Hello guys ! Often in the marketplace to promote laptop computer mainboard check card for about 600 – 1 million, and check Laptop computer by mini PCI slot. In the event you wouldn’t have the situations to purchase a check card, you may make your individual check card mainboard for 0 VND. Please information me methods to make a laptop computer mainboard check card utilizing mini PCI slot.
1. Function: Used to verify if the machine has a system reset sign or not? If not, then we proceed to repair the supply circuit on the mainboard. Makes repairs sooner and extra correct.
2 . Preparation: Put together a broken laptop computer’s WIFI card (however don’t burn the contact pins on the cardboard) + 1 LED bulb. LEDs you must use LED stickers, taken from the useless Intel mainboard, Gigabyte mainboard (the sort with LED indicator close to the RAM slot), taken from some check playing cards on AMD mainboard, or a broken check card that’s nonetheless in good situation. The benefit of LED stickers is that they’re compact, near the cardboard and look very good.
3. Implementation:
You proceed to take away all elements on the WIFI card, together with: IC, resistor, capacitor…
Discover pin 2 ( + pole ) and pin 22 ( PLT_RST# ) of the WIFI card to solder the LED on.
Determine the anode ( + ) and cathode ( – ) of the LED. To find out the optimistic pole ( + ), we proceed to regulate the analog clock to the X1 Ohm scale, put the crimson and black rods of the clock in activate every leg of the LED. If the LED is on, the place is the crimson rod of the clock positioned, it’s the optimistic pole ( + ).
Solder the anode ( + ) of the LED to pin 2 (the + pole) of the WIFI card, solder the cathode ( – ) to pin 22 ( PLT_RST# ). You should utilize a continuity meter to search out the fitting place to weld nicely.
Selfmade Laptop computer mainboard check card from WIFI card
4. The way it works
After we plug the do-it-yourself laptop computer mainboard check card into the mini PCI slot, the three.3v supply will go to pin 2 of the cardboard after which by the optimistic pole (+) of the LED we simply made. The adverse pole (-) now additionally has 3.3v as a result of the system Reset sign (PLT_RST#) can be powered by 3.3v. Due to this fact the LED shouldn’t be polarized correctly so it doesn’t mild up.
When the Southbridge chip sends a Reset sign (PLT_RST#) by connecting this pin to floor for a break up second. Proper now, on the adverse (-) finish of the LED from 3.3v all the way down to the bottom, making the LED ahead biased, the LED glows. However as a result of the South bridge solely connects this pin for a break up second, the LED solely lights up after which turns off. So when the machine has a system reset sign, the LED will mild up after which flip off.
Above is an very simple solution to make a laptop computer mainboard check card that anybody can do. Want you guys happiness and success.
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