• Asus X515E - brak podświetlenia matrycy

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#21 Re: Asus X515E - brak podświetlenia matrycy


by krzysztof000 16 June 2025, 21:54
Czyli te dwa pady połączyć drutem miedzianym i spokój ? :)

Re: Re: Asus X515E - brak podświetlenia matrycy


by Google Adsense [BOT] 16 June 2025, 21:54

#22 Re: Asus X515E - brak podświetlenia matrycy


by matic 16 June 2025, 23:34
There is no fuse used at this location for no reason. The fuse provide over current and short circuit protection.
In this case the fuse protect the motherboard and LVDS cable in case the LCD screen goes bad and also protect the motherboard and LCD screen in case the LVDS cable goes bad.

0Ω resistor is not a fuse and acts differently. It's true that it can blow if the current is exceeded, but this current is much greater then the rated current of this fuse. It also reacts much slower compared to a fuse. For the reasons stated, the 0Ω resistor offers only a very limited level of protection.

Copper wire is also not a fuse, but behaves similarly under overload with a difference in a response time. But provided that the copper wire used is of appropriate cross-section. For these reason, copper wire offers a limited level of protection.

How you replace this fuse is up to you, but a new fuse costs 1-2 zlotys, which is practically nothing compared to the price of the board.
If you are going to use wire anyway, let me emphasize again that the cross-section of the used wire is crucial.

#23 Re: Asus X515E - brak podświetlenia matrycy


by krzysztof000 17 June 2025, 06:18
OK, rozumiem.

Znalazłem taki bezpiecznik do kupna, czy się nada:

Producent: ESKA
Typ bezpiecznika: topikowy
Prąd znamionowy: 3A
Napięcie znamionowe: 32V
Charakterystyka bezpiecznika: superszybki
Montaż: SMD
Zdolność wyłączania: 50A
Obudowa: 0603
Spadek napięcia: 0,14V

#24 Re: Asus X515E - brak podświetlenia matrycy


by matic 17 June 2025, 07:58
krzysztof000 wrote:Charakterystyka bezpiecznika: superszybki
This could be a problem, as it could happen that such a fuse would react too quickly and blow for no particular reason due to the inrush current.
A standard fast acting fuse is originally used here.

Do you have a part number or data sheet of this fuse?

#25 Re: Asus X515E - brak podświetlenia matrycy


by krzysztof000 17 June 2025, 09:58
Oznaczenie producenta: FUSE 0603-FF PW 3A0

#26 Re: Asus X515E - brak podświetlenia matrycy


by matic 17 June 2025, 10:31
There is no information about the react time for this fuse, or at least I can't find it.

If you are looking for fuses on TME, I would recommend ERBRE3R00V or TR-0603FA3-R, which are regular fast-acting fuses with acting time 0.1-0.2s at triple rated current.

#27 Re: Asus X515E - brak podświetlenia matrycy


by krzysztof000 17 June 2025, 10:50
Tak, szukam bezpieczników na TME.

Re: Asus X515E - brak podświetlenia matrycy


by Google Adsense [BOT] 17 June 2025, 10:50

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