This is the PCB board I have, but I don't know what model it is.
The silk screen on the PCB is Q3, which seems to be a triode, but I don’t know what model it is? 43NL displayed on IC
Florence postato su October 28, 2020
Next to the inductor, I guess it’s Power MOSFET
Adan postato su October 28, 2020
IC2 should be an ldo. You can measure the voltage of C3 to determine the output voltage of the LDO? Just find a replacement, ldo is basically pin to pin, the key is the current size, ripple, etc.
Q3 is estimated to be a Pmos tube. As long as you know the principle and find a new signal, it should not be a big problem. After all, the probability of knowing the model is too small by looking at the silk screen, unless you deliberately remember it.
Cruz postato su October 28, 2020
The DA4 silk screen has a triode. Or it is a double diode.
I have never seen IC.
