A tech can charge a lot of money for lg tv repair godstone an LCD display, laptop LCD, a TELEVISION or simply about any display.
While restoring an FLATSCREEN, you need to take care about a whole lot of factors. It is a too costly thing so even a tiny manhandling can cause you losses as you might have to pay the customer whose device has been damaged by you. You should also handle the LCD very carefully and repair or solder the circuits very carefully.
In case of the Laptop LCD displays, the most problems are with the power source or the main board. You should learn about the key components employed in the monitors and how the ability supply works. There are some major components involved and the essential design is the same for all companies. Right now there is a little distinction.
Once you have opened the monitor or TV SET for repair purposes, you should first identify the various components you can see. Once you have done this, you should identify the component or the section that has a problem. After this you can easily use the testing devices like multimeter to check the problem and then use your solder or replace any burnt or sedentary component. The Recession time is the perfect time to get some serious Talent. You can Understand how to repair in a few days.
This Acer AJ17 Monitor came in with the complaint of wide screen and bias (line swimming) across the vertical line of the display. Although you can modify the horizontal size, you just can’t make it into smaller and the horizontal size still big and curve back to the inside. You could also clearly see all the up and down lines at the screen have a tiny wave (distortion) across it. At first I think it was caused by a defective filtration system capacitor at secondary side of the display but all the capacitors examined to be okay.
Since all the caps examined okay, now I completely concentrate on the horizontal size and pincushion signal area. If there are any components shorted or faulty in this field, it will cause the display to go big (wide) and many times you can’t tune it in return to normal size. From experienced, generally the problem was the modulation diode who have shorted or a pincushion transistor which have leaked. But both components and all the local circuit components checked to be okay too. Using high voltage probe to test on the anode voltage proved it to within the right range. Regarding your information, if the holddown or safety capacitor capacitance value out it could also cause the display to turn big however the high voltage measured at the pluspol cap would be higher.
Since all the suspected components measured okay, I would then use voltage testing to locate the fault. Just before doing the voltage test, I observed that the eeprom ic is installed just beneath the picture tube. If any eeprom ic in any monitor located under the belly of the CRT, then chances are high the data would be corrupted by the discharge of the CRT.