Question about Acer AT3705-MGW 37 in. LCD Television

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AT3705-MGW I'm using the AT3705 with Vista Media Centre and when I try and set the resolution to 1920x1080 @ 30hz the TV has blurry lines across the screen. It's the same with all frequencies from 20hz to 30hz. I have it connected with a DVI cable and the sound is on external speakers. I have reinstalled Vista on multiple occasions, I have bought different video cards (previously had an nvidia 6200, the on board X300 and an 8600GTS to test and still the same thing. I've also tried the latest and older nvidia/ati drivers. I have tried plugging my gaming computer into it which has Vista Home Premium 64-bit and it does the same thing when set at 1920x1080 @ 20-30hz The highest res it works on without the blurred lines is 1360x768 @ 60hz. My boss has exactly the same TV (bought at the same time) with the same operating system with older components and his works at 1920x1080 @ 30hz resolution without any problems. Please find a screenshot of the problem here: -it was taken with an 8MP camera using a tripod. Any help would be appreciated.

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Re: AT3705-MGW

Increase your signal frequency to 60hz. You may have to lower your resolution also.

Posted on Feb 10, 2010

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We have a LG42lx6500. when you turn it on after being off for a few hours the picture colour is distorted for a couple of minutes before correcting. At times you can see the individual pixels. Sometimes...


Make sure TV is on the correct channel or input. Check the cables for correct routing from TV to any other devices. Check cables to ensure they are tight and secure.

An analog signal converted to high defintion resolution will cause lines, blurriness or fuzziness in the picture. Change the resolution to a lower or native setting using the media device (cable box, DVD,). This may be an issue that requires a service call to cable provider.

A problem on one channel may just be a error on that channel. If using an antenna, it might need to be adjusted in order to ensure good signal strength. For digtal channels, go into TV Menu. Check the DTV signal. Weak signal can cause picture distortion.

If another device is being used such as a cable box, DVD player or VCR switch between devices and test picture. Check routing of cables that are used to control the image. This should be a series of red, white and yellow cables.

If a VCR with a cable box, make sure the VCR and TV are set to the correct channels for video signal to pass through. If problem is still occuring, try another set of cables. bad cables can cause picture distortion.

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