We've made some progress!
The short was caused by the 6-pin diodes chip I've soldered incorrectly. Once I removed it the tester is showing some life. Thank you
stj for pointing that out.
If I press in encoder for a second, the screen flashes white.
If I press and hold encoder, I see in green text:
- Selection:
- Switch Off
- >Transistor
- Frequency
Then it goes to:
Then:
When I let go, unit turns off.
What now???
Its like something atmel not latching something to run.
Do the MC5 6-pin chip and AK1521 suppressor required to run?
I made sure pin 22 I damage is ok. But looking the board, pin 22 is not connected to GND as schematic shows.
Update:
Other thing its missing is the LED and that looks like its required for the current path for s9014. Is it correct?