We initially suspect that the U6 is faulty. If you can find this chip, please replace it to try.
The model of U6 is HM4052. If you can't find HM4052, you can try it with another chip (ETA6002). They should have the same function.
If you are unable to complete these, please contact your seller for renovation.
Post time 2021-4-21 16:54:41