hp probook 430 g4 DA0X81MB6E0 rev:E

[poweron]

hi, a liquid has entered this notebook, I have noticed some signs of oxidation on some chips, I have cleaned up the affected part, when I connect the adapter it turns on immediately without pressing the on / off button the caps lock and number lock keys emit 5 long flashes and then the fan starts to turn to maximum, if I press on / off it turns off, then the next time it is turned on it flashes as mentioned above, any idea?
thank you

[mon2]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

https://h30434.www3.hp.com/t5/Notebo...on%20your%20PC.

[mcplslg123]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

No one can give advise based on symptoms only. You need to give measurements, details the steps you have taken etc etc. A good detailed description with measurements will always get attention and response.

[SI3MAR2000]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

this MB:HP 440 G4-DA0X81MB6E0 REV E does not turn on but when I put the multimeter to PWRBTN# and plug in the charger and press the button it turns on. if I turn it off and remove the multimeter, it does not turn on. anyone have a solution please.

[mon2]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

Review the charge capacitor @ C313. Replace it and test again. The value is not critical so any value, even 22uf, etc. is ok.

[SI3MAR2000]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

I changed C313 it didn't work, I also changed Q36 and Q37 nothing.

[mon2]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

Measure the voltage to ground of PWRBTN#.

Measure while the switch is open.

Hold down the power switch and measure again.

Release the switch and measure again.

Post each measurement.

[SI3MAR2000]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

I found when I do the same thing with the multimeter on BAT_GRNLED# or AMBER_BATLED# or LIMIT_SIGNAL. The pc turns on but all the voltages are good except VCCGT.

[SI3MAR2000]

Re: hp probook 430 g4 DA0X81MB6E0 rev:E

nobody has a solution, the last thing i found all the voltages are fixed just AMBER_BATLED# which fluctuates between 3.09 and 3.42 V. the resistors are good on this line.

[R15 King]

Привет всем точно такая же проблема как у человека выше, но никаких следов залития
я купил ноутбук уже с такой проблемой, CapsLock и NumLock мигает прошивка изменила ситуацию только то что горит индикатор питания и все индикаторы, гудит сильно кулер и ничего не грузится, если есть какие идеи или спец прошивки буду очень рад почитать

English !

Hello everyone, exactly the same problem as the person above, but no traces of flooding
I bought a laptop with this problem, CapsLock and NumLock are blinking, the firmware changed the situation only in that the power indicator and all indicators are on, the cooler is buzzing loudly and nothing is loading, if you have any ideas or special firmware, I will be very glad to read