Beginner question - Hot RT9513 chip

[Darren Hibbert]

Hi.

My Hp G6 laptop died while using it.

I opened it up and used a thermal camera on it to see if anything was getting hot. The RT9513 chip (EQ ED B1Y) which is supposedly a battery charger ic was getting hot. I ordered a new one and replaced it but its still red hot. Where should I look next?

[Darren Hibbert]

I have no idea how to identify this chip or what it does. Can anyone help?

[mon2]

RT8223MZQW

High Efficiency, Main Power Supply Controller for Notebook Computer (richtek.com)

[mon2]

Remove all power. Meter in resistance mode. Measure the resistance to ground of each and every pin on this device. Be sure of your soldering of this component; be sure that pin # 1 of the replacement matches the original; confirm the resistance of each and every pin to be sure there is no short.

[SMDFlea]

Hi.

My Hp G6 laptop died while using it.

I opened it up and used a thermal camera on it to see if anything was getting hot. The RT9513 chip (EQ ED B1Y) which is supposedly a battery charger ic was getting hot. I ordered a new one and replaced it but its still red hot. Where should I look next?

Post a link to the schematic if its available -> https://www.badcaps.net/forum/troubl...r-s-guidelines

[Darren Hibbert]

No schematic available. da0r13mb6e0 rev e

[mon2]

Are you sure the chip is RT9513?

See your other thread here:

What is this chip? EQ ED B1Y - Badcaps

Update:

Study the G4 schematic and review PU3 = RT8223.

This dual regulator creates the +3VS5 and the +5VS5 rails.

With no power to the board, measure the resistance to ground of PL20 inductor (either side is ok).
With no power to the board, measure the resistance to ground of PL23 inductor (either side is ok).

Post each measurement.

Does your board like the one below?

[Darren Hibbert]

Yeah looks like I replaced it with the wrong chip.

[Darren Hibbert]

Strange. I purchased this from eBay with the same code but it says it's an RT9513.

https://www.ebay.co.uk/itm/125556477...mis&media=COPY

[Darren Hibbert]

https://www.ebay.co.uk/itm/125556477...mis&media=COPY

[mon2]

Here is the datasheet for the RT9513:

Linear Single Cell Li-Ion Battery Charger IC (richtek.com)

At best, the Ebay listing is referencing the wrong part from Richtek. Is this part still getting hot? If yes, continue to review the other thread you have started to review the resistance to ground of each created rail by this controller. Either way, this is not a RT9513.

[mon2]

The schematic and BV pics are not from the exact board as yours. These are from the G4 model which appears to use the same controller @ PU3. Share pics of your board for this region.

If there is a need, can post the BV file I have for the G4 for your review. Is the layout the same as yours for these parts?

[Darren Hibbert]

It's still getting hot. I will do the resistance thing with the old chip.

I will contact the eBay seller.

Thank you very much for your help. Just wish I had a schematic.

[Darren Hibbert]

That looks like the same board. Photos attached. Can you send me that schematic please?

Obviously this picture has the new (wrong) chip on it

[mon2]

Review the other thread, your board may be close enough to the G4 schematic to perform the repair. From these few readings, the vendor is probably mistaken on naming this as RT9513 in the Ebay listing. Which part did you receive exactly? Are the topside markings the same as the original? If you have 'EQ' then you should have the correct replacement part.

The heating of the part is probably due to a heavier than normal load on this component. For this reason, let us continue in the other thread.

[mon2]

Good. We now have a reference that can help us proceed. See attached. First concern is the orientation of pin # 1 of this boardview of PU3 on the G4 board and compare it to yours. Let me check against the datasheet.

Update - you have soldered it correctly with pin # 1 oriented like the BV.

[Darren Hibbert]

The laptop suddenly shut down one day and was completely dead. I opened it up, connected the power jack and that chip lit up like a Christmas tree under the thermal cam. I took the chip off and ordered the new one. Fitted it and it still gets red hot when connecting the power. Laptop will not start.

[mon2]

See attached. From the angles of the pic, concerned if you are really soldering the part to the pads. Suggest to flux each side of this IC. Then take a soldering iron tip and drag it with melted solder on your tip across these pads. The iron should not be too hot that it nukes the pads(!) = bad. But hot enough that the liquid solder will wick up the gaps that are visible. You want to flood the solder between the PCB pads and each IC contact. If you short anything, flux and touch the pads again till you draw out the excess solder. In the end, you want good joints.

[Darren Hibbert]

Ok thanks

[Darren Hibbert]

Do you have the BV and schematic I can download to look at with boardviewer?