How to Fix Soldering On LCD Screens In Easy Ways

Last week, I had acquired approximate 2~5 nos of defective lcd monitors daily from consumers lived in a residential area occupied by 20000 people. I’ve never got such a good harvest really. How much wages do I get from the repair only? Unbelievable! It’s $6400 roughly which calculates from average $80 x 80 nos lcd monitor.

I can tell you that about 40 percent of total defective monitors are easy to be repaired normally and the rest is a bit time consuming but it is worth to perform electronic component analyzing, testing & replacement. As soon as you got the culprit, you solder it out and substiute the new part & solder it back on the circuit board.

One of the most vital and essential techniques in servicing lcd monitor is the SOLDERING trick which will bring you quick dollars easily & quickly. I believe most repairers will agree with me.

Let check out few real soldering instances:

• Case 1: Compaq FP731 shutdown from few seconds to few minutes

Solution 1: Re-solder the feedback circuit of the ccfl inverter section C215, C216,D201, D204, R215, R246, R218, D206, C242, D210, R234, R243

• Case 2: BenQ T705 got display shutdown after power on for few second

Solution 2: Solder out 4 nos. shorted C5707 transistors and solder new transistors back.

• Case 3: Dell e151fp (equivalent to Acer FP553 Chassis) No power or power on then shutdown shortly

Solution 3: Solder out the faulty C605, C707, C703 capacitor, the faulty power ic UC3842B, faulty resistors R613, R623, R615, faulty transistor Q601, faulty diode D604= 1N4148 and fuse F601. Solder the new parts back into the circuit.

From the above examples, no matter how stern fault level of lcd monitor is, the soldering work is always concerned in repairing lcd monitor. You can find the following articles explain the basic soldering to advance soldering methods of the surface mounted devices (SMD) on our site.

1) Tools for soldering
2) Soldering safety & health
3) Photos for soldering dry joints on circuit boards
4) Fundamental soldering technique
5) Advanced Smd soldering technique
6) Quick and inexpensive SMD Re-work Solder Station

As soon as you master the soldering skills, you can execute this useful skill to repair the fault electronic component on any circuit boards. Start practicing now because practice make perfect. You can also take help of online video tutorials or YouTube that gives you a proper insight of these repairing skills.


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Keywords: SMD Re-work Solder Station

By: Lider Accessories

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