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Search: Posts Made By: mcplslg123
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-23-2021, 11:06 PM
Replies: 5
Views: 104
Posted By mcplslg123
Re: Acer E5-571G Compal_LA-B162P

What is the problem?? can you describe a bit??
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-23-2021, 11:00 PM
Replies: 10
Views: 282
Posted By mcplslg123
Re: Dell Vostro 15 VEGAS/TURIS SKL/KBL 15341-1 short circuit

Its not that tough also to solder NCP81382. You need good quality flux though.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-23-2021, 08:21 AM
Replies: 14
Views: 204
Posted By mcplslg123
Re: EPV51 LA-G078P MB CPU too hot..

Thats not enough. You need to check SDA/SCL/RESET/SPD and many more. You will have 1.2/0.6V even when reset is missing on ram circuit.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-23-2021, 08:16 AM
Replies: 5
Views: 104
Posted By mcplslg123
Re: Acer E5-571G Compal_LA-B162P

AFAIK, you cant disable intel HD Graphics. Btw, default display is from nvidea.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-23-2021, 08:14 AM
Replies: 16
Views: 272
Posted By mcplslg123
Re: hp pavilion 15-cs006nl

Yes, there is risk of damage while measuring. You need needle sharp probes to do this.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-21-2021, 06:21 AM
Replies: 14
Views: 204
Posted By mcplslg123
Re: EPV51 LA-G078P MB CPU too hot..

You dint followed all the steps listed at post#5. You can always check ram requirement without a schematic. Use any other schematic with similar ram module. If you dont want to do basic checking, no...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-20-2021, 10:47 PM
Replies: 16
Views: 272
Posted By mcplslg123
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-19-2021, 10:57 PM
Replies: 16
Views: 272
Posted By mcplslg123
Re: hp pavilion 15-cs006nl

Ok, if this is the right connector then check VADJ and BLON pins for voltage. Check carefully is it no display or dimm display on internal screen.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-19-2021, 10:52 PM
Replies: 22
Views: 450
Posted By mcplslg123
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-19-2021, 10:46 PM
Replies: 14
Views: 204
Posted By mcplslg123
Re: CPU too hot..

caps around cpu will show very low resistance and if you measure in diode mode, your multimeter will always beep. But that's not short. Do the basic for no display case.
01. Flash known good bios...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-19-2021, 08:17 AM
Replies: 16
Views: 272
Posted By mcplslg123
Re: hp pavilion 15-cs006nl

Usually pin 27 & 28 are the two pins for INVPWR_B+(meaning 19V) on an edp connector.You can take LA-C701P schematic for reference as it too has 40pin Edp connector.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-19-2021, 08:12 AM
Replies: 4
Views: 105
Posted By mcplslg123
Re: MSI GE75 Loptop with black screen

I suggested to change the screen first assuming you have spare one with you as we always have plenty of them in stock. Now measure voltages on edp/lvds connector pins but be very careful in measuring...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 11:12 PM
Replies: 14
Views: 383
Posted By mcplslg123
Re: Hp Spectre x360 DAY0DMB2AA0 black screen

Hmm. Not sure it will work or not after desoldering one of those 2 ram chips. Never done that before.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 11:07 PM
Replies: 16
Views: 272
Posted By mcplslg123
Re: hp pavilion 15-cs006nl

Refer to any schematic with 40 pin connector and check whether you have +19V/LCD_VDD/Backlit_ON etc signals on the connector.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 11:03 PM
Replies: 9
Views: 154
Posted By mcplslg123
Re: HP Elitebook 2560p problem

Schematic available?? Check PCI_Wake signal. Try removing the lan IC. Check the enable pin on 3/5V DC-DC convertor. Most likely the enable is not removed even after shutdown. Give feedback on these...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 10:59 PM
Replies: 4
Views: 105
Posted By mcplslg123
Re: MSI GE75 Loptop with black screen

HDMI works-so the mb is posting. Only problem is internal screen not working?? It may be the LVDS cable is bad or screen is bad. First try replacing these two components. If problem remains, then you...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 10:54 PM
Replies: 10
Views: 231
Posted By mcplslg123
Re: Dell Inspiron 5520 - PQ101

@caspian, its not advised to leave that mosfet in shorted condition. Replace it. AO4409 can be replaced by 4407A/4435/4835D. Ao4423 will work but not advisable.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 10:51 PM
Replies: 6
Views: 139
Posted By mcplslg123
Re: hp 15s-fq0017na Caps lock blinking 3 slow, 2 fast

1R5 or 4R7-these are ratings for coil/resistor. Does it makes any sense to us. How do i know the coil 1R5 stands for which rail?? Resistance between different coils may vary like hell & heaven,eg,...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-18-2021, 10:43 PM
Replies: 10
Views: 184
Posted By mcplslg123
Re: Hp 840 G3 board no: 6050A2822301-MB-A01 5V, 3V missing

You should atleast mention the marking on your 3V/5V regulator IC. Measure the pins of this regulator and post here.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-16-2021, 10:33 PM
Replies: 30
Views: 490
Posted By mcplslg123
Re: HP 15-dk LA-H462P - 5 long 3 short caps blinks.

The reading is not correct due to missing gate voltage. This is just a dual channel mosfet. I think there should be an IC driving the gate of this mosfet. Yes PLA1 seems like VCCSA.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-16-2021, 10:27 PM
Replies: 14
Views: 383
Posted By mcplslg123
Re: Hp Spectre x360 DAY0DMB2AA0 black screen

You reflowed the cpu with hot air gun or Bga machine?? If it is hot air gun being used, there is high chance of cpu itself getting damaged. However, with bga machine reflow with correct profile, cpu...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-16-2021, 10:24 PM
Replies: 8
Views: 168
Posted By mcplslg123
Re: Lenovo G510 turn off when want a boot

We all learn from each other. I appreciate your devotion to our forum.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-16-2021, 10:22 PM
Replies: 22
Views: 450
Posted By mcplslg123
Re: rz09-0329 Charges only in windows and disabling controller

Seems like dry soldering somewhere in charging circuit. Put some good quality flux on charging Ic and surrounding components and gently heat a bit and check again.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-15-2021, 11:27 PM
Replies: 14
Views: 383
Posted By mcplslg123
Re: Hp Spectre x360 DAY0DMB2AA0 black screen

To check communication between cpu and ram, you can check SMBUS DATA/CLOCK on ram slot. If present, communication is very likely ok. You need DSO to be 100% sure but presence of voltage on those pins...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-15-2021, 11:25 PM
Replies: 14
Views: 383
Posted By mcplslg123
Re: Hp Spectre x360 DAY0DMB2AA0 black screen

VCCGT -you cant measure with multimeter. Still you can put your probe on this coil while powering on and there might be a slight deflection on your multimeter. that will prove there is nothing wrong...
Showing results 1 to 25 of 500

 
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