Doubt in this diagram laptop.

[saularciga]

Hello, I have a doubt in this diagram laptop.
Annex picture. Could you tell me if it is normal the value of 2 ohms off the coils. The reading was taken without processor.
That value should be?

[khaahk]

Re: Doubt in this diagram laptop.

If measuring relative to gnd without cpu 2 ohms, then no. Should show high resistance.

[ktmmotocross]

Re: Doubt in this diagram laptop.

more than 5ohm. remove coil to locate short

[saularciga]

Re: Doubt in this diagram laptop.

OK, will remove coils, and will measure again.
That value should be aproximadamente? 50 ohms or more ? 100 ohms

[budm]

Re: Doