Prblm - not turning on
Action-
Put DC supply amp. -.001
Stand multimeter and check
Vin section ✅
3v/5v coil voltage not generate(✖️)
Check IC requirment and jump PSL LOGIC
Found 2 mosfet
Q2706(n-channel)
Q2702(p-channel)
Q2702 mosfet gate is high
So,
Not trigger this mosfet
🔙 trace this circuit
I found
Q2705 (n-channel) mosfet
GATE voltage 👍
But not trigger mosfet
Then,
Change q2705 mosfet
3v / 5v coil voltage ok
Board is trigger on
& come display
👌 ✅
