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Search: Posts Made By: mcplslg123
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-27-2022, 11:20 PM
Replies: 24
Views: 833
Posted By mcplslg123
Re: HP Probook 450 G6

Wise decision.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-27-2022, 11:19 PM
Replies: 3
Views: 117
Posted By mcplslg123
Re: HP DA0R53MB6E0 S5_ON not present

S5_ON will come after mb switches on-so that's not your problem(very likely). Check AD_ID,flash bios as first steps.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-27-2022, 11:17 PM
Replies: 22
Views: 1,395
Posted By mcplslg123
Re: Dell Inspiron 15 5567 unknown charger

good job mate. PS_ID in dell is very simple concept and there are ways to fix it in few minutes.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-27-2022, 11:15 PM
Replies: 2
Views: 91
Posted By mcplslg123
Re: Acer Nitro 5 an515-55 dead laptop no lights

Measure the resistance on the shorted cap.Remove the shorted capacitor. re measure resistancce on the shorted cap pads. Is there a significant rise in resistance??
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-27-2022, 11:05 PM
Replies: 7
Views: 310
Posted By mcplslg123
Re: ASUS ViviBook X512F no power

It seems you have other damages as well. Start with dc-in fets voltage on S_D-G pins. Then, what is the resistance on 3v/5V coil in ohms mode?? Check resistance for 3V LDO pin.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-27-2022, 11:00 PM
Replies: 3
Views: 80
Posted By mcplslg123
Re: Dell latitude 5290 la-f401p power cycling

Does the system remains on without ram?? Adapter_ID checked??
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-24-2022, 10:56 PM
Replies: 8
Views: 179
Posted By mcplslg123
Re: Dell inspiron 3542 keyoard not working

Had a look on KBC pins and kbd connector for corrosion/liquid damage??
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-24-2022, 10:46 PM
Replies: 3
Views: 102
Posted By mcplslg123
Re: IT8585e and IT8586e compatible?

IT8585 & IT8586 are not compatible.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-23-2022, 11:07 PM
Replies: 9
Views: 327
Posted By mcplslg123
Re: Probook 640 G1 turns on when adapter connected

What i wrote about voltage transfer on Q7050 is absolutely correct. You seems not to understand it. SLP_S3_5R must be 3V in off condition and it should pull low only when turned on. So you need to...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-23-2022, 07:16 AM
Replies: 9
Views: 327
Posted By mcplslg123
Re: Probook 640 G1 turns on when adapter connected

TPS51225 is your 3V/5V PWM IC. Q7055 gate should be High so that ground(pin2) travels to source(pin3) as its a n channel mosfet. Once the ground reaches pin3, it will block P15VOA line and voltage...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-21-2022, 10:56 PM
Replies: 7
Views: 310
Posted By mcplslg123
Re: ASUS ViviBook X512F no power

I think wiser to put a fuse but do check resistance on the pad where you are getting 0 Volts.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-21-2022, 10:50 PM
Replies: 26
Views: 1,505
Posted By mcplslg123
Re: Dell E6540 starts with Jack, but not with Power Button

@new, read post#25 by OP. He has already replaced cmos cell and it was 3.3V.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-20-2022, 10:58 PM
Replies: 6
Views: 472
Posted By mcplslg123
Re: Iris BSW MB 14279-1 PWB-896X3 REV A00 SM_DRAMRST# Missing

Newer boards comes with soldered processor and ram. So why even think about it??
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-20-2022, 10:56 PM
Replies: 8
Views: 231
Posted By mcplslg123
Re: HP Zbook 15 G2 laptop won't turn off completely

This happens 'coz your VS lines are not not switched off even after turning off from windows. Check your dc-dc converter for 3V/5V VS .(U45/U46)
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-20-2022, 10:51 PM
Replies: 7
Views: 196
Posted By mcplslg123
Re: How can we prevent 19v entering SOC?

Manufacturers knows the solution and have all the know how to implement it but the fact of the matter is they dont want to do it. The aim is simple-so that it doesnt last long enough. A HP loyalist...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 11:10 PM
Replies: 5
Views: 275
Posted By mcplslg123
Re: HP 15-BW la-e831p vga problem.

What is your problem?? Turning on but no display?? If yes, then post measurements on all coils.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 11:07 PM
Replies: 7
Views: 310
Posted By mcplslg123
Re: ASUS ViviBook X512F no power

To mee it seems like a coil. Make sure whether its a coil or fuse. Remove the part and check resistance on both the pads. If the resistance is high, you can solder similar fuse/coil(located near lvds...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 11:04 PM
Replies: 2
Views: 158
Posted By mcplslg123
Re: Lenovo Legion 7 Gaming Laptop not working

You can get the chip on aliexpress but bga rework station is a must to replace this chip.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 11:01 PM
Replies: 24
Views: 833
Posted By mcplslg123
Re: HP Probook 450 G6

You dont have a dc supply?? If yes, then measure SDA/SCL/DRAMRST# on ram slot. It's very important to see activity on SDA/SCL lines and that can be observed only on DSO. If you dont have these tools,...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 10:57 PM
Replies: 6
Views: 472
Posted By mcplslg123
Re: Iris BSW MB 14279-1 PWB-896X3 REV A00 SM_DRAMRST# Missing

Check Post#2 and post your measurements. Do you have DSO??
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 10:54 PM
Replies: 1
Views: 108
Posted By mcplslg123
Re: MSI MS16J11 - no 3.3/5V

Post PU10 Voltage on all pins??
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-19-2022, 10:48 PM
Replies: 1
Views: 97
Posted By mcplslg123
Re: PWM Dimming Control Signal low voltage drop LA-E841P

LED_PWM(INVPWM) comes directly from SOC. Attach schematic if you have one for better understanding. There can be way out but you will loose brigtness adjustment control.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-16-2022, 10:49 PM
Replies: 5
Views: 275
Posted By mcplslg123
Re: HP 15-BW la-e831p vga problem.

I think removing those 3 coils will make it UMA(LA-E801P, uma works by removing these 3 coils). The board looks very similar to LA-E801P and only the platform differs-INtel Vs AMD. Are you sure where...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-15-2022, 11:11 PM
Replies: 5
Views: 275
Posted By mcplslg123
Re: HP 15-BW la-e831p vga problem.

Try removing GPU power coils.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-15-2022, 10:58 PM
Replies: 24
Views: 833
Posted By mcplslg123
Re: HP Probook 450 G6

You mean voltage or current consumption?? Are you using a dc supply to power the machine or adapter??
Showing results 1 to 25 of 500

 
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