This machine during normal use. Such as turning on and off after shut down the power button on the display. To screen after several seconds and only returned to normal. If only closed when shutdown panel power key, don't cut off the power supply socket. So the display engine work need time. Than the display to cut off the power supply socket after short normal work the time required to run a lot. Continue to use a few days later. Found that LCD engine work need time from the first few minutes to twenty minutes later. Display does not work completely, panel key no response. The power indicator light is not bright. JPgservice manual download site
 JPgservice manual download site
Due to the display screen at the beginning only one bright one dark, the fault is the black screen no display completely. Preliminary judgment from the failure phenomenon should be LCD power supply part of the problem. JPgservice manual download site
 JPgservice manual download site
 JPgservice manual download site
Be careful to use a word cone pry the LCD back cover, remove the front panel, discovered that the power supply for the display part is a complete power adapter. With double-sided adhesive on the display back cover (the normal machine, if it is a built-in power source type. Should be the power module). Obviously, this is a modified after different fake samsung LCD display device. The 12 v voltage is measured with a multimeter. Found only "eight v, is the power damage. Take a 12 v power adapter (editor: best buy current slightly larger than the original adaptation of Ming), in accordance with the same use super double-sided adhesive on the back cover, the display circuit is connected, close the back cover, a boot test, troubleshooting. JPgservice manual download site
 JPgservice manual download site
Summary: a bright one secretly phenomenon in a liquid crystal display, there may be a fault for various reasons, such as signal or power cord didn't answer fast, power failure caused by voltage is insufficient or lamp, high pressure plate sealing off or damage to the defective, and so on. So the case should be check after the 12 v voltage is normal or not, check voltage, aplastic anemia. Determine whether problems due to other parts. In general, a screen one bright one dark, heat engine to boot, basic certainly is the power out of the question. Check the power supply should be part of the electronic components (such as filtering capacitor) have any failure. This obstacle so pJ - if not promptly eliminate, could eventually lead and liquid crystal displays and burnt completely black screen key components. In addition, when the display when not in use, should as far as possible to cut off the power supply, which can save energy, and also can protect the monitor, avoid unnecessary aging and damage in addition to the electronic components

 2    1 2 Next Last