Question about Dell Latitude D510 Notebook

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Motherboard resistors RV2 and RV3

Can anyone help with the values of the 2 surface mounted resistors RV2 and RV3, by the charging socket on the motherboard, please?

Unfortunately, someone attempted to replace the DC socket and dislodged these 2 resistors in the process.

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  • thor918 May 11, 2010

    rustyk123, thanks for posting this!! is it 4ohm or 0.4 ohms your writing? 
     
    do you now the purpose for the resistor rv2? I just can't understand what the point is for a small resistans there.


  • bepposchnitz
    bepposchnitz Jul 17, 2012

    RV1 and RV2 are varistor for example VZ0603M260APT and the are for circuit protection against ESD, lightning bolt, inductive load

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RV1, RV2, and RV3 are capacitors. They're actually dark green in color because they're made primarily for automotive applications. If you remove one and measure it with a capacitance meter you can find the value. On a 600M/D600 I believe they're 150pF, but on other boards they may be 100pF. Digikey part numbers for them are 490-4962-1-ND for the 100pF, or 490-4767-1-ND for the 150pF. Good luck!

Posted on Aug 02, 2010

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I came across you post while trying to solve this. the rv2 might have fallen off due to design flaw. the value of rv2 is .4 ohms, just solder the two pins together and it will work perfect (better then dell's design). as for the rv3 it's value is 280k ohm this will need to be replaced.

Posted on May 29, 2009

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1 Answer

Surface resistor


Resistors are not sold by voltage, but by their resistance and the max power they can dissipate. The value is usually printed on it as a three digit number (e.g. 473 means 47000 ohms). If you cannot read anything - you said its blown - youre out of luck. You could find someone else with the same PC and look at his motherboard.
Anyway - if a resistor is blown, there is a reason for it. It is not a bomb, so it wont blow on itself. Probably something in your PC is defective, which causes the resistor to blow.

Apr 13, 2014 | ASUS Eee PC 1005HA-PU1X-BK Netbook

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I need the value for rv1 on a hannstar J mv-1 94v-0 0523 motherboard


If you don't mess up with your laptop then go to your nearest laptop repairer where you find perfect solution without any harm for your computer.

Mar 13, 2014 | PC Laptops

1 Answer

Help ID this surface mount componant


That's a burnt resistor. I would guess that is not the only part that is bad. You have a short on the board. There is no way to read the value anymore. I'm afraid you are looking at a new motherboard. For more information, please visit my website at audioserviceclinic.com. Thank you.

Dec 24, 2013 | ASUS G1SN-A1 Gaming Notebook PC

1 Answer

CHANGING THE VIDEO CARD ON HP PAVILION TX1000


Nvidia GeForce Go 6150

http://www.ebay.com/itm/HP-TX1000-laptop-motherboard-441097-001-NVIDIA-C51M-GeForce-Go-6150-AMD-DDR2-S1-/160894901951?pt=Motherboards&hash=item2576155ebf

Scroll down to the first larger photo.
(Under the green - Exhibition: )

This is a bottom view of the motherboard. Look to the right of the white Socket S1 processor socket.

http://en.wikipedia.org/wiki/Socket_S1

That is an Nvidia NF-G6150-N-A2 chipset,

http://www.ebay.com/itm/nVIDIA-NF-G6150-N-A2-BGA-North-Bridge-Chipset-NEW-/220724258873

Uses a BGA surface mount, to mount it to the motherboard.
Ball Grid Array surface mount.

To explain the BGA surface mount;

The AMD Turion 64 X2, model TL-56 processor for your laptop, uses contact pins on the bottom.
The pins go in the socket holes of the Socket S1 processor socket.
(638 pins, 638 socket holes)

With a BGA surface mount there are no contact pins, nor matching socket holes.

In place of the contact pins are Solder Balls.
In place of the socket holes are Copper Pads on the motherboard.
(They are gold plated)

The chipset is set onto the motherboard, with the Solder Balls lining up on the Copper Pads.
Heat is then applied at a SPECIFIC temperature, and LENGTH of time.

