Fluorescent lights, other monitors, or electronic appliances such as coffee makers and copy machines.Earth magnetism usually distorts only the edges of the screen. Metal objects affect the earth’s magnetic field.
These distortions are usually not visible on monitors with smaller screens. B parts for Main Deflection Board, Microprocessor Controller Board, and Power Supply.
APPLE IMAGE CAPTURE NOT SCANNING THE LAST PAGE SERIAL
To distinguish the two versions, check the last three digits of the serial number. B version offers improved performance and better screen resolution. K Service Source Apple Multiple Scan 20 Display Apple Multiple Scan 20 Display Apple Multiple Scan 20 Display, Rev.