Technical Support NM-A273 Z50-70 No working on AC adapter CHARGING PROBLEM

Ipart

Registered
Golden

Reputation:

Hi,
The motherboard only works well on the battery. Does not work on the power supply. The battery is not charging. When turned on, the motherboard turns off (when the battery is disconnected). I replaced the PU301. PQ301 PQ302 PQ303 PQ309 and PQ311 are ok. There is a current (20V) on the B + power supply, after starting the laptop B + is only from the battery.
 

Hosein Asadolahi

Staff member
Registered

Reputation:

Hi,
The motherboard only works well on the battery. Does not work on the power supply. The battery is not charging. When turned on, the motherboard turns off (when the battery is disconnected). I replaced the PU301. PQ301 PQ302 PQ303 PQ309 and PQ311 are ok. There is a current (20V) on the B + power supply, after starting the laptop B + is only from the battery.
i didn't understand very well . pls answer this questions :

when av mode only
b+ voltage : ?
pacin signal : ?
acprn (pin 5 od pu301) : ?
acdet voltage (pin 6 od pu301) : ?
vcc (pin 20 od pu301) : ?
 

Ipart

Registered
Golden

Reputation:

i didn't understand very well . pls answer this questions :

when av mode only
b+ voltage : ?
pacin signal : ?
acprn (pin 5 od pu301) : ?
acdet voltage (pin 6 od pu301) : ?
vcc (pin 20 od pu301) : ?
Sorry for late answer
when ac mode only
b+ voltage : 19V
pacin signal : 3,3V
acprn (pin 5 od pu301) : 0V (resistance to GND 67k ohm)
acdet voltage (pin 6 od pu301) : 2,5V
vcc (pin 20 od pu301) : 19V

acprn should be high? it mean pu301 damaged again?
 

Ipart

Registered
Golden

Reputation:

Sorry for late answer
when ac mode only
b+ voltage : 19V
pacin signal : 3,3V
acprn (pin 5 od pu301) : 0V (resistance to GND 67k ohm)
acdet voltage (pin 6 od pu301) : 2,5V
vcc (pin 20 od pu301) : 19V

acprn should be high? it mean pu301 damaged again?
Could You look on it?
 

Hosein Asadolahi

Staff member
Registered

Reputation:

Could You look on it?
how long to turn off laptop when you switch on the laptop without battery ?
and after laptop turn off automatically when you press the switch on again laptop go on or not ?(without unplug the ac adaptor )
i want to know after laptop shutdown automatically witch voltage present or not .
you must check many voltage in both mode and find one or some voltage missing or not .
 
Who is viewing this thread?

There are currently 0 members watching this topic

Users who has read this topic

Top