⟐ Commented July 25, 2025 at 23:32 MST

The only sign of life is a blinking orange LED beneath the charging port.

I tested original charger with multimeter, so that is fine. Also I checked the USB-C PSU. When I plugin a volt/ampere meter to the USB-C charger I can see the PD communication from laptop to PSU is fine: it get's up to 20V and pulls 0.4A.

I also tried to detach battery and CMOS battery, press power button for 15-30 sec then only attach power supply. Unfortunately that didn't help.

Does one have an idea what that blinking orange charger LED means? Only thing I can find online is according battery things. But that LED also blinks if if detached the battery and only provide power supply.

Are there good points to test voltage on the motherboard? Does the battery voltage pins need to have ~11V if PSU is attached?

Update - 2024-03-10:

For my feelings it's pulling to much current: 420mA with not battery attached. Feels like there is somewhere a short.

I did different measurements, but don't know how to narrow it down from here. Can someone guide me on measurements?

Update - 2024-03-14

Seems like the thunderbolt controller (or some peripheral of that) causes an issue. I tested with my fingers which chip is getting really really hot and it's that JHL7340.

Can one say if it must be that chip causing issues if it's getting hot, or if that might be related to some of its peripheral? I'm wondering if it's really shorted, as PD exchange with USB-C PSU is still working (but maybe it's not that chip doing PD exchange?!)

Update - 2024-04-29

I did a lot of reading and repair video viewing (thanks Sorin) now and decided to order a replacement chip on aliexpress as well as a cheap hot air station on amazon. After some trials on an old broken PC motherboard, I replaced that BGA chip in a fearlessly mood with the new one, with the result of "no short anymore".

Unfortunately that doesn't seem to be the only thing... Measurements on the main power rail look like the second mosfet is also shorted (0 Ohms resistance). So first mosfet gets 20V input, on the output it's gone...

So now, as I have the tools, I ordered that one on aliexpress too and will try to replace it. Will keep you updated, just in case someone stumbles over that topic here.

⟐ Answered February 23, 2026 at 15:06 MST

⟐ Answered February 02, 2024 at 10:39 MST

And i don't know how to fix it. Please help me.

⟐ Answered August 18, 2024 at 16:51 MST

⟐ Answered October 01, 2023 at 19:17 MST

Got an HP EliteBook 840 G6 with swollen battery. Is it safe to repair on my own? I've replaced non-swollen batteries, SSDs, etc before. I have the iFixit 54 Bit Driver Kit.

Because I can't close the laptop lid, it may be harder to open. I'm also worried the battery is so swollen, I won't be able to get the battery screws out.

My plan is to:

• Discharge the battery to 0% to reduce potential energy if accidentally punctured, per iFixIt video.
• Go outside near non-flammable items
• Wear fire-proof gloves
• Wear eye protection
• Remove the swollen battery and place in a fireproof bag
• Have a large bucket of water ready to extinguish any flames

How risky is this? I like having both hands and not getting burnt

⟐ Commented June 11, 2023 at 16:13 MST

⟐ Answered September 17, 2025 at 4:59 MST

⟐ Answer edited August 01, 2025 at 18:23 MST

⟐ Answered November 21, 2024 at 7:36 MST

Which suggests it's broken.

Where can I order a replacement part from?

It's soo hard to find this replacement part for my laptop.

Many thanks

⟐ Answer accepted April 18, 2022 at 21:13 MST

⟐ Answer accepted August 07, 2021 at 7:27 MST

I don't know what corrosion looks like

⟐ Answer accepted August 07, 2021 at 0:39 MST

⟐ Answer accepted August 06, 2021 at 22:15 MST

⟐ Reopened April 18, 2022 at 21:14 MST

⟐ Answer unaccepted January 08, 2026 at 3:17 MST

Translation Bengali - English

Laptop is not turning on suddenly but apps lock cancel on charging light will come on

⟐ Commented February 02, 2024 at 18:04 MST