Ok i was not answering because, just to try, i bought the pu301.
I'm still waiting but today, I don't know for what spirit of the hell, i measured again and PL302 resistance to ground... I have 3.3 Kohm.
Ideas why?
In any case pu301 is coming so i will replace that and this is it.
Patan
Member
Last Activity: 10-29-2024, 10:34 AM
Joined: 12-28-2023
Location: Lecce
-
I know it wasn't a good idea but I had no alternative, I overdid the voltage because I couldn't see the alcohol evaporate from the PCH and this board becomes more and more like garbage as I don't understand what the problem is.
In any case I was under 4v, around 3.8. but even so I'm not sure if the PCH is heating up.
The drying alcohol should be visible... I had never tried it on a PCH but it seems very little to me. could it be something else?Leave a comment:
-
I injected 1v-3v but nothing, so the desperation to know what is going on here made me put a little bit more... 4V around...
Just on highest voltages around 3.5V-4V i BARELY SEE a little bit of alcohol moving... not at all fastly...Leave a comment:
-
So, just to recap your theory:
LVDS 19V bridge to TS_GPIO
↓
TS_GPIO brings 19V and kill the EC
↓
EC killed PU301 3v chip
↓
PU301 3v chip killed the PCH
At this point, my only hope is that it's not the pch that's resisting and that there's something else shorted, right?
Where exactly can I inject the 1V/3V?Leave a comment:
-
Just to be sure, which is the PCH?
What do you recommend me to do?Leave a comment:
-
[B]ACOK ; pin # 5 [/B]0V
[B]SDA ; pin # 8 [/B]not simple to measure to ne honest[B], [/B]between 20mv-50mv[B]
SCL ; pin # 9[/B] kind of similar to pin 8, 20mv, near to 0v[B]ACOK ; pin # 5 [/B]0V
[B]SDA ; pin # 8 [/B]not simple to measure to ne honest[B], [/B]between 20mv-50mv[B]
SCL ; pin # 9[/B] kind of similar to pin 8, 20mv, near to 0v[B]ACOK ; pin # 5 [/B]0V
[B]SDA ; pin # 8 [/B]not simple to measure to ne honest[B], [/B]between 20mv-50mv[B]
SCL ; pin # 9[/B] kind of similar to pin 8, 20mv, near to 0v[B]ACOK ; pin # 5 [/B]0V
[B]SDA ; pin # 8 [/B]notLeave a comment:
-
PQB11
PIN 1-2-3: 19,6V
PIN 4: 25,5V (?)
PIN 5-6-7-8: 19,6V
PQB12
PIN 1-2-3: 19,6V
PIN 4: 25,5V (?)
PIN 5-6-7-8: 19,6V
PUB1
PIN 6: 2,65V
PIN16: 6,05V
PIN 20: 19,4VLeave a comment:
-
PU301: 0V
PL302 11ohm
What next?...Leave a comment:
-
Can you give me some starting points?
What can i check?
If necessary i have schematics and boardview (that I found here most likely...)Leave a comment:
-
Dead LA-H323P (no light) - HP 15-DW
Need help here...
I'm new on the forum and I'm not professional in electronics so i ask sorry in advance for eventual errors...
As title says, i have a LA-H323P dead.
Now, little background.
The computer was working fine, just seems that the cable of screen was dying because it had the classic color problem, sometimes green, sometimes violet, sometimes perfect, but anyway working.
When i opened it the battery was so fat that was seriously near to explode.
So i removed the battery... and turned on the notebook... that was, again, working perfectly fine.... -
Hi to everyoneLeave a comment:
No activity results to display
Leave a comment: