Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: Heartburn on August 04, 2004, 10:45:40 pm

Title: Please help: Toshiba 27A32 - Scrolling band of distortion?
Post by: Heartburn on August 04, 2004, 10:45:40 pm: Two nights ago I set up my 27" Toshiba 27A32 using svideo and an GeForce2MX graphics gard. After some tweaking, everything looked pretty good. I played around last night, and it looked good, too. Tonight I notice a weird 'band' which slowly scrolls from the bottom of the picture to the top, and distorts the image. When it reaches the top it disappears for a moment then comes back from the bottom again.

The distortion usually appears to be a 'bulge' to the left, and occasionally is quite severe. I checked to ensure that no major electronics were operating today but not yesterday, which might have caused interference. Here's a rough indication of what I'm seeing:

-----------------------------------------
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
<---------------------------------------< This is the band which scrolls slowly upward
<---------------------------------------<
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|

Does anyone know what could cause this? I tried a few different things to remedy the situation:

1. Turning off my air conditioner (who knows, it was worth a try)
2. Changing the refresh rate using MAME's parameters

I'm out of ideas.

Thanks!
Title: Re:Please help: Toshiba 27A32 - Scrolling band of distortion?
Post by: Witchboard on August 05, 2004, 09:52:50 am: Is this in a cabinet, or on your desk? The only thing I could think of would be what you're thinking. Make sure there aren't any fans close to the monitor and if it's in a cab, try switching off your marquee light. I'm sure one of the monitor gurus will have some better insight.
Title: Re:Please help: Toshiba 27A32 - Scrolling band of distortion?
Post by: Heartburn on August 05, 2004, 04:42:58 pm: It's not in the cabinet. The only electronics within 10' are the PC, a VCR and a DVD player, the last of which were in standby mode. Plus, they were there the previous nights when the interference was not present.
Title: Re:Please help: Toshiba 27A32 - Scrolling band of distortion?
Post by: Witchboard on August 06, 2004, 08:39:21 am: Looks like we'll have to wait for one of the more monitor savvy people to show up then. I hope you get it figured out.