🚀 go-pugleaf

do_not_spam_me@my-deja.com wrote:

>
>
>
>Terry Pinnell wrote:
>> 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?
>
>Someone in sci.electronics.repair may know how, but also read the FAQ
>at www.repairfaq.org.  Some libraries have Sams Photofacts repair
>manuals, on paper or online.
>
>The monitor likely has a dying electrolytic capacitor in its
>horizontal sweep circuit, but an adjustment should fix the picture
>well enough for you (it has for me)  In older CRT monitors that's done
>by turning the slug in a horizontal circuit coil, but newer monitors
>handle it digitally, either though a hidden menu or with special
>equipment (Samsung's was $600, Panasonic's was homemade for $10 and
>required a program they sold for $3).  If HP won't tell you how to
>bring up any service menu, try to find the actual manufacturer by
>reading the UL registration number and looking it up at UL.com.  Some
>manufacturers, like Envision (AOC) and CTX were very good about
>providing technical information to anybody (Envision even sent out
>free service manuals by e-mail), while others are paranoid about
>consumers electrocuting themselves.
>
>Don't work on the monitor itself unless you have electronics repair
>experience, and realize that glass breakage can be much a risk as
>electric shock, so do not set the monitor upright on a bed or sofa or
>it will fall forward.  Instead set it with the screen on the bottom.
>Read all the safety precautions in the RepairFaq first.

Thanks for the follow-ups.

I was terrifically impressed with the service I had from HP today.
Half an hour ago, only about 4 hours since I first called them, I have
a replacement monitor!

The process was stressful at the outset. Two conversations, apparently
with support staff in India, were cut-off when they tried to transfer
me to 'the right department'. And then my serial number was mapped to
an entirely different HP product - apparently the numbers are not
unique! And then I was told that it was 2 years outside the 3 year
warranty period, despite having a receipt in front of me (for a 'NEW,
BOXED, P930') dated 14th April, 2005. Anyway, within minutes of
emailing them a scan of that, I had confirmation that delivery would
be within 24 hours, and that improved an hour later to today! Finally
arrived at about 7pm (it's 7.30 now).

HOWEVER, unfortunately the story doesn't have a happy ending. The
glass surface of the screen is badly blemished. There's an irregular
mark over an area of about 4cm x 4cm, towards lower left of screen. No
response to cleaning.

Here's a photo, although it's hard to see because of the reflections.
http://www.terrypin.dial.pipex.com/Images/HP-P930-Mark.jpg

I'd rather have the distortion than peering through this ;-(

I reckon I'll be asking for another replacement...

-- 
Terry, East Grinstead, UK