Re: Repeated short circuit. P channel mosfet keeps blowing up
Hello, greeting from Brazil.
Short on high mosfet is dangerous, not good at all. If the 19v B + arrived at 1.5V it may have damaged components in that line. For example ram. Replace the ram.
Always replace the pair of mosfets, in the case of PQ300 and PQ301.
Attention to the 1.5V line, check if there is no short
Shrimp_Green
New Member
Last Activity: 02-27-2025, 09:16 AM
Joined: 09-05-2018
Location: Gramado/RS
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Re: Acer v3-571 / la-7912p / Assistance on the circuit
Thank you very much gentlemen. My doubt was completely cleared. I am so gratefullLeave a comment:
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Re: Display problem LA-7902P
Hello, greetings from Brazil.
The ENVDD_PHC signal must be 3v.
The LCD_VCC_TEST_EN signal is for you to inject 3v (to diagnose the defect).
I'll leave a picture of the correct voltage:
...Last edited by SMDFlea; 07-31-2020, 02:49 AM.Leave a comment:
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Re: Toshiba satellite A100-149 NO POWER
Okay, congratulations on the repair.
Greetings from Brazil....Last edited by SMDFlea; 07-31-2020, 02:51 AM.Leave a comment:
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Re: Toshiba satellite A100-149 NO POWER
Hello, greetings from Brazil.
If you only have 2.7v in B + then check the PQ7! He's the Battery switch! It must be damaged!
Remove the PQ7 and connect the charger. See if you now find 19v in B + with the charger.
...Last edited by SMDFlea; 07-31-2020, 02:52 AM.Leave a comment:
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Re: HP Pavilion dv5-1160ev
Hello, greeting from Brazil.
The black screen is the memory test. This happens when the system does not boot from Hard Disk.
Try putting the HD as First Boot:
Enter Setup:
System Configuration>
Boot options>
Boot Order>
Leave the HD as first.
...Leave a comment:
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Acer v3-571 / la-7912p / Assistance on the circuit
Greetings from Brazil.
I request assistance to understand the circuit operation of this board.
Does anyone know how to tell the circuit on page 45 of the diagram? La-7912p. What does the Pre_CHG line do?
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Re: New Members - please post your introductions here
Ola a todos! Meu nome é Guilherme. Moro no Sul do Brasil.
Tenho conhecimento em eletronica, trabalho com reparo de placas de notebooks.
Espero de alguma contribuir com o fórum auxiliando os colegas e sendo auxiliado.
O tradutor do chrome funciona muito bem aqui heheLeave a comment:
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