Dell Vostro 15 no charge

[dclass-pro]

Re: Dell Vostro 15 no charge

Hi all guys, the new original battery has arrived but the problem is still the same, it does not increase the charge

[dclass-pro]

Re: Dell Vostro 15 no charge

Hi guys good morning, after the various tests I didn't understand why but it doesn't turn on anymore. I tried to change the ISL95521 charger and the result doesn't change... what can I try? I saw that on pin 1 I have 2.196V and on pin 2 3.4V pin 3 and pin4 0v and on pin 5 of the KBC I have 0v... what could it depend on?

[mon2]

Re: Dell Vostro 15 no charge

Pin #1 voltage is too low which means the power adapter voltage is too low.

Pin #1 voltage should be > 2.633 volts.

[dclass-pro]

Re: Dell Vostro 15 no charge

I checked pr4452 and pr4416 and they are correct, do you have to change the value?

[mon2]

Re: Dell Vostro 15 no charge

What are the details of your power adapter?

Vout ?

Current / power rating ?

Is the adapter a Dell original?

You should not have to adjust the resistor based voltage divider but this lower voltage is a show stopper.

You can test the idea by finding an online resistor based voltage divider calculator. Then put in the actual voltage of your power adapter and start with the true resistor values for R1 and R2.

Then lower R1 till the output voltage exceeds the 2.633 volt threshold. Or increase R2 for the same reason.

Select resistor values that you have available for replacement.

Then test again with the new resistor values.

[dclass-pro]

Re: Dell Vostro 15 no charge

I confirm the original power supply, voltage 19.8V I changed the 2 resistors with PR4452 120K and PR4416 20K current voltage on pin1 2.78V and the pc turned on and the charge is also working which was the 1st problem of this laptop!! Thank you so much!!! I don't know if I solved the problem of recharging with the divider or with the change of the charger, but now everything works fine!! Thank you very much!!!!

[mon2]

Re: Dell Vostro 15 no charge

Wow - did not know that we would have to 'hack it' to work but as long as the adapter is not out of spec, good job !

Keep an eye on the adapter that it does not overheat, etc. but if it is an original, you should be fine.

[dclass-pro]

Re: Dell Vostro 15 no charge

[Korty]

Re: Dell Vostro 15 no charge

Hi new user - could make a new thread - i opened my dell inspiron 5567 p66f001 to clean the fan, but now it wont turn on. Everything seems to be connected though - any thoughts on what I might try?

[mon2]

Re: Dell Vostro 15 no charge

What are the silk screened markings on the logic board?

Is it 'LA-801P' ?

See attached. Based on this schematic for this model, measure the 3 points of interest.

Meter in DC volts scale (20V or higher). Red meter probe on point to test. Black meter probe to ground (shield is ok).

Interested in the:

a) power adapter raw voltage

b) GATE pin voltage common to drive the 2 x DCin mosfets. Mosfets are like solid state relays / switches.

c) the main power rail voltage

[rediii]

Re: Dell Vostro 15 no charge

I confirm the original power supply, voltage 19.8V I changed the 2 resistors with PR4452 120K and PR4416 20K current voltage on pin1 2.78V and the pc turned on and the charge is also working which was the 1st problem of this laptop!! Thank you so much!!! I don't know if I solved the problem of recharging with the divider or with the change of the charger, but now everything works fine!! Thank you very much!!!!

well done, this will help others for sure