I took in a 40-inch TCL LCD TV model L40F19FBE. The customer mentioned that if the repair cost exceeds 200 yuan, they don’t want to proceed. (Are you sure?)
When I booted it up, the screen was white with some text visible, as shown below:
After opening the back cover, I went straight to the mainboard and used a thermal camera. I noticed that two chips, ISL24016IRTZ and ISL24837IRZ, were extremely hot. Since the customer said they wouldn’t pay more than 200 yuan, I decided to quote 600 yuan for the repair. To my surprise, the user responded: “Hey… If it can be fixed for 600, I still want it.†(Who is this guy?)
A few days later, the chips arrived. Time to get to work! I brought out the soldering station.
I applied solder paste, aligned the pins, set the temperature to 350°C and air flow to 2. To prevent reflow during heating, I used a copper wire to hold the chip in place while soldering.
I repeated the same process for the second chip. Then I cleaned the board with water and isopropyl alcohol. Wow! It looked great now.
When the moment came, I connected the power and tested it. Perfect! ! ! !
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