HP Envy x360 15-ds0004nf 448.0gb16.0011

[magneh]

Hello

Got this machine dead, no power, no charger led.
Seems the DCin has been forced reversed, and the 19V were injected to the black and yellow wires pins. suppose its charger ID pin and the other no idea.
I have 19.5V in, and 16.8V in the main rail.
No 3.3V no 5V. no shorts.

found a ripped cap i think, and a burned diode near the battery connector.
Pics attached

has someone the schematic or boardview for this?
Thanks in advance

[AL._.EX]

Re: HP Envy x360 15-ds0004nf 448.0gb16.0011

Platform?

[SMDFlea]

Re: HP Envy x360 15-ds0004nf 448.0gb16.0011

has someone the schematic or boardview for this?
Thanks in advance

https://www.badcaps.net/forum/showthread.php?t=88758
1.1.3 Motherboard model number

[magneh]

Re: HP Envy x360 15-ds0004nf 448.0gb16.0011

https://www.badcaps.net/forum/showthread.php?t=88758
1.1.3 Motherboard model number

Sorry going too fast

Machine is an HP Envy x360 convertible.
Model 15-ds0004nf
board info

Pacific Ocean Rota 15 Picassco
18747-1
448.0gb16.0011

The 3.3V and 5V regulators are also not identifiable by their marking. BABBBC and BACBAK both 20 pins ics
Does someone know what ICs are these?

Thank you all

[SMDFlea]

Re: HP Envy x360 15-ds0004nf 448.0gb16.0011

The 3.3V and 5V regulators are also not identifiable by their marking. BABBBC and BACBAK both 20 pins ics
Does someone know what ICs are these?

yes,both are silergy parts

https://www.badcaps.net/forum/showthread.php?t=90619
https://www.badcaps.net/forum/showpo...1&postcount=12

[magneh]

Re: HP Envy x360 15-ds0004nf 448.0gb16.0011

yes,both are silergy parts

https://www.badcaps.net/forum/showthread.php?t=90619
https://www.badcaps.net/forum/showpo...1&postcount=12

Thanks SMDFlea!

Got it.
Ive checked with the help of the pinout and 3.3V LDO is shorted

kb9028g is the culprit, which reinforces the assumption that DCIN was plugged reversed.

Apparently this ENE IC needs programming.
Now comes the fun part, finding it

Thermal pic of ENE kb9028g attached when injecting 2V@1A

[magneh]

Re: HP Envy x360 15-ds0004nf 448.0gb16.0011

Hey

Several weeks back I took a look at this board again.

After replacing the SIO, I still dont get the white LED on the charger port.

I have 3.3V present , and also at the power button, but no reaction.
5V is not present.

Does anyone know if the white led should turn on even if the SIO is not programmed?

Thanks

[tifouri]

Anyone has schematic and boredview of Envy x360 15-ds0004nf 448.0gb16.0011