Help me 19V is missing on mosfet on LA-G07JP rev 2.0

[kotar]

I change the same N ch mosfet nothing happen and i also change Charger ic nothing happen when i jumper Pin 5 to pin 1 19v Comes out and also 3V and 5V comes out power switch can on but 0.044 amp on DC Supply where can i check please

[Techtiger]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

Your ACDRV is missing GATE voltage must be high 22-28V+
Check resistance ACDRV CHARGING IC
Check resistance Diode mode
Source-Gate
Source-Drain
Gate-Drain
of both the dc-in fets
Voltage on PDB1 3 pins
Uploaded the schematic in Schematic section

[mcplslg123]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

Besides following the suggestions by @techtiger, report back on status of ACOK/ACDET

[ktmmotocross]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

replace both mosfets. if one is bad power will not pass first mosfet

and as it is HP u will need to check function of PS ID circuit

as u r using PSU that way it will not work if u dont have right resitance custom power cable

[kotar]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

Hello sir, PDB1 Pin no.1 has 19v Pin2 has 1.2v ?? Pin 3has 19v Sir

[kotar]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

Your ACDRV is missing GATE voltage must be high 22-28V+
Check resistance ACDRV CHARGING IC
Check resistance Diode mode
Source-Gate
Source-Drain
Gate-Drain
of both the dc-in fets
Voltage on PDB1 3 pins
Uploaded the schematic in Schematic section

Thanks Sir now i check as you say sir, PDB1 Pin1 has 19v pin2 has 1.2v pin3 has 19v sir ( the coil PLZ3 has shock to ground sir )
ACDRV resistor (PRB9) has 4.1K sir
DC IN Fets PQB11 and PQB12 were good
Where do i check sir

[kotar]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

Besides following the suggestions by @techtiger, report back on status of ACOK/ACDET

ACOK=0V
ACDET=2.6V sir

[kotar]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

replace both mosfets. if one is bad power will not pass first mosfet

and as it is HP u will need to check function of PS ID circuit

as u r using PSU that way it will not work if u dont have right resitance custom power cable

Yes, sir! I also check with the right powercable sir. also check and also change both mosfets sir

[Techtiger]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

Your ACDRV is missing GATE voltage must be high 22-28V+
Check resistance ACDRV CHARGING IC
Check resistance Diode mode
Source-Gate
Source-Drain
Gate-Drain
of both the dc-in fets
Voltage on PDB1 3 pins
Uploaded the schematic in Schematic section

test the PQB13 SDG diode modes and PRB1 diode mode, and upload the measurements. Also, check the voltage of PUB1 pin 16

[kotar]

Re: Help me 19V is missing on mosfet on LA-G07JP rev 2.0

test the PQB13 SDG diode modes and PRB1 diode mode, and upload the measurements. Also, check the voltage of PUB1 pin 16

pqb13 S to D = open, S to G = open, S to D = open
when remove fet and test S to D = open , S to G = open , S to D = short with 0 (Buzzing sound)
PRB1 with diode mode = 0.00 and (buzzing sound)
PUB1 pin 16 = 5.92 V
what should i do sir
Thanks for helping me sir