Dell precision 3520 la-e152p

[ahmarzo]

Have Dell precision 3520 laptop with nvidia graphics laptop is working fine on power but on battery mode is shutdown just after Dell logo have tried another battery and laptop charging is ok when adapter is connected.have tried another bios and when disconnect power in on condition display stays for 10 seconds and then goes off

[mcplslg123]

Re: Dell precision 3520 la-e152p

Link schematic if available. Which charging ic is used?

[ahmarzo]

Re: Dell precision 3520 la-e152p

Thanks for reply have attached the schematics and charging ic is isl88738h.i

Schematic ---> https://www.badcaps.net/forum/showthread.php?t=120898

[Vesko356]

Re: Dell precision 3520 la-e152p

Thanks for reply have attached the schematics and charging ic is isl88738h.i

Do not attach laptop schematic and/or BV in this section please!

Schematic Requests ONLY!
https://www.badcaps.net/forum/forumdisplay.php?f=41

Reminder: rules and organization of this section
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If you request/offer BIOS/schematics/boardviews, please post in the appropriate subsection, and you can link to it in the troubleshooting topic.

.

[Sephir0th]

Re: Dell precision 3520 la-e152p

PQ906 would be my first suspect. Is it somehow internal shorted?

[mcplslg123]

Re: Dell precision 3520 la-e152p

Yes, PQ906 is suspect.If its ok then check PR937/938 for resistance value, continuity between pin 1 & 2 of charging chip to PR917. Btw, is the unit displaying dell logo a bit late?If yes, then either PR937 or PR938 is out of value.

[ahmarzo]

Re: Dell precision 3520 la-e152p

Thanks you all pr 937 value was change to 100 ohms after changing it the problem has been solved.ic pin no 1 to pr917 was showing 100 ohms and pin no 2- 0 ohms.thanks again for the great support.

[mcplslg123]

Re: Dell precision 3520 la-e152p

I faced this on a dell and in my case it was resistor which changed value.Thats why highlighted that. glad you fixed it.