Viewsonic VP930 flickering problem - RMA denied

[Prismatic]

I was wondering if any VP930 owners had this issue before. After the monitor has been on for about 10-15mins certain colours on the screen begin to flicker. A vague sort of vertical line pattern can be made out in large flickering areas.

It seems I've been unlucky with this monitor and I'm currently on my 3rd one within 2 years, all with the same problem.
LCD #1 lasted 2 months, LCD #2 lasted 7 months, LCD #3 lasted 14 months, and it's still within the 3 year warranty.

When I rang up to report the problem this time the lady told me that it wasn't a fault with the unit. I pointed out that I had tried changing VGA and DVI cables, different graphics cards (both video outs), and even tried it on different PCs. She spoke to her higher ups for a bit and came back and told me that I wasn't getting a replacement. Perhaps I've hit the limit to the number of replacements they're allowed to give out.

She also said that the previous returned units were tested and found not to be faulty and that the most likely cause of the problem was due to interference from some external device like a router. Would any display experts like to comment on this?

Here's some pictures. I used a monitor test tool to show different colour gradients and it's only certain shades of green that seem to be affected, along with anything that contains green (yellow, cyan etc).


Just after power on:



After about 10mins, flickering vertical bands appear:



Red and blue are ok:



The contour lines of colour on the right are the flickering areas; TV on the left with the normal image:



Any thoughts will be greatly appreciated as I'm sitting here confused and wondering if it's time to just give up on this problematic monitor and splash out on a new widescreen model. But first I need to lie down and rest my eyes.

[edjay]

I'm curious to know what graphics card you have? Is there a major discrepency with the refresh rate capabilities of either the card or monitor?

[Prismatic]

It's a 8800GT. I usually run it at 60hz but I tested 75hz and it seems to do the same. I tried a 7600GT as well but no luck there.

[edjay]

I see they are £225 in Eclipse Computers: That's really expensive for a 19"!!

I would HARDCOPY the retailer for my money back: A Royal Mail recorded delivery complaint - They cannot ignore that. Sorry I can't be of more help. All the best.

[Prismatic]

I guess it couldn't hurt to try, although I'm not sure the retailer used Royal Mail and it was over a year ago.

Cheers anyway though.

[edjay]

I guess it couldn't hurt to try, although I'm not sure the retailer used Royal Mail and it was over a year ago.

Cheers anyway though.

Sorry, I don't think I was too clear with my last reply: By mentioning the RM, I meant that you could complain to them (The compny you bought it off.) in (Hardcopy) writing via registered post. This way, they are legally bound to respond to reasonable requests. It also gives you solid ground legally: It appears that an email carries no legal weight and a company does not need to respond with that respect in mind.