OT - Monitor problem

DelCallo wrote on 5/4/2005, 1:44 AM

Purchased a new monitor from BB. It is a 19" CRT - ViewSonic A91f+. Looked ok in the store - but they show you a slide show of stuff that wouldn't show the problem I've encountered.

My monitor has a dip or curve along the top of the screen image, a sort of lanscape version of concave pincushion. None of the geometry controls seems to address this problem. Every horizontal line in the forum display is curved downward in the middle, for instance.

Do I have a defective monitor, or am I missing something?

I do use this monitor (or will use it) to edit using Vegas, so, I hope that, while OT, this message draws a few replies and not the ire of the administrators. I do love Vegas and have followed the upgrade path from version 2 - 5.

Thanks in advance for any advice.

Caruso

Comments

JJKizak wrote on 5/4/2005, 5:46 AM

Sure doesn't sound good to me. Those lines should be perfect. They are on the LCD monitors.

JJK

Jay Gladwell wrote on 5/4/2005, 5:51 AM

Why not return it for another monitor?

gordyboy wrote on 5/4/2005, 7:53 AM

Would an unshielded magnetic source nearby cause this? Like an audio speaker being too close to the monitor?

Otherwise, I think you should return it for a replacement.

Cheers

gb

BillyBoy wrote on 5/4/2005, 10:20 AM

The technical term is linearity distortion. It used to be that all larger and better quality TV's had a pincushion adjusment, typically on the back of the set. Not as common anymore... not even on so-called "professional" monitors" <wink>

If you are overdriving the brightness or contrast or have the focus or sharpness control cranked way up you may introduce pinchusion distortion. If you have already calibrated the set, and can't get BOTH straight horizonal and vertical lines, take the set back, it probably has either a open capacitor or blown resistor.

BTW, if you have a REALLY powerful speaker too close to some poorly shielded TV's or the speaker itself is poorly shielded that can cause distortion, but it would show up as wavy or halo like distortions on the screen that would go away once you move the speaker or other magnetic field further away..

DelCallo wrote on 5/4/2005, 9:55 PM

Thanks for the replies. The only speakers close to this monitor were my two little computer speakers that were originally designed to actually hang on a monitor - but I disconnected them and moved them away from this CRT. There are controls on the front of the monitor that adjust any number of items, pincushion, horizontal/vertical size, top/bottom hook, horizontal position, but none of these affect the left to right linearity, and that definitely dips in the middle.

I guess I have to take this thing back for another - I get really tired of taking things back, but, at least, I'm not stuck with a bad monitor.

I sort of knew what the answers would probably be, but was hoping to hear something different.

Thanks for the replies.

Caruso