After assembly, the screen is no trace in the oscilloscope mode. When checking the voltage determined switch SW2 is broken, is not closed contacts 1, 2 and 5, 6 in position 10 mV. In other states the right contacts are closed.
The measured voltage:
+5V OK
-5V OK
AV+ 5V
AV- -4,97V
If the switch SW1 is GND:
V1 0V
V2 0V
V3 -1,2mV
V4 1,6V
VA 5V
VB 0,17V bad
VT 1,7V bad
Is this mean that the U3 is broken?
What type of SW2 is used?
Where to buy a SW2 and a U3?
No trace
Re: No trace
Is jumper JP9 closed?
If you want the replacement parts please contact JYE Tech at jyetech@163.com. (Note office close from Oct. 1 to Oct. 7 for holidays)
If you want the replacement parts please contact JYE Tech at jyetech@163.com. (Note office close from Oct. 1 to Oct. 7 for holidays)