A photographer in a nearby store brought this LCD computer screen to my shop. The problem was a blinking stand by light when hitting the power button. After hitting the power button for 4-5 times, the screen comes on but for a while then it shuts down.
The moment I heard that from the client, I know it was a capacitor problem. The guy told me that he sent it to another repair guy but he could not figure out the problem. So I told him, I will do my best in solving this problem in this LCD monitor.
I took the cover off, and started checking for bad capacitors in the primary and the secondary sections of the power supply and all checked out ok. I moved to the high tension area of the board and I found two capacitors. They were 1000uf/25 volts. I checked them with my ESR meter and both of them gave me a high reading indicating a problem there.
I replaced both of them and rested the LCD computer monitor and it worked fine. I connected the monitor to my laptop and let it run for more than two hours and it did not shut down.
I called the customer who was really shocked that is actually worked. I asked him a question to where he sent the LCD computer monitor to be fixed. It turned out that this guy is a computer guy and has no experience in electronics repair. I gave the LCD monitor to the owner and he paid well for the repair and told me how happy he was to deal with such a guy like me. He said that he has a lot of computer monitors and a lot of electronic equipment that need to be fixed. I was so happy that he liked my worked and that more repair work coming to my shop soon.
This also gave me an idea about the computer guy who could not fix the LCD monitor. I called this guy and then I went to meet him in his shop. We talked about working together; He installs computers and I can fix things needed for his customers. I was so happy to make this deal and that my business is moving forward.