Re: Hp elitebook 840

The logic board

I have a faulty HP ELITEBOOK 840 laptop and at first it was just showing dark screen and light on the power button. Henceforth later, when i try to plug in the charger, charger adapter led goes of, showing like a shortcircuit sort of, because while trying to insert the charger head some sort of shortcircuit sound is heard and a burning smell around the charger head input.
Please, assist on this issue and some possible solutions and what may be causing this.

Re: ELITEBOOK FOLIO 9470m System Fan (90B) Error

@mon2 thanks for the help

Re: ELITEBOOK FOLIO 9470m System Fan (90B) Error

Hi, am erick_njomo and am new in BADSCAPS.NET FORUM. i would like to gain some ideas on pc troubleshooting skills, i have a HP ELITEBOOK 840 laptop and at first it was just showing dark screen and light on the power button, henceforth later, when i try to plug in the charger, charger adapter led goes of, showing like a shortcircuit sort of, because while trying to insert the charger head some sort of shortcircuit sound is heard and a burning smell around the charger head input.
Please, assist on this issue.

Re: ELITEBOOK FOLIO 9470m System Fan (90B) Error

Hi, i had the same issue with hp folio 9470m where the system is booting normaly but the the cooling fan couldn't run causing system fan (90B) error. I tried your method of shorting pin 5 and 1 but unfortunately the fun couldn't run whereas i had tried it with another board but it ran perfectly. So probably its damaged, but when i tried with another fan it was running when i short pin 5 and 1.
And my question is, can this AND gate be replaced with an equvalent AND gate available or ot needs the same gate replacement?