HP 15-dy0013dx doesn't Power On, Power LED Bilinking, needs help for trouble shooting

[yihuilin]

Hello Every Genuis


I have a laptop from my friend, model is "HP 15-dy0013dx" , Logic Board model is DA00P5MB6D0 REV MODEL: 0P5

this Laptop come with a BIOS Warning issue, the Keyboard CAPS LED Blinking 3 times slow, 2 times fast , don't remember exactly, someting like this, has a Meaning , also Fan will run

but I googled, people says this Meaning EC have a issue to read BIOS, so I use CHA314A programmer to read and write (wrote the same content file read from BIOS), after I flashed the BIOS, the CAPS LED doesn't blink anymore

symptom changed, after Press Power Button, Power LED Bilinking repeatly but slow, longer than a second, looks like EC powered on ,and faild, and try to power on again, only this action, FAN not run

I purchaged a Programmed EC from aliexpress, replaced, same issue

and I downloaded BIOS file from here, even I used Clean ME bios which I build , same issue
Other Person's BIOS file write to FLash, same issue

I dont have a current meter, can't tell how much is the current, but pretty sure no Shortage , just Power LED Bilinking


help me with any clue, thanks Guys

I know this place is a good place, will keep updates for this Laptop in this thread!

Thanks Again

[pc_okay]

Hello,

If you desolder bios take a Clear picture of the area maybe you move something or maybe you have a Bad solder on your chip.

[EffiSon]

Have you tried with a different ram ? if you still have a copy of your original bios dump try to verify it before soldering it back on the mother board
else request or search for a bios on the forum and try that

[yihuilin]

Hello,

If you desolder bios take a Clear picture of the area maybe you move something or maybe you have a Bad solder on your chip.

my Solder skills are pretty good, use NeoProgrammer to read and write and verify BIOS Chip working good, no issue

[yihuilin]

Have you tried with a different ram ? if you still have a copy of your original bios dump try to verify it before soldering it back on the mother board
else request or search for a bios on the forum and try that

I don't have other ram ,but this laptop have two rams , and I removed both ram to test, dont need a ram presents before BIOS warning i believe

the problem is now the laptop even dont have a speaker Warning or Caps Lock Bilinking warning , or even the CPU Fan doen't run

[yihuilin]

I forget AC Adapter in Company this weekend, i use battery tested again

With batter installed, before I pressed the Power Button, i got some voltage
VIN 12V88
+3VPCU 3V39
+BAT_RTC 3V21


after Pressed Power Button

EC ITE_5570
S5_ON 3V3 when Power LED On
+3VL_EC 3V3
+3VL_ECACC 3V3
+1.8V_DEEP_SUS 1V8 when Power LED On Resistance Good

SLP_S3# 0V Resistance Good
SLP_S4# 0V Resistance Good

i believe the CPU not even reached to S4 Level, still have some issue before quit from S4, let alone S3

I checked EC around,
> Thermal Signal was good
> LID signal was good

When I cloded the LID , the Power-Off-Power sequence sitll running, I believe the issue was in early stage

[pc_okay]

If you miss SLP4 & 3 check presence:

• DSWROK_EC
• RSMRST#
• EC_RTC_RS
• RTC Crystal

PS: i'm sure too you don't break the BIOS chip but you may have move some resistance or whatever around bios chip

[yihuilin]

• DSWROK_EC 0v
• RSMRST# 3v3
• EC_RTC_RESET YES, from Low -> HIGH
• RCT Crystal YES , WAVE Good, 33K

[yihuilin]

According Schematic Page 2, VIN and S5_ON generates 4 Power signals +3VPCU , +3VS5 , +5VPCU and +5VS5

those voltage all Presents well

[yihuilin]

Delted

---

[yihuilin]

According Schematic Page 2, VIN and S5_ON generates 4 Power signals +3VPCU , +3VS5 , +5VPCU and +5VS5

those voltage all Presents well

also ,there is NO CLK_24M_KBC

if NO 24M Clock to EC causes NO SUSON signal from EC, that make sense

anyone can tell is SUSON depends on EC firmware?

also CLKRUN# alwasy LOW, which means EC didn't work!

[pc_okay]

I'm pretty sure SUS_ON need SLP_S4 to start.
CLKRUN# => is low ON, this signal is supposed to be low on normal operation.

CLK_24M_KBC low maybe a problem, check both side of R1203 if it's present?

Check DNBSWON# too.
I'm pretty sure you PCH you need DSWROK_EC to start the SLP_S4.