The heat melts the Solder Balls, and solders the chipset TO the Copper Pads. (Which in turn solders the chipset TO the motherboard)

More information on a BGA surface mounted device, using a BGA Rework Station,

http://www.ersa.com/art-ir-pl-650-346-1472.html

Scroll down, click on the Red -
Take a few minutes to view the IR 650 demo video

Also another method used to remove, or reflow a chipset.
Posted ONLY for reference. Not advertising for this tech, nor website,

http://www.youtube.com/watch?v=JEpnqhRYGLw

(Also check out his;
HP Pavilion dv2000 blank screen fix.....
and, HP Pavilion dv9000 blank screen fix......... )

Note how this tech PLAINLY states;
1) The heat MUST be uniform all around the chipset.
Cannot be any 'cold spots', or 'hot spots'.

2) The temperature MUST be at a specific temperature, and checked all around on the chipset.

3) When using the type of heat source the tech is using, the heat MUST be slowly withdrawn away.
This allows the chipset to cool slowly, and helps prevent cold solder joints.
(Chipset to motherboard)

MHO?
You better be GOOD to do what he is doing.

The best method hands down though, is to have it done with a BGA Rework Station.

http://h10032.www1.hp.com/ctg/Manual/c00853874.pdf

Or,

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&dlc=en&lang=en&lc=en&product=3185028&


In the list click on -
HP Pavilion tx1000 Entertainment PC - Maintenance and Service Guide

Regards,
joecoolvette

http://h10025.www1.hp.com/ewfrf/wc/product?product=3185028&lc=en&cc=us&dlc=en&lang=en&cc=us

Oct 21, 2012 | HP Pavilion TX1000Z 12.1" Touch-Screen...

1 Answer

Its not charging, may be one chip needs to be changed a pc tech man


A) So you've checked out that the AC adapter (Charger) is okay?

1) Putting out 19 Volts DC?
2) There is no problem with the cable from the AC adapter to the laptop, or power cord cable?
Wiggling the cable's while testing for Voltage shows no intermittent reading?

B) DC Power Jack on laptop (DC IN) is okay?
Positive center pin doesn't wiggle around, outside Negative shell of power jack doesn't move?
No perceptible movement?

C) What you are referring to is a sensor chip.
{Chip and Chipset are slang terms for I.C.
Integrated Circuit}

It is mounted to the motherboard in a BGA surface mount.

BGA surface mount;

Remember the old Intel Pentium 4 processors?
The processor has the pins, and the processor socket has the socket holes?

With a BGA surface mount there are no pins on the chipset.
Solder Balls take the place of the pins.

There are no socket holes. There are matching Copper Pads.

The chipset is set into place so that the Solder Balls line up with the Copper Pads.
Then a specified temperature of heat, and a specified time, is applied, and the solder balls melt, which solders the chipset to the copper pads. (Thereby soldering it to the motherboard)

http://en.wikipedia.org/wiki/Ball_grid_array

Takes a BGA Reflow machine to replace the chipset, or a tech with a really steady hand, and EXCELLENT soldering/de-soldering skills.

Finding a replacement chipset is going to be tough. Not impossible perhaps, but tough.

In this instance it is more logical, albeit not economically feasible, to just replace the motherboard.
(Yeah, I despise that too)

http://www.sparepartswarehouse.com/Toshiba,Laptop,Part,K000085470.aspx

The above is just from a quick search. You may find a better price.

For additional questions please post in a Comment.

Regards,
joecoolvette

Sep 17, 2011 | Toshiba Satellite L455D-S5976 Notebook

1 Answer

Dead set


Try taking out battery and plug in power. If it works, battery is faulty.
If not, try taking out your hard disk plug in power, if it works, hard disk is faulty.Try taking out memory card, if there's a sound, memory card faulty. If no sound, it's your motherboard that is causing the error.

Note: If machine is under warranty no need to pay for the repairs.

Apr 29, 2009 | Dell Latitude D510 Notebook

1 Answer

CPU compatability


No that would not be possible because they are different socket architecture

Nov 27, 2008 | Compaq Presario R3000 Notebook

1 Answer

Battery not charging. Power Adapter ok


DC jack issue usually.

Or a bad repair- many techs not skilled enough will wind up losing RV1,RV2 or RV3 MOV. this is so small that I had documented it on my site. The chip has no values printed on them, and are hard to find "Close-Up"

But fear not, most of the times it is simply a DC jack replacement. They are about $8 on ebay. And only a skilled tech should replace it.

How they fail?
It is a circular tri-axial ring inside, the leaf type contacts become fatigued and no longer pick up power. Or the center contacts become fatigued.

OR the jack left the factory with insufficient solder and repeated use caused it to crack.

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Don't forget to rate responses

Jul 04, 2008 | Dell Latitude D600 Notebook

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