EEPROM stands for Electrical Erasable Programmable Study Only Memory and also referred to as E²PROM. As the title suggest, an EEPROM can be each erased and programmed with electrical pulses. Because it can be each electrically written into and electrically erased, the EEPROM can be quickly programmed and erased in circuit for reprogramming without removing them from the circuit board.

EEPROM is also known as a non-volatile memory because when energy is turned off the stored data in the EEPROM will not be erased or intact. New EEPROM have no data in it and generally have to program with a programmer before it can be use. Information stored in this type of memory can be retained for many years without a constant energy supply.

What is the perform of EEPROM? EEPROMs are utilized to store user programmable information these kinds of as: -

? VCR programming information
? CD programming information
? Digital satellite receiver manage data
? User information on various consumer goods

EEPROM in keep track of performs two functions:

? When a keep track of is change on it will copies all data or information from the EEPROM to the microprocessor. For example, the EEPROM will allow the microprocessor know the frequencies at which the keep track of is going to operate.

? The EEPROM is utilized to store the present settings of the keep track of. The settings of the keep track of will not be erased even when the keep track of is turned off. Whenever a change is created in the keep track of settings, the microprocessor updates the setting in the EEPROM. When the keep track of is turn on once more, the stored settings are utilized to set up the keep track of for operation.

What are the signs and symptoms if the Monitor or TV’s EEPROM data is corrupted or broken?

? No high voltage (no display).

? Horizontal or vertical frequencies operate.

? Can’t conserve (store) present setting.

? Certain manage functions like sound, brightness and contrast manage does not working.

? On Screen Show (OSD) does not perform or the OSD have a corrupted display.

? High voltage shut down (EEPROM set the horizontal frequency way too reduced or twice the line frequency maybe top to failure of the horizontal output transistor (Hot)).

What is an EEPROM programmer or copier?

EEPROM seldom fail, they just lose or have their memory (data) corrupted might be due to high voltage and static discharge from a keep track of. Once reprogrammed they are as good as new. As mentioned earlier, new EEPROMs are blank and need information or data to be loaded in order for it to functions. The task of copying the data into an EEPROM is carried out by a programmer or a copier. Programmers arrives in all shapes and sizes. You can duplicate these devices for fix substitute only. You cannot duplicate them for resale without a letter of approved from the vendor who created them. There is really a number of businesses selling EEPROM programmer:

Typical EEPROM part no:
24C02, 24C04, 24C08 etc
24C325, 24C645AT17C65, AT17C128 etc
93C06, 93C46, 93C56, 93C66 etc
25010, 25020, 25040 etc

Jestine Yong is a electronic repairer and author. For more information about electronic fix make sure you go to his website at http://www.noahtec.com