HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

[m3g4tr0n]

hope someone can help i have a HP15-P228NA laptop that powers on to a black screen, not getting any signal even on the HDMI output.

the power led just stays lit, no sound from the speakers (beeps).

HP15-P228NA
DAY12EMB6C0 REV C
Model: Y12E

[Duranitron]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

try the basics.. test a known good memory, check all the power rail.. specially the ALW voltage. inspect the board for burned parts.. check the bios ic for vcc and rtc battery 3v and post the voltage here..

[m3g4tr0n]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

tested different memory. still nothing.

theres 3.2v on bios chip pin 8

attached some voltage measurements.

[mcplslg123]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

Flash bios first.

[Duranitron]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

this unit is using a DDR3L PC3L-12800 1600MHz SODIMM...make sure your using the correct memory module. DDR3L is a dual voltage capable memory DIMM, which supports operation at both 1.5V and 1.35V. DDR3L is also pin-compatible with DDR3! DDR3 is a single voltage capable memory DIMM, which supports 1.5V operation only.

[m3g4tr0n]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

Flash bios first.

i flashed bios. see
https://www.badcaps.net/forum/showth...642#post980642

this unit is using a DDR3L PC3L-12800 1600MHz SODIMM...make sure your using the correct memory module. DDR3L is a dual voltage capable memory DIMM, which supports operation at both 1.5V and 1.35V. DDR3L is also pin-compatible with DDR3! DDR3 is a single voltage capable memory DIMM, which supports 1.5V operation only.

used the same spec memory.

[Duranitron]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

did you repair the laptop? what is the status..

[m3g4tr0n]

Re: HP15-P228NA Black Screen (DAY12EMB6C0 REV C)

Not yet. It worked for less than 5 minutes.

See here when I flashed the bios what happened.

https://www.badcaps.net/forum/showthread.php?t=87547