Dell Inspiron 15 7567

[Gaboorigin]

I have a dell laptop and it was working well and suddenly it turned off and when i tried to turned on it appears a blue screen saying ACPI Bios error i searched and disassembly the laptop and i found that the PL900 conductor was burned so i need to change it but i dont know with which one should i change it here is the picture of how it is (The laptop is with a technician friend mine) but i dont know the Voltage amp and ohm and size should i look for. Please help me i have some motherboards to look around if you need pics of the coductors, resistors and stuffs

[mon2]

Re: Dell Inspiron 15 7567

No picture was posted.

List or take pix of any markings on the logic board so it can be identified.

[JaroTech]

Re: Dell Inspiron 15 7567

Hi, the PL900 in the schematic is a high current ferrite chip bead, its number is HCB2012KF-121T50. I hope this will help you.

[reformatt]

Re: Dell Inspiron 15 7567

Value of the choke isn't all that important, it's primarily a filter to suppress noise from the GPU back onto the main rail. You could just steal a choke off another board really. It's a common enough failure on this model due to a shorted bypass capacitor after the coil. Replace the defective cap and put on a new coil and you are good to go.

[Gaboorigin]

Re: Dell Inspiron 15 7567

Hi, the PL900 in the schematic is a high current ferrite chip bead, its number is HCB2012KF-121T50. I hope this will help you.

This is helping a lot so i could find something similar in some motherboard i have around AWESOME

[Gaboorigin]

Re: Dell Inspiron 15 7567

Value of the choke isn't all that important, it's primarily a filter to suppress noise from the GPU back onto the main rail. You could just steal a choke off another board really. It's a common enough failure on this model due to a shorted bypass capacitor after the coil. Replace the defective cap and put on a new coil and you are good to go.

So any inductor would make it work? Or i need to look something specific cus i didnt find any other PL900 on the boards i was looking

[reformatt]

Re: Dell Inspiron 15 7567

Ferrite beads differ from regular coil inductors, so they are spec'd differently. Rather than inductance, they spec them as impedance (in this case 120 ohms) when the bead is saturated. DC current still has minimal impedance, but any noise has a resistance of 120 ohms. Any switching noise from the 1.35V buck converter is thus prevented from spilling out onto the 19V main rail.

So you are looking for a ferrite bead used in a similar position (i.e. feeding a buck converter) on another donor board. 120 ohm rating and 0805 size is nominal, but something close to it will do.

[piernov]

Re: Dell Inspiron 15 7567

Current rating for the ferrite bead is the most important specification if you don't want it to burn again.
Also the impedance is specified at a certain frequency, in most cases 100 MHz.

[Gaboorigin]

Re: Dell Inspiron 15 7567

No picture was posted.

List or take pix of any markings on the logic board so it can be identified.

I think i attached the image correctly

[mon2]

Re: Dell Inspiron 15 7567

Yes, the pic and above details are good.

Part is a ferrite bead

120 ohms, 2012 size, 5A rating.

From where do you source your parts?

This should be available from Mouser, Digikey, Arrow and other electronic shops.

[Gaboorigin]

Re: Dell Inspiron 15 7567

Yes, the pic and above details are good.

Part is a ferrite bead

120 ohms, 2012 size, 5A rating.

From where do you source your parts?

This should be available from Mouser, Digikey, Arrow and other electronic shops.

A local electronic store sells the part but they say are "Generic" they dont have the model but it is 120ohm, 2012, 5A should i buy these? i speak spanish so they told me "carbon resistor" so idk if should i buy it

[66nakyoz]

Re: Dell Inspiron 15 7567

Hi All,
after reading all your posts I ordered the bead from china and changed it.
After disassembling the board there was neither a burn nor something anormal to see.
Changed the ferrit bead but no change.
Still the windows installation stops at the same point when seeing the first logo.
Has anyone another suggestion how to solve this damned problem?
Thx in advance.

[sk1087]

Re: Dell Inspiron 15 7567

Hello all together,

did you order the component "HCB2012KF-121T50_0805" and happen to have any left? I'm interested in buying some from you.

Thanks for your reply