i'm new to working on boards that aren't for apple laptops and can't seem to find a schematic for this 2018 hp. Its totally dead and the charging port indicator LED doesn't come on but the 19v gets to the current sensing resistor. there is a chip that is gets really warm (tps51285b). I think it's responsible for the LDO voltages.
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Re: hp envy 17m-bw0013dx no LED on charging port
Check resistances in respect to ground of all coils. Could be a bad capacitor. -
Re: hp envy 17m-bw0013dx no LED on charging port
anyone have a schematic for this model?Comment
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Re: hp envy 17m-bw0013dx no LED on charging port
Very few schematics available for the newer models unfortunately. But they usually fall in the same basic design so you can do some limited troubleshooting.
As you said, the +3.3V/5V IC is getting warm so have a look at the LDO output voltages. They are simple linear regulators with limited output current. If the voltage is low, it's usually not the IC but the load on that output. Sometimes you can get lucky and its just a shorted bypass cap, but can also be the EC itself.Comment
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Re: hp envy 17m-bw0013dx no LED on charging port
i'm not really good at finding a fault without a schematic. the VIN of the chip is only 9v and that should be 19v i'm assuming. in fact 9v is what's i'm measuring all over the boardComment
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Re: hp envy 17m-bw0013dx no LED on charging port
9V as VIN is very likely correct as NVDC technology is perhaps in use in charging circuit. resistance on +3V LDO/+5V LDO?? Measure resistance without any power connected.Comment
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Re: hp envy 17m-bw0013dx no LED on charging port
Use the datasheets for the IC's. Most of the time, the circuits in the laptops mirror what's in the datasheet. Except for Dell's.....Comment
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Re: hp envy 17m-bw0013dx no LED on charging port
hp envy 17m-bw0013dx need BiosComment
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Re: hp envy 17m-bw0013dx no LED on charging port
@niggi - bios requests are in another part of this forum. See above.Comment
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HP Envy m laptop model 17m-bw0013dx sn=5CG8258XXF Problem is no dispaly i try to me clean but still same hare is bios file Haymitch 2G MB 17888-1Comment
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Hi, any solution? Got the exact same issue. There's absolutely no measurable short on the board, no powerline, no mosfet, no cap, nothing.
Owner told, he wasn't able to turn it off anymore. As soon as he took out the battery, it never turned on again, if this is some hint.
Injecting 3.3V into VREG3 takes 1mA what looks good, but injecting 5V into VREG5 shows 25mA what looks high to me, for a machine that's turned off.
Any ideas?
Thanks a lot!
PS my board is Haymitch 4G MB 17889-1 448.0EJ11.0011 what seems to be the same, just 4GB VRAM.Comment
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Has anyone with the same symptoms taken the board out and looked at the other side??
There is a shorted cap c6701.
Unsure what it's values could be, but I will try to trace it to the nearest connected IC and look up a datasheet to hopefully identify a suitable replacement value
cheers​Comment
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The charging indicator light on my ASUS X54H laptop is always on even when the charger is disconnected.
Windows also shows ''Plugged in'' when charger is not connected.
This problem started year ago gradually, when unplugging the charger the charging light took several seconds to disappear, then minutes, and now almost always on even when unplugged for an entire day.
Strangely, before sometimes immediately when plugging in the charger the charging light went away, and later came back with it connected.
If I let battery run out and say it has 3% Windows will... -
Hi all,
I sent my ProArt Studiobook 16 OLED (H7600, 12th Gen Intel) to the local repair guys to have a very simple DC in port replaced. I sourced the part myself on accessoires-asus (french company) after struggling to find the right part in the UK. It looked completely the same to the installed part from what I can tell. Originally the only issue with the laptop was a bad / loose DC connection, and so the computer and battery acted completely normal aside from a very poor connection that would fail at certain angles. After the repair was completed I brought it home and used it for... -
Hi guys.
I wanted to purchase HP Elite x2 1012 G2 laptop but I saw that the charging port is type C and I remember Mr.Sorin from electronicsrepair on yt telling that the worse charging port for laptops is type C and on other channels I saw that they mostly fail especially HP Spectre X360, so I assume I should avoid laptops with type C charging port (dunno why) or it just depends on model?
He mentioned that laptop fail because of that port,and simply become dead,and most of the models fail because of that port. -
Hello,
i have similar problem as https://www.badcaps.net/forum/showthread.php?t=37828
QUOTED
-It works on charger (without battery connected-only charger)
-It works on battery (without charger connected-only battery)
-& it also works when plugged in battery & charger, but it's not charging the battery
//Confirming, i have same issue, but problem started from charger, centre PIN is outputing 10V+ and jumping randomly 19V
and..
QUOTE
The IC cannot maintain the input current level... -
Hi all,
I have been given a device to fix it sustained a drop resulting in two inductors ripping of aswell as the charging port along with many traces. I was hoping i could wire up a USB C breakout port as I could not find the correct port replacement online and customer needs urgently, could some help identify the pinnout it would be appreciated....
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