Radeon 7000 - image 'ghosting' problem

  • Thread starter Thread starter Colin Bennun
  • Start date Start date
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Colin Bennun

I just bought a Radeon 7000 card (PowerColor 64MB DDR, p/n RV6DE-B3)
and am running it at 32 bit, 1600x1200x75Hz on a Panasync SL90
monitor.

I'm getting ghosting that looks like an echo to the right of images
that takes about 5 repeats to fade out over maybe 15mm. The display
is still perfectly usable but the false images are distracting and
make it difficult to be accurate when using eg. Photoshop.

I'm using the latest drivers from the ATI website; I tried the
powercolor website (www.powercolor.com.tw) but it wasn't much help.
Neither changing the bit depth or refresh rate removes the ghosting.
My monitor cable is extended to about 10 feet by a male-female
monitor-type cable.

I just want a clear, crisp display with no false images. Can anyone
offer any advice?

System: Athlon XP2400+, 512MB PC2600 RAM, ASROCK K7S8XE mobo, Win XP
Pro

Thanks!

Colin
 
I am pretty sure it is you monitor cable. At that resolution you need a
cable that is shielded very well. If you are using a switch box or KVM, make
sure all the monitor cables and extensions are shielded properly. If you
can't change the cable on your monitor (because it's hardwired inside), try
to get some ferrous blocks to put on your existing monitor cable. They
should have them at a local computer/electronic store.

bye, Rick
 
Colin Bennun said:
I just bought a Radeon 7000 card (PowerColor 64MB DDR, p/n RV6DE-B3)
and am running it at 32 bit, 1600x1200x75Hz on a Panasync SL90
monitor.

I'm getting ghosting that looks like an echo to the right of images
that takes about 5 repeats to fade out over maybe 15mm. The display
is still perfectly usable but the false images are distracting and
make it difficult to be accurate when using eg. Photoshop.

I'm using the latest drivers from the ATI website; I tried the
powercolor website (www.powercolor.com.tw) but it wasn't much help.
Neither changing the bit depth or refresh rate removes the ghosting.
My monitor cable is extended to about 10 feet by a male-female
monitor-type cable.

I just want a clear, crisp display with no false images. Can anyone
offer any advice?
Click to expand...


Three problems:

1) That's a high resolution and refresh rate, and typically that requires a
top-notch video cable (rarely included with the monitor). If your monitor
supported a BNC connection (it doesn't) I would have also strongly
recommended that, since I saw a huge improvement at 1440x928@90Hz when I
switched from normal HD15.

2) That's the absolute maximum resolution/refresh rate supported by the
monitor, so even a super high quality video cable may not do it for you.
Usually it's nice to have some "headroom" on the monitor, since quality
usually falls the closer to the maximums you get.

3) The ATI 7000 series does not produce the absolute clearest analog signals
at high resolution/refresh rate. I would recommend an 8500 series card for
that.

Additionally, sometimes third-party cards have inferior analog quality.
Looking at a photo of yours, that may not be the case here - but I remember
an OEM ATI-based card I got a year ago or so where the HD15 connector was
attached by a ribbon cable to the small video board, and that had noticeably
worse quality than the full ATI-produced card in the same series, which used
a "normal sized" board like the one shown for your card.

- Daniel
 
Daniel Tonks said:
If your monitor
supported a BNC connection (it doesn't) I would have also strongly
recommended that, since I saw a huge improvement at 1440x928@90Hz when I
switched from normal HD15.
Click to expand...

Oh but it does... thanks for the reminder. The search is on for a
high-quality 4m+ HD15-5xBNC cable.

Colin
 
Colin Bennun said:
"Daniel Tonks" <dtonks@sunstormADD-DOT-COM> wrote in message

Oh but it does... thanks for the reminder. The search is on for a
high-quality 4m+ HD15-5xBNC cable.
Click to expand...


Hmm, my first searches on the Panasync SL90 didn't seem to mention that
anywhere. Guess those spec pages were just incomplete. :-) You should see an
improvement in sharpness and ghosting.

- Daniel
 
Hi,

I had the exact same problem with a radeon 9200. I've been looking
in all directions and ultimately went to replace the card.

It's probably a voltage issue on the VGA out connector.

My advice to you: return the card and ask to replace it. It is
more then likely defect.
 
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