Hardware Information |
What is EEPROM ?
EEPROM stands for Electrical Erasable Programmable Read Only Memory and also referred to as E²PROM. As the name suggest, an EEPROM can be both erased and programmed with electrical pulses. Since it can be both electrically written into and electrically erased, the EEPROM can be rapidly programmed and erased in circuit for reprogramming without removing them from the circuit board. EEPROM is also called a non-volatile memory because when power is turned off the stored data in the EEPROM will not be erased or intact. New EEPROM have no data in it and usually 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 steady power supply. What is the function of EEPROM?EEPROMs are used to store user programmable information such as: - ? VCR programming information EEPROM in monitor performs two functions: ? When a monitor is switch on it will copies all data or information from the EEPROM to the microprocessor. For example, the EEPROM will let the microprocessor know the frequencies at which the monitor is going to operate. ? The EEPROM is used to store the current settings of the monitor. The settings of the monitor will not be erased even when the monitor is turned off. Anytime a change is made in the monitor settings, the microprocessor updates the setting in the EEPROM. When the monitor is turn on again, the stored settings are used to set up the monitor for operation. What are the symptoms if the MONITOR or TV's EEPROM data is corrupted or damaged? ? No high voltage (no display). ? Horizontal or vertical frequencies run. ? Cannot save (store) current setting. ? Certain control functions like sound, brightness and contrast control does not functioning. ? On Screen Display (OSD) does not function or the OSD have a corrupted display. ? High voltage shut down (EEPROM set the horizontal frequency way too low or twice the line frequency perhaps leading 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 may be due to high voltage and static discharge from a monitor. 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 job of copying the data into an EEPROM is done by a programmer or a copier. Programmers comes in all shapes and sizes. You can copy these devices for repair replacement only. You cannot copy them for resale without a letter of approved from the vendor who produced them. There is quite a number of companies selling EEPROM programmer: Typical EEPROM part no: Jestine Yong is a electronic repairer and writer. For more information about electronic repair please visit his website at http://www.noahtec.com
MORE RESOURCES: Unable to open RSS Feed $XMLfilename with error HTTP ERROR: 404, exiting |
RELATED ARTICLES
Testing Capacitor-How To Test A Capacitor When Breakdown Under Load Have you ever come across power problem where onceyou switch on the power supply and the fuse blow? Youhave checked all the components in the power (primary)and secondary section and all the components seems to beok! Where is the fault? A fuse blown are usually causedby a shorted bridge rectifier, defective posistor, powertransistor or FET, shorted primary winding of switch modepower tranformer, shorted secondary diode and etc. Butin this article i'm gone to show you another secret of electronic troubleshooting tips. Laptop Security -Where'd My Laptop Go? Laptops are lovely. They are convenient, mobile, powerful and prestigious. How To Choose The Best Student Laptop? How To Choose the Best Student Laptop?Merchants are singing those three magic words again,'Back to School' and the fallout is everywhere!Just as you're getting your deep dark pre-cancerous tangoing -- you hear those words -- and it spells the end of summer. Once again we are bombarded with advertising,featuring the latest in 'teen ware' 'school ware' and'metal detector ware'. What Tablet PCs Can Do for You Tablet PCs are great. If you are a mobile person, and you have never considered getting a tablet PC in the past, now is as good a time as any to start checking them out - the technology is cutting-edge, the usability is superb, and prices are starting to drop. How To Upgrade Your PC Before you upgrade your PC hardware it's best to search all options and ask for advice. Only after this you can go and buy a new component. A Review of Brother Laser Toners Brother is right up there with HP and Samsung as one of the most sought-after brands of laser toner. The Japan-based Brother Industries was first famous for its sewing machines. Review: Implementing the Google Search Appliance in an Intranet environment Our corporate intranet is a non-framed environment with both Lotus Domino and IIS (.Net and classic ASP) applications and content. Testing Diode -The Accurate Way on How to Test Semiconductor Diode Using Multimeter Testing diodes is different from testing a resistor because you need a skill to do it. If you do not know or wrongly test a diode you will be unable to repair the equipment. Types Of Laptop Batteries Throughout the years there have been many technologies involved with notebooks, and laptop batteries are no different. There are actually three distinct notebook battery types on the market today. A Review of Refurbished Toshiba Laptops Toshiba offers a few of their refurbished laptops in the "Clearance Store" of their official website toshibadirect.com. Give Your PC a Monitor Makeover Whether you are crunching figures at a front office job or crouched over a blood and gore video game in some deep recess of your room, there is the right kind of screen available to suit your needs.Monitors are one segment where you are truly spoilt for choice. Buying / Selecting Computer Components This is the step takes the most time and consideration. Which parts do I buy? Which are best?There are many good places to buy computer parts. Expansion Cards Part 3: PCI Express In the first two installments of this series of Tech Tips, we took a look at PCI and AGP, undoubtedly the most common expansion slots in a computer today. With a few key improvements over both of these, PCI Express is destined to replace both and offer a whole new level of computer performance. Refurbished Laptop Batteries There are three refurbished laptop battery types, each named for its component materials:Nickel Cadmium (NiCad) batteries are hardly ever seen anymore. They have dismally low capacities (2000-3000 mAH) and contain heavy metals that harm the environment. Getting to Know Inkjet Printers Inkjet printers were born in the 1980s, replacing the popular dot matrix printer. Inkjet printers drop droplets of ink onto printer paper to produce text and images. Getting A New Laptop At A Great Price With all the wheeling and dealing that seems to take place on the internet at all times of the day, it can sometimes get confusing just trying to find your own deal. Finding the best price on your new laptop is most likely your highest priority at this point, but there are other important factors as well. An Introduction to HD-DVD High density digital versatile disc is a digital optical media format which is being developed. HD DVD is similar to the competing Blu-ray Disc. Ink Cartridges & Printing - Poor Print Quality Solutions Why are there faint areas or gaps in my print out?* Unlikely, but your paper may need changing due to its deterioration due to its age.* Check that the type of paper you are using in your printer matches ('Media Type') the setting in the printer software 'Main Menu' or 'Print' dialog box. A Guide To Bar Code Reader Downloads Bar code readers have proven themselves to be essential tools in modern day business. Establishments, both big and small, have started to rely on bar code readers to make their operations quicker, more convenient, and more efficient. Top Three Factors to Consider While Choosing a Data Center for Your Business Data Centers are the core of the Internet. The computer servers that power the Interne,t call Data Centers their home. |
home | site map | Contact Us |