Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
FS1 is possibly a "Polyswitch" style solid state fuse, a PTC resistor. They have that case style with the notched ends.
Does it read as a low value when you test it with a multimeter? It should be low ohms (single digits) or fractions of an ohm.
That style is normally self-resetting, they go back to normal when the overload is removed.
Some laptops do have a conventional miniature wire fuse in the power input circuit. The ones I've seen in that application look like a miniature axial resistor.
Greetings Merudo, my laptop dell inspiron 15 7559 it happened the same as yours, I saw your comments on this page and another, but even with that I could not resolve, because I do not know what the MOSFET transistor exactly on the motherboard , if you have some images available and some way to guide what I should do, I would thank you brother.
Q7 in the diagram is on page 57 of that schematic, in a block labelled "brightness power".
I can't find a clear enough photo of a motherboard to identify individual components, but the LCD connector looks to be clearly labelled on the motherboard. Q7 is quite possibly somewhere near that connector, as it feeds power directly to the last four pins of the LCD connector (at the opposite end to any pin 1 ID marking against the connector).
If you still cannot find it, can you take some good photos so the component identification is clearly readable? Someone on here may then be able to spot something.