gl553vd

[mazenkataya]

any one can help , this laptop charging working normally ,and white led observed after power button pressed,

3.0 volt is founded on power button in keybaord
3.3 volt founded on bios chip
3.3 &5.0 power system founded any help

power consumption on power supply 0.03 mili ampere

new bios file tried the same issue.

nor cpu neither gpu & chipset get warm after power button pressed.

[mon2]

Re: gl553vd

Hi.

1) Are you using the original power adapter rated @ 120W ?

2) Laptop is charging normally but consumes 0.03 mili ampere ?

3) Without the battery, the laptop does not work with the power adapter ?

See attached.

With the power adapter connected, measure the voltages on each pin of the charger IC. Post the readings.

Most likely the fault is in the first 2 mosfets.

[myth77]

Re: gl553vd

What is the resistence on chipset? +3VO and 1VO? and do you read voltage?

[mazenkataya]

Re: gl553vd

Hi.

1) Are you using the original power adapter rated @ 120W ?

2) Laptop is charging normally but consumes 0.03 mili ampere ?

3) Without the battery, the laptop does not work with the power adapter ?

See attached.

With the power adapter connected, measure the voltages on each pin of the charger IC. Post the readings.

Most likely the fault is in the first 2 mosfets.

the voltage on pin 1 is 19 volt and on pin number 6 is 2.4 volt

the laptop is 0.03 with battery and without battery and when press power button the white led light up but nothing on display

[mon2]

Re: gl553vd

Post the voltage readings on each pin of Q8801 and Q8802 mosfet. Use only the external adapter.

[mazenkataya]

Re: gl553vd

What is the resistence on chipset? +3VO and 1VO? and do you read voltage?

please can you point me to the testing pins so that i can measure

[mazenkataya]

Re: gl553vd

Post the voltage readings on each pin of Q8801 and Q8802 mosfet. Use only the external adapter.

q8801

5,6,7,8 =19v
4=24v
1,2,3=19v

q8802

123=19v
5,6,7,8,=19
4=24v

[mon2]

Re: gl553vd

Mosfets look good.

Does this laptop work without the battery but using only the power adapter?

Is the battery a good battery?

Any liquid damage?

Post the voltage on each pin of the charger ic but connect the battery and adapter.

If the laptop fails to turn on, remove all power and check the resistance to ground of every coil on the board. These are usually grey in color and large parts.

[myth77]

Re: gl553vd



voltage and resistence please!

[mazenkataya]

Re: gl553vd

voltage and resistence please!

1v0 have 1.0 volt and resistnace is 0.064(diode mode red on gnd)
3v3 have 3.3 volt and resistance is 0.121(diode mode red on gnd)

in ohm 1v0 have37.5ohm and 3v3 have 247 ohm

notice super i/o on thermal cam have normal temp 24 degree