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A rainbow

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Name: TrickYAH
Date: August 18, 2006 at 03:26:29 Pacific
OS: WinXP Prof
CPU/Ram: AMD 3700+ / 2GB
Product: me.
Comment:

Hi,

Everything was fine and then i went on vacation for 3weeks, i come back and turned on my PC, to find out my monitor is completely screwed...
The picture moved a bit to the right and the colors are all **** up.. it has all the colors of the rainbow accept for the ones it should have...
Like it has fallen off the table or someone punched hard into the screen...

I tried decausing and resetting to factory settings but that didnt do much, so then i switched to an old monitor and that one worked fine...

I really dont know what happend, before i went out the house i removed all the power plugs from the wall so it couldnt be lightning...


Is anyone able to shed some light into this?

Thanks.



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Response Number 1
Name: StuartS
Date: August 18, 2006 at 05:46:28 Pacific
Reply:

The monitor shows all the signs of being subject to a strong magnetic field. You didn't leave any speakers close to it did you? They may not have had any effect while the monitor was in use, but laying idle for 3 weeks would have allowed the magnetic field to build up.

If this is the case then it should right itself eventually. Most monitors have degaussing circuits built in that operate every time the monitor is switched on. If it is badly effected it can sometimes take a few power cycles to get it back to normal.

How did you degauss it?

Stuart


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Response Number 2
Name: TrickYAH
Date: August 18, 2006 at 06:01:10 Pacific
Reply:

Well yes, i have got 4 big speaker boxes around my computer.. but the closest are atleast 1,5 meters away from the screen...
And they have allways been there so i have no idea how they could have caused it...

I also have switched it on and off a lot of times allready but not noticing any difference...

oh, and i decaused it through the screen's menu...


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Response Number 3
Name: TrickYAH
Date: August 18, 2006 at 06:08:33 Pacific
Reply:

Oh and btw, the old screen i was talking about is litteraly sitting ontop of a speaker box and has been there for a long long time and still works perfectly...


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Response Number 4
Name: StuartS
Date: August 18, 2006 at 06:50:09 Pacific
Reply:

>> And they have allways been there so i have no idea how they could have caused it...<<

As I said earlier, the automatic degaussing circuits where probably keeping things in check while the monitor was in use. Laying idle for three weeks allowed the effects to accumulate. Some monitors are more sensitive to magnetic fields than others.

The screen menu will use the internal degaussing coils which are not all that powerful. If the problem persists I would take it into a TV repair shop and ask them to degauss it for you. They will use a more powerful degaussing coil designed for the purpose. It shouldn't cost to much as there is no need to get inside the monitor and it is a ten minute job.

Stuart


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Response Number 5
Name: TrickYAH
Date: August 18, 2006 at 07:08:44 Pacific
Reply:

Ok.. well i realized while you where talking about that the monitor automaticly decauses itself when switched on.. that's the sound you hear when you switch it on, right?

Well that sound used to be on this monitor too but now it's gone.. i just hear a very soft click.. and the same thing happens when i try to decause it in the menu...
no decausing sound, only a very soft click...

So could it be the "decauser" in the monitor has just gone bad..?


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Response Number 6
Name: Mattwizz3 (by mattwizz3)
Date: August 18, 2006 at 07:19:11 Pacific
Reply:

I wouldent reccommend it but I have repaired a very old screen that had no degaussing circut (All analog knobs to change picture) it had horrible colour distortion. Grabbed a halogen lamp with a transformer in it, placed it in the very middle of the screen and switched it on. Vualla! 90% better picture, but I couldent fix the right hand bottom corner : (

Now I'm gonna make that story completely irrelivant. I'm sorry StuartS but I dont think in this case it is going to be because of magnetisim. I have 2 large 200W speakers, one within 1 metre of the screen and the other just over a metre away. My monitor has no degaus function and its colour is perfectly fine. The speakers also arent magneticaly sheilded. I baugt a 17" screen a while back to replace this dodgy 15" but when it got to me the monitor would only show green, then only green and red etc. My mate said the monitor worked perfectly a year agao when he last used it... It turns out the connection between the small circutboard and the actual tube had gone bad, eventually the screen completely stopped working.

It is probably an electrical problem. To me it dosent seem to be likely that it is a gaussing problem.

Mattwizz3 : )


Sempron 2600+ @ 2.2GHz
1Gb DDR400
Asus A7N8X-E Deluxe
200GB SATA
2X 80Gb IDE
256Mb MSI 6800 Ultra


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Response Number 7
Name: StuartS
Date: August 18, 2006 at 08:12:32 Pacific
Reply:

>> that's the sound you hear when you switch it on, right? <<

Right. A rustling sound like tissue paper being crumpled.

I would still try the degaussing though. You will never know till you try it. The halogen light trick would work because of the alternating magnetic field generated by the transformer.

When you get single colours or one colour missing it is nearly always and electrical problem - often a broken wire in the cable to the PC. What we have here is rainbow colours so doubt if it is a broken wire.

Stuart


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Response Number 8
Name: TrickYAH
Date: August 18, 2006 at 08:27:01 Pacific
Reply:

Well i just called Philips and they said it could well be that the internal degaussing coils no longer work...

They aggreed to send me a new one in a few days and take the defect one back so that's fine with me :)


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Response Number 9
Name: JimPIM
Date: August 18, 2006 at 12:22:28 Pacific
Reply:

Hi, Degauser usually makes a "Whoomping" sound. No matter how much magnetism is picked up a single deqauss cycle, auto or manual should clear it up if the source of the magnetism is removed. Magnetism causes distortion at the area that was exposed usually in a corner.

Good Luck, Jim


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Response Number 10
Name: Mattwizz3 (by mattwizz3)
Date: August 18, 2006 at 17:03:09 Pacific
Reply:

Good Job TrickYAH,
Glad it worked out for you. How old was your screen?

Mattwizz3 : )

Sempron 2600+ @ 2.2GHz
1Gb DDR400
Asus A7N8X-E Deluxe
200GB SATA / 80Gb IDE
256Mb MSI 6800 Ultra


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