HP laptop board DA0R62MB6E0 REV. E

[eniac22]

I have this mainboard DA0R62MB6E0 REV. E from hp laptop, no power up no light.
I messure on PU5 this voltages

pin ---> voltage

1,2,3 -> 18.6V
4 -> 24.5V
5 -> 2.9V
6 -> 2.6V
7 -> 0V
8,9,10 -> 5.1V
11,12 -> 1.2V
13--> 12V
14, 15 --> 0V
16 ---> 6V
17 ---> 5.9V
18,19 ---> 1.2V
20 ----> 18.7V

also on all pins on power button except ground i get 5V, it's normal this?
It's worth continue troubleshooting or not?

Thanks

[Techtiger]

Re: HP laptop board DA0R62MB6E0 REV. E

Mesure Voltage pin 19 KBC KB3940QF
Mesure Voltage PU9 pin 6
What are the Voltage of the battery connector

[eniac22]

Re: HP laptop board DA0R62MB6E0 REV. E

KBC pin 19 --->5.09V
PU9 pin 6 ----> 5.1V
PU10 pin 6 ----> 5.1V

Battery pin 1, 2 --->2.32V
pin 3,4 ---> 5.08V
pin 6 ---> 5V

[Techtiger]

Re: HP laptop board DA0R62MB6E0 REV. E

Change PU9 that's your 3V LDO +3.3VS5_ convertor it shouldn't output 5V LDO must be 3.3V
PU10 pin 6 Voltage?

[eniac22]

Re: HP laptop board DA0R62MB6E0 REV. E

pu10 is 5.1v, pu10 is 5.1v, i must find the same exactly chip or can i use a similar

Thanks i will try and replay

[eniac22]

Re: HP laptop board DA0R62MB6E0 REV. E

Still trying to repair this laptop

KBC pin 19 --->3.33V (prev was 5.09V)

PU9
pin 1----->19.63V
pin 6 ----> 3.33V (prev was 5.1V)
pin 10----> 4.81V
pin 11----> 5.16V
pin 12----> 5.56V

PU10
pin 1----->19.63V
pin 6 ----> 5.05V
pin 10----> 4.83V
pin 11----> 5.16V
pin 12----> 5.42V

Battery pin 1, 2 --->2.91V (prev was 2.32V)
pin 3,4 ---> 3.33V (prev was 5.08V)
pin 6 ---> 3.27V (prev was 5V)


pu5
pin:
1,2,3 -> 19.62V
4 -> 25.4V
5 -> 2.98V
6 -> 2.73V
7 -> 0V
8,9,10 -> 3.33V (prev was 5.1)
11,12 -> 2.88V (prev was 1.2V)
13--> 2.88V (prev was 12V)
14, 15 --> 0V
16 ---> 6V
17 ---> 5.9V
18,19 --->2.88V (prev was 1.2V)
20 ---->19.62 (prev was 18.7V)

I have 3.3V on power button and going to 0 when press the button but nothing happens, also i don't have a light on the power cable

[piernov]

Re: HP laptop board DA0R62MB6E0 REV. E

On HP laptops, AC adapter must be recognized before the laptop turns on, so you need to get a light on the DC-in jack.

As your 3.3V rail was up to 5V, it may have killed the EC. Probably a good idea to replace it. You can also try to flash EC ROM.

You can also check voltage on AD_ID and AD_TYPE, it's the voltage level that tells the EC what AC adapter is plugged in.

[kalilinux25]

Re: HP laptop board DA0R62MB6E0 REV. E

On HP laptops, AC adapter must be recognized before the laptop turns on, so you need to get a light on the DC-in jack.

As your 3.3V rail was up to 5V, it may have killed the EC. Probably a good idea to replace it. You can also try to flash EC ROM.

You can also check voltage on AD_ID and AD_TYPE, it's the voltage level that tells the EC what AC adapter is plugged in.

/
if you jumper the AD_ID to the +3vpcu will it get damage?

What if your not having a EC_PWROK and RSMRST#?
will it be a bios issue ? or a ENE CHIP issue?

ACIN is 3v
EC_PWROK no voltage

[mcplslg123]

Re: HP laptop board DA0R62MB6E0 REV. E

Start your own thread with full description of problem and steps you have taken so far.