Digital Technology

This monitor Acer AJ17 came with the complaint, the big screen and the distortion (swim line) on the vertical line of the screen. While you can adjust the horizontal size, you can not make smaller and the horizontal dimension is still large and curve inward. You can also delete all the vertical lines on the screen a little wave (distortion) on them. At first I thought it was caused by a defective filter capacitor in the secondary side of the screen, but check all the capacitors in order. Like all caps tested OK, now I must concentrate fully on the horizontal size and pincushion circuit area. If there are issues or short break in this area, it is to go to the display size (width) and many times you can not return to optimal size. From experience, mainly the problem was that the modulation of the diode short-circuit or a transistor coil resigned. But two components and all are controlled in a closed circuit as well. With the high voltage probe on the anode voltage test, it was found in the correct range. For your information, if the security setting or value capacitor capacity could also lead to the screen is big, but also the high voltage to the anode of the CAP would be measured later. Like all components measured suspicion agree, I can check with the power to locate the error. Just before the blood test, I noticed that the IC EEPROM is installed directly below the picture tube. If EEPROM IC is to control everything under the belly of the CRT, the chances are high that would be damaged by the discharge of the CRT. If you fix some of the latest models of Samsung monitor, you will understand why, because the Samsung monitor was a piece of foil to the microprocessor and EEPROM IC discharge protection. A damaged EEPROM data sheet could create micro-processor to output a wrong signal to some or all circuits. If it’s a bad signal to the circuit DPMS, the monitor turns off when the power is sent. The IC 24C08 EEPROM Acer AJ17 was part number. I used to have EEPROM data well in my hard disk, keep it for future use in case it is necessary to reprogram the EEPROM IC. I took the EEPROM IC card and plug the middle connector of the serial EEPROM programmer Pony-Prog. I can connect to the serial port on my computer and start looking for quality data for this model. I always know a lot of data EEPROM Acer Monitor IC. Once I got it, I replace the old data with good data. Re-install the EEPROM IC lasted a while, and the monitor was turned “ON”. Guess what? Not only the horizontal dimension is now back to normal, the bias in the vertical lines also disappeared. You’d better believe it, which could cause a corrupted EEPROM IC many strange symptoms. Some monitors have been scheduled when the EEPROM IC, although the monitor to work, the color can go. Some technicians are responsible for modifying the code in the data and adjust the color is good. To make the new data EEPROM reprogrammed more, you can block a piece of the shield to the loss of data EEPROM IC in the future. observed to reflect that Bare eeprom data loss occurs, not only in, it can happen in other electronics such as LCD monitors, TV, UPS, etc, and if the repair or ACER AJ17 another brand of monitors, if you encounter strange problems, you can not solve, try to reprogram the EEPROM IC and who knows, the monitor can get back to work. To do this, of course you need a serial number that you can easily buy a programmer from the Internet.

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