it's not coming from the
controller ( tried the monitor and signal cable on another computer - yes
? ) From the photo, the most likely bet would be one of the secondary
smoothing caps at the back end of the power supply. It will be something
like 1000 to 2000uF at 25v, and located just after the switching
transformer. Unless it's showing obvious signs of distress, you would need
an ESR meter to prove a problem, or at least a 'scope.

If you are not familiar with or confidant of the dangers of switch mode
power supplies, take extra care, as they are potentially lethal, once apart.
If it is an external power supply, and you prove it to be the cause of the
problem, you might want to consider just replacing it with one of the many
quite inexpensive generic ones available from the major parts suppliers.

Arfa


.

Relevant Pages

  • Re: Pc acting weird during boot up
    ... monitor, but after only 5seconds the monitor goes off again and then ... shut down however as the green led is still on and the cpu fan is ... Just cant seem to get past post mode and when it finaly does ... So while, for the most part, power supplies are swappable, there ...
    (microsoft.public.windowsxp.hardware)
  • Re: Pc acting weird during boot up
    ... monitor, but after only 5seconds the monitor goes off again and then ... shut down however as the green led is still on and the cpu fan is ... Just cant seem to get past post mode and when it finaly does ... So while, for the most part, power supplies are swappable, there ...
    (microsoft.public.windowsxp.hardware)
  • Re: How much Voltage Drop is acceptable for computers? Outdoor Desktop Office
    ... > about the lifespan of my computer's power supply or my monitor. ... Computer power supplies are often rated for 90 to 132V and usually ... Cheap power supplies often have a narrower tolerance and when you go ...
    (sci.electronics.design)
  • Re: How much Voltage Drop is acceptable for computers? Outdoor Desktop Office
    ... > about the lifespan of my computer's power supply or my monitor. ... Computer power supplies are often rated for 90 to 132V and usually ... Cheap power supplies often have a narrower tolerance and when you go ...
    (sci.electronics.basics)
  • Re: New Orleans ......... from Wikipedia
    ... > monitor, which draws considerably more then the computer does. ... > for the furnace fan motor, another 100w for the exhaust motor, 50w for ... How efficient are the transformers used to run laptop computers off regular ... AC power supplies? ...
    (rec.bicycles.misc)