Acer Nitro 5 LA-F951P Rev 1 Non Accende

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#21 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 11 April 2025, 11:39

Si scusami adesso ho capito, con resistenza da 1Ω è jumper PJ501 aperto non da nulla 0.00 volt.

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Re: Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by Google Adsense [BOT] • 11 April 2025, 11:39

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#22 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by matic • 11 April 2025, 11:53

Measure the voltages to ground on listed pins with this resistor soldered:
- On pin 5 of transistor PQ503.
- On pins 4, 5, 7, 8, 9, 11, 12, 13, 15, 16, 17, 18 of chip PU501.

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#23 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 11 April 2025, 12:06

Pin 5 PQ503: 19.34 v.

PIN 4: 0 VOLT
PIN 5: 0 VOLT
PIN 7: 3.28 VOLT
PIN 8: 3.37 VOLT
PIN 9: 0.967 MVOLT
PIN 11: 5.13 VOLT
PIN 12: 5.14 VOLT
PIN 13: 4.95 VOLT
PIN 15: 0 VOLT
PIN 16: 0 VOLT
PIN 17: 0 VOLT
PIN 18: 4.67 VOLT

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#24 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by matic • 11 April 2025, 13:20

leonemax81 wrote:...
PIN 9: 0.967 MVOLT

What does it mean?
Is it 0.967MV (M= mega) or 0.967mV (m= milli)?

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#25 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 11 April 2025, 13:24

0,967mV (m= milli) quasi a 1 volt.

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#26 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by matic • 11 April 2025, 13:43

Do you understand prefixes? :wtf:

0.967mV= 0.000967V
0.967V= 967mV
0.967MV= 967000V

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#27 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 11 April 2025, 13:45

correggo : 0,967 V= 967 mV

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#28 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by matic • 11 April 2025, 13:53

Replace the resistor PR507 (470kΩ/1%, package 0402).

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#29 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 11 April 2025, 14:20

Resistenza sostituita, chiuso PJ501, nulla non funziona, sulla resistenza PR507 PIN 1: 19.35 V. PIN 2: 0,970 V.

Edit: che tensione deve esserci sulla resistenza PR507 PIN 2: ?

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#30 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 14 April 2025, 20:52

se può servire!, tolgo il condensatore CD32 la tensione da 1.22 è presente, anche se durante l'utilizzo il pc si blocca, quindi c'è ancora qualcosa che da problemi sulla tensione 1.22.

Grazie per l'aiuto che mi state dando, questo pc mi sta facendo perdere molte ore di lavoro.

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#31 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by matic • 15 April 2025, 08:40

Try to replace the capacitor CD32.

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#32 Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by leonemax81 • 15 April 2025, 20:13

fatto ma nulla, appena saldo il nuovo condensatore non funziona.

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Re: Acer Nitro 5 LA-F951P Rev 1 Non Accende

by Google Adsense [BOT] • 15 April 2025, 20:13

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