Does it make the noise when its not plugged into VGA on computer? If it stops whistling, try a different computer. If same result on both computers, contact Viewsonic tech support or me. thanks
Most monitor problems are caused by bad capacitors on the power supply boards inside. You can open up the monitor and look for capacitors that have bulging tops or leaking/brown residue on top. The capacitors are the pop can shaped components. capacitor Google Search
Try 1. Unplugging the video cord from the back of the computer (and screen if it comes off) and plugging it back in. Sometimes it can become loose and cause a screen to have a abnormal color contrast 2. Updating the drivers to your card 3. Trying a different monitor on the computer. Mind you, if you plug in a differant monitor and the color stays the same. Check the videocards pins on the back of the card. I dont know if you gave all the info on how it became like this, so maybe it got undone and plugged back in forcably and one of them got bent? I Also if the pigment goes away. Plug the normal one back in and if its gone, great!, if its back. Try the OSD settings on that monitor. Still no luck. The monitor is junk.
From what I know, you cannot adjust the monitor at all. If you read the reviews on Amazon you will find that most folks are sorry for buying this monitor. what you can do however is to buy a desk mount (with a arm) and that way you can adjust the screen any way you require. Hope this helps a little
In some cases the unit has heating issues cause the solder on some video chips to heat and the chip will move away from contacts. Re-flowing a chip is what fixes that issue; however, it is dangerous if you do not know what you are doing.
There are some times when the chip is pushed out of a socket set on your board. I have provided a video about the issues commonly found to assist you in making a decision on how you want to approach the fix.
Source:
Best option is to use the HDMI connector to connect the DVD player (assuming your DVD player has an HDMI port). Then make sure the monitor is set to accept the input from the HDMI port.
Go to the OSD controls and locate the memory reset and execute that function. Post again for more details about your issues with this unit or call ViewSonic technical support for assistance.
Check the settings for audio volume control on the monitor side. Also, check the individual settings for the audio for applications and system sounds on the OS side. Or call ViewSonic technical support for assistance.
Check the settings of the monitor for audio volume. Also check the individual volume control setting for the applications and system sounds. Or call ViewSonic technical support for assistance.
VA2448m-LED monitor. Ensure your cables are connected securely and the input source is correctly selected. Then make sure you are sending a valid timing resolution mode to the monitor. If this fails, please call ViewSonic technical support to help resolve your issue.