As soon as 2006 and 2006, the Flat screen and LCD segment of the lg tv repair nutfield industry has been reporting double to triple digit percentage clumps and has surpassed the CRT counterparts in conditions of revenue. And even with the current financial turmoil that stemmed from the housing sector, higher sales are still projected for 2008 and 2009. Industry research firm iSuppli views a total worldwide transport of 93. 4 , 000, 000 units this year regarding 112. 6 million devices next year. This very much indicates a very healthy demand for the technology.
What this means is that there’s a high likelihood of surge in demand for services relating to this particular niche, particularly, the demand for Plasma and LCD TV Repair services. A skilled TV repair person experiencing a decline in profits in CRT TV repair should look at this current boom in big screen TVs as an possibility to breath new life into his/her business. The key is getting into it while its hot.
A defective power IC, power fet breakdown when under load, high esr in electrolytic capacitor, increased in current sense resistor value, a shorted zener diode, a leaky transistor, open circuit or resistor has changed value in primary side can cause power to blink. Since for the secondary aspect, a shorted secondary diode, flyback, HOT, horizontal yoke coil, damper diode, B+ fet, an open filter capacitor, shorted IC and etc can cause power to blink as well.
Usually the things i do is to remove the B+ fet first and hook up a light bulb to distinguish whether is the primary or after the B+ circuit components that caused power to blink. However in this case, I did not place the light bulb and I directly removed the B+ fet and power on the monitor. Regarding your information, this B+ fet is the N-channel mosfet and this B+ fet is part of the boost circuit.
Right after removing the B+ fet, not only the strength didn’t blink, there was display as well and the anode voltage scans about 12 Kilo watt (a good monitor should have about 24 KV). The reason why you have 12 kilo volts is really because the boost circuit is not functioning due to the associated with the B+ fet. The display shown a tiny width and the horizontal size control is already set to the maximum (you can’t get maximum width because the pluspol voltage is merely 12 KV). You can control or set everything in the On Screen Display (OSD) except you can’t bring horizontal size to maximum.
Repairing an LCD keep an eye on should be a simple task for properly trained experts. Nevertheless, if you have the natural skills for troubleshooting most types of power equipment, then you may have the capability of successfully putting back with each other a defective LCD keep track of although you may lack the official training.
A liquid very display (LCD) monitor which is thin and flat can be used in many desktop personal computers today replacing the cathode ray tube (CRT). It is more energy efficient because it requires less lighting conditions compared to CRT’s. Other benefits associated with the FLATSCREEN monitor in comparison to CRT’s include reduced the radiation, causes less eye stress, is light weight and can save space. Typically the life of your LCD monitor is thought to last between 5 to 7 years, and considering the normal wear and tear of the unit, the part that may need replacement during its usable life is usually the backlight.