PACIN Signal and Op AMP Logic Laptop No power On ENG PART-1 | La 8131p | Online Chip level Training
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- เผยแพร่เมื่อ 23 ธ.ค. 2022
- Operation Amplifier working logic and concept causing Laptop Motherboard not to turn on. Laptop not triggering problem, Laptop not turning on, Laptop no power are the most common fault in laptop repairing field. This video will explain the complete understanding of the chip level laptop motherboard troubleshooting and diagnose from the basics and help beginners in the chip level repairing to solve the chip level problems quickly and fast.
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How to solve a dead laptop motherboard case step by step can be understood in Hindi in this video.
#laptoprepairingcourse #laptex. This video explains all the possible conditions for a dead motherboard or not powering on a Laptop motherboard case with concept and logic.
It covers the 51ON logic concept that is used in the Acer laptop motherboard for triggering logic or power on logic by the power button.
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Laptops not powering on dead cases is one of the most common problems that every technician has to face while solving motherboard faults. This video will be very helpful for both beginners as well as experts in understanding the concept and logic behind laptops not powering on case faults.
How to Solve Acer No Power-Dead Laptop with the actual concept of 51ON logic. Laptop repairing training online video course.
Contact us for the detail of the Online laptop repair training course and Offline laptop repair training course by reaching us at:-
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Laptex provides the complete component as well as chip-level training with live practical on faulty motherboards to understand the application of the concept. As our slogan defines learn the logic concept.
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Join our #course module and become an expert in laptop motherboard repair. All are welcome to join our free Demo Class.
Happy Troubleshooting from Laptex.
Thank u laptex and ur team
Always welcome dear. Keep supporting and sharing our videos
Let check PR332 0ohm resistor and PQ318 sot323-3 N-mosfet of ACOFF❤
Good point... let's see what is the actual problem in the next part of the video
PQ310B is not checked and ACON also cause voltage dropping.
Yes
Good point....let's see what is the actual problem in the next part of the video
What of Removing p0310b,then pin 4 and 3 together might make the system work.thanks boss for the video
Yes... always welcome dear 😌.
i think the switching mosfet (PQ301) maybe faulty, or in ACON line.
Good point. Let's see what is the actual problem in the next part
PD103 op amp side
Let's see what is the actual problem in the next part of video.
Other mosfet pq310A or ACon or weak current from opamp.
Good point...let's see the actual problem in the next part.
you had 20 volts on t301 gate there should not 20 volts on the gate, however your method is very good
If voltage devider circuit is not completed, 301fet gate should be 20v, look closely ,that mosfet is in forward bias and the gate is connected with the source,
Correct.👍
Read the comment you will get the idea.
Sir ACON line me problem hosaktahe. ACON line pe likege he isliye voltage pass nahi horaha he.
Good point... let's see what is the actual problem in the next part of the video
Sir I can same case solve 3volt ldo line short yaah sio fault hota he to Acoff on hojaatahe
Ok good 👍
remove PD103 to cut ACON
Good point. Let's wait for the next part for detail solution
First or second MOSFET shorted with gate
Let's see the solution on the next video
i think ACON... line
Good point...let's see in next part.
What if pq310A pin 2&1 are shorted? Or leaking
Yes it could be possible....watch the next part for the solution..
Bq24737 ka ldo nahi ban Raha hai replaced ic
Check input requirements.