MP4 display Huaping fault quick repair diagram
Model: Rockchip RK2606 and RK2608 solution models
Fault phenomenon:
The LCD screen shows a blurry screen, and the image cannot be seen clearly, just like a mosaic (as shown below)
Overhaul:
Everyone who has been in MyDigit for a long time knows that What’s going on
Disassemble the machine and find the SDRAM video cache chip on the motherboard (as shown below)
Use an electric soldering iron on its two rows of pins Add tin repair soldering
Troubleshooting! Is it very simple (as shown in the figure below, the display is normal)
Analysis summary:
Why is this fault prone to occur? Let’s look at the picture below, (I use the bright MP4 back shell to reflect the motherboard image)
It can be seen that the SDRAM is located on the back of the button, we press the button during operation The force is precisely on the circuit board where the SDRAM is located.
So of course the SDRAM in this position is easily soldered. This is also the direct reason why this fault is more likely to occur frequently.
