Makvision 29" tri-mode and sudden red upper corner *solved*

[emuola]

Was just playing with my shiny new cab and I noticed that the upper right corner had gone red/pink when the monitor should have displayed blue there (Outrun menu).

Monitor is brand new. I had some problems earlier (few months back) with default contrast/brightness being to high and causing "splashes" in the screen. However this seems to be a lot more serious

The corner does not return to normal if I power the cabinet off

Help! Is the monitor busted? That would practically mean the end of this cabinet as the trouble of getting the beast in was something that I really don't wanna think about.

Here's the pic (sorry about the quality, but you get the picture...)

[brad808]

Look up degaussing and you will hopefully find a fix. Your monitor may have a built in degausser.

Sent from my Nexus 4

[Rigby]

Not busted.

If you've recently reoriented the cabinet, such as moving it around, that can cause this.  Every few times the monitor powers on it will degauss.  Or, if you power it off and wait 15 minutes and turn it back on, it should degauss.  There may even be a degauss trigger button on the chassis itself.  Anyway, degaussing should clear this up.

If the monitors own degauss coil isn't cutting it, then you should source an external degaussing coil and watch a video on how to do that.  It's dead simple once you see it done and it clears up most things like this.  If you have magnets (such as speakers) near the tube, try shielding the CRT from them.  It's not always needed.

Also, sometimes, folks have had luck just taping little magnets on the tube to clear these up.

[emuola]

Not busted.

If you've recently reoriented the cabinet, such as moving it around, that can cause this.  Every few times the monitor powers on it will degauss.  Or, if you power it off and wait 15 minutes and turn it back on, it should degauss.  There may even be a degauss trigger button on the chassis itself.  Anyway, degaussing should clear this up.

If the monitors own degauss coil isn't cutting it, then you should source an external degaussing coil and watch a video on how to do that.  It's dead simple once you see it done and it clears up most things like this.  If you have magnets (such as speakers) near the tube, try shielding the CRT from them.  It's not always needed.

Also, sometimes, folks have had luck just taping little magnets on the tube to clear these up.

Thanks! Actually after waiting 15 minutes and powering the beast up, the screen looks just normal  It does have "automatic" degaussing and no manual possibility to do that.

I'm really happyh that it's now "fixed", but I'm still wondering the reason... I haven't moved the cab, but I might have bumped it a little by accident when changing the network cable I was wondering if the need for degaussing could be somehow related to heat? It seems that it's pretty hot inside the cab now when it's summer here in Finland In winter the room temp wa only like ~20 degrees celsius (below 70 F) and now it's been way up to 26 celsius 80F).

Let's hope this need for degaussing is not going to be something I do everyday.

I do have speakers above  (and below) the monitor, but I haven't noticed any problems in 4 months before... So, I doubt that it's not the magnets.

[mgb]

Keep an eye on it.
But if the problem comes back, it may be due to speakers being kinda close depending on what you're using for speakers.
You monitor degaussing coil should keep it under control.
If you're using car stereo type speakers, you can try bucking magnets attached to the speaker magnet in order to correct the issue.