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Question about Compaq fs740 17" CRT Monitor

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Concave screen problem also

I have the same problem as Brad but I can't find a solution for it. I also have a concave screen now on my Compaq FS740 also after browsing the internet but without downloading anything in particular. Please help if you know. Thank you.

Posted by Aga Guzik on

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  • Compaq Master
  • 12,061 Answers

OK All these Compaq's have a Power Supply problem, or a Horizontal Voltage problem.. meaning they are on the way out. The SMPSU's in these units often fail along with the Horizontal Drive Circuitry. I think it is time for a new one? Repair of such a unint would barely be "Ecconomical" IMHO.

Posted on Jul 24, 2007

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0helpful
3answers

I don't know what concave means

The curve of a lens is either convex or concave, that causes light to be focused depending on the direction of the curve.

So to answer your question, concave is just a bulging 'out' shape.

dont-know-concave-means-rsx4m12fp5prszbjjw0ik22q-3-0.jpg
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Compaq Presario V4000 laptop lower volume button (just to the right of the power on/off button) stays depressed. The button is concave now instead of convex. What to do?

Does the machine have regular keys (that remove) or a "blister switch" type key pad? Have you tried to use compressed air to remove any obstruction? OR try to pry the key, very gently, up? A LITTLE silicon spray? You may have to remove the keyboard. If you use the Tray Notification Area Sound Icon to increase volume what happens?
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I have the same problem, but i didt myself

replaced the convergence ics if you have concave triple colored images on the screen.
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your tv needs to be looked at by a professional tech..it may need reconverged..
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Sony KP-53XBR35 TV Concave top & Bottom in wide screen, along with color distortion around sides

thats usually a convergence IC failure, Are you able to move the red and blue colors in the convergence adjustment menu?
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concave and colors off indicate the convergence cuircit is bad. which can be one of three boards. sorry
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Compaq monitor

OK your monitor is failing in the Horizontal circuitry.... OR the PSU is failing to supply the correct Voltages. Either way it is probably going to fail completely soon. With monitors so cheap now, here in NZ they are about NZ$20.00 - $50.00, repair isn't adviseable to do so, it would make more sense to put the Repair monies into a NEW screen... maybe time for an LCD?
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Screen Image is Concave

sony trinitron colour 29ins tv its black and white not colour but the teletext is colour
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