Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
06-18-2022, 06:12 AM
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Replies: 12
Views: 361
Re: DELL 3521 PS_ID Woes
Update :
Solved one , it was PQ900 the faulty component.
+ with Dell , never try with PSU it gives me wrong voltages ( For PS id section ) .
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
06-17-2022, 09:37 AM
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Replies: 12
Views: 361
Re: DELL 3521 PS_ID Woes
Hello friends.
Problem: PS_ID isfluctuating between 0.100 and-0.150v,..Adapter Unknown. but Laptop is booting fine with adapter only... booting from battery too ...and can't charge the battery...
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Forum: BIOS Requests ONLY!
06-14-2022, 02:24 AM
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Replies: 5
Views: 1,136
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Forum: BIOS & Schematic Requests!
06-11-2022, 04:46 AM
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Replies: 2
Views: 117
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
06-10-2022, 09:39 AM
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Replies: 1
Views: 137
Lenovo 320 NM-b241 memory issue.
NM-b241 don't Power on completely , just 0.160 amp .
On board Ram
After taken some measurements , followig the power sequence PG47 , i reach only step 7...didn't find anything about step 8...at...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
06-09-2022, 04:36 AM
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Replies: 6
Views: 221
HP 15-la c701p turn on but no post
Hello friends
Model: HP 15-la c701p turn on but no post at internal and external .
All voltages are present on its coils, consumption is :
with ram = 0.342 amp
without ram = 0.331 amp
I...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-26-2022, 06:16 AM
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Replies: 9
Views: 190
Re: Acer 5741 LA-5892p not power on.
Hello again and sorry to be late....and the lap is solved
RTCBATT = D1 = 2.7v
Without PD 15 i got this voltages at the place of pin :
1 = 5.22v
2 = 4.62v
3 = 3.125v
Removing pq56/58 sitll...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-25-2022, 07:20 AM
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Replies: 9
Views: 190
Re: Acer 5741 LA-5892p not power on.
Thank you mon2...yes i read all the threads post it here to know more...and i read also yours.
Yes i know for your logic about PQ65...so pin 2 = ACOFF is 0v ...i doubt like you maybe he's shorting...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-25-2022, 06:47 AM
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Replies: 9
Views: 190
Acer 5741 LA-5892p not power on.
Hello friends , thinking was easy to fix...but :spin:
Got this Acer 5741 5742 LA-5892p that didn't power on.
When charger is plugged ,got only 7v at PR351 = P3..the 2 first mosfet are ok but i...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 08:38 AM
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Replies: 12
Views: 203
Re: Asus X550JX rev 2.0 not power on !
When i change R3037 ( 100Kohm ) , whent measure at the donar board i find 96 kohm..so it's ok but when soldered at this board and measured = 60kohm.
Seems like bad SIO as mcplslg mention before !!
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 08:06 AM
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Replies: 12
Views: 203
Re: Asus X550JX rev 2.0 not power on !
Ok
my board is Rev 2.0 but i use 2.1 BRD.
I use automatic range , so just put my meter scale at the ohm signal ( am i right ! )
pin 1 = lid_sw = 156 kohm
pin 2 = GND
pin 3 = pwr-sw =...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 07:00 AM
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Replies: 12
Views: 203
Re: Asus X550JX rev 2.0 not power on !
Thank you mon2
sorry i mean D6201 (D3201 is at another donar board)
C3037 is not populated at this motherboard
It should be pulled to ~3v due to R3037 function = yes i know that's why i change...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 03:49 AM
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Replies: 12
Views: 203
Asus X550JX rev 2.0 not power on !
Hello friends
Got this motherboard with ram buit in that didn't power on : Asus X550JX rev 2.0
No short to GND At all coils.
When i connect charger cable ( from power supply ) the lap is on ,...
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Forum: BIOS Requests ONLY!
04-28-2022, 05:49 AM
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Replies: 10
Views: 344
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Forum: BIOS Requests ONLY!
04-28-2022, 04:11 AM
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Replies: 10
Views: 344
MSI GL62M 7REX no Post.
Hello friend .
I got this lap power on but no display ( internal and extaernal).
All voltages are present , PLtrst too.
I suspect bios if someone can help.
Mine is : 16J93.3h1A , i try 16J93.324...
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Forum: BIOS Requests ONLY!
04-24-2022, 04:11 AM
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Replies: 8
Views: 423
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