My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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?
[image|3248736]
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[image|3248737]
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[image|3248738]
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[image|3248733]
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[image|3248735]
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[image|3248734]
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***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.
[image|3253026]
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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?!)
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***Update - 2024-04-29***
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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".
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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...
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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.
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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?
[image|3248736]
[image|3248737]
[image|3248738]
[image|3248733]
[image|3248735]
[image|3248734]
***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.
[image|3253026]
-
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?
+
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?!)
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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?
[image|3248736]
[image|3248737]
[image|3248738]
[image|3248733]
[image|3248735]
[image|3248734]
***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.
[image|3253026]
-
Can one say if it ***must be that chip*** causing issues if it's getting hot, or if that might be related so some of its peripheral?
+
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?
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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?
[image|3248736]
[image|3248737]
[image|3248738]
[image|3248733]
[image|3248735]
[image|3248734]
***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.
[image|3253026]
-
Can one say if it ***must be that chip*** causing issues if it's getting hot, or if that might be related so some of its periferals?
+
Can one say if it ***must be that chip*** causing issues if it's getting hot, or if that might be related so some of its peripheral?
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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?
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.
+
+
[image|3253026]
+
+
Can one say if it ***must be that chip*** causing issues if it's getting hot, or if that might be related so some of its periferals?
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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?
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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 0.1A.
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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?
My 840 G6 doesn't turn on anymore, regardless if I plug in the original charger or a 100W USB-C PSU.
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 0.1A.
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?