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Joshua CarrollAug 31, 2025
Why is the image on my NEC MultiSync P403 Monitor unstable?
- CCarl JohnsonAug 31, 2025
If the image on your NEC monitor is unstable, unfocused, or swimming, ensure the signal cable is completely attached to the computer. Use the OSD Image Adjust controls to focus and adjust the display by increasing or decreasing the fine adjustment. Also, check to see if SURROUND is ON and check the Internal/External speaker switch.







