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Article #62

Re: Monitor distortion

#62
From: DCA
Date: Mon, 07 Jan 2008 09:15
62 lines
3923 bytes
Terry Pinnell wrote:
> "PeeCee" <abuse@local.host> wrote:
>
>   
>> "Terry Pinnell" <terrypin@dial.pipex.com> wrote in message 
>> news:mkdnn3hnk5qri353op5i5u4e2jra2flfnj@4ax.com...
>>     
>>> I've just noticed that circular objects become squashed inwards from
>>> the right, the closer they are to the right hand edge of my screen.
>>> Doesn't happen with top, left or bottom edges to any significant
>>> extent - just the right. Circle looks like a lemon. No magnetic fields
>>> in the vicinity. Degaussed anyway but made no difference.
>>>
>>> This is an HP p930 19" CRT monitor. Although a bit apprehensive about
>>> fiddling with its menu geometry options, I did play blindly with some
>>> of them, but so far in vain.
>>>
>>> Can anyone help me isolate and fix the problem please?
>>>
>>> -- 
>>> Terry, East Grinstead, UK
>>>       
>>
>> Terry
>>
>> What you describe is a non linear sweep.
>> i.e. the electron beam is sweeping across the screen at different speeds 
>> depending on what side of the screen it is at.
>> (think of the shape of a ski jump)
>> Geometry Menu options usually cover trapesoid, pincushion, barrel and 
>> parallel distortion not sweep linearity.
>> Sweep linearity is usually an internal or hidden menu adjustment , as such 
>> you are likely to need the services of a Monitor Technician.
>>
>> Under those circumstances it may well be cheaper to locate a second hand 
>> replacement, or to look at a new LCD.
>>
>> Best Luck
>> Paul.
>>
>>     
> Paul, Mike: Thanks both. Looking for documentation right now. But I
> may well reconcile myself to living with it until my well-overdue PC
> upgrade, when I may treat myself to a 22" or 24" wide screen LCD/TFT.
>
> There is a menu entry called Linearity. But it appears to be affect
> 'squashing' at top and bottom, not left and right.
>
> Any idea about this one called 'Recall'? It offers just Yes and No.
>
> Mike: As mentioned, image only distorts when it's close to right edge,
> whether  top, middle or bottom. I used a resized image so that circle
> occupies whole window, and I could then drag it around the screen.
>
> Ah - found a Visa entry dated 15th April 2005, so looks like I'm
> within the 3 years. Hopefully there's a receipt here somewhere. Visa
> shows supplier as 'MCS', and I paid �117.45. (BTW, I'm sure I saw much
> higher than prices when I googled yesterday?)
>
>   
MCS usually sell B grade or 'returns' and I was not aware that this 
still carried 3 yr warranty. Worth checking
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From: DCA <dca860MAPS@yahooMAPS.co.uk>
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Subject: Re: Monitor distortion
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