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the right method to fix lcd

by:Fuyuang     2019-12-27
Repairing the LCD screen power adapter is simpler than the CRT display power supply.It\'s really small and compact, and usually only has a 12 volt result, ranging from 2 amps to 4 amps or more.Quite a few creations have 18 and 24 V Plus.
At present, many LCD power supplies are usually developed on boards such as the hp Pavilion G60 LCD screen, because the elderly are definitely separated as power modules.Repairing the LCD screen power adapter is simpler than the CRT display power supply.It\'s really small and compact, and usually only has a 12 volt result, ranging from 2 amps to 4 amps or more.
Quite a few creations have 18 and 24 V Plus.At present, many LCD power supplies are usually developed on boards such as the hp Pavilion G60 LCD screen, because the elderly are definitely separated as power modules.The energy pack module type is easy to help detect because you can simply replace another unit of work to make sure that it may be the power pack that caused the problem.
You can also use an external DC power supply to help with the switch on the LCD to verify that your power supply is defective.If you don\'t have an external DC power supply, you can usually take this solution to isolate the problem, especially if the signal usually has no power supply, low energy and flashing power supply.When using the rear bulb (12 V) from the car, also connect it to the power output jack.
If it\'s bright, then the power pack is actually correct.If this flashes or even darkens, there is a problem with the power supply group at the moment.Why on earth should this approach be used for testing?Just because if the element on the LCD motherboard is short-circuited or leaked, it will affect the overall performance of the power supply.
From experience, almost all LCD power supply problems, whether in the power pack or in the motherboard, are due to the failure of the electrolytic capacitor (most likely caused by heat) within the main and secondary sections.Many capacitors have a very large ESR, causing the power supply to provide low output, flicker, or no power at all.Typical value electrolytic capacitors in the Ajajor side are typically 47 and 100 micro farad 50 volt, and the second is typically 1000 to 2200 micro farad 25 volt.
Occasionally you will notice that the capacitor\'s optimal housing will become raised and the sleeve covering the capacitor housing will become dark as Brown.The power section in most LCD screens continues to use the UC3842 pulse width modulation (pwm) ic.Compared to some power ic which is hard to get, this ic is easy to find in the market.
lp133wx1-The Tlb1 screen actually uses the TOP247F power supply ic, which of course is easy to troubleshoot when the power supply of this model fails.Quite a bit of the power pack will usually only be slightly burned, and the fuse will be replaced after cleaning up, and it will work like a brand new one.Once you understand the performance of the power adapter, it is difficult to give the LCD power adapter for trouble shooting.
If you are not sure how to troubleshoot the power adapter, I would like you to absolutely look into all my own power adapter articles on the power page.I will continue to submit more power adapter posts and would also like you to visit my website on a regular basis
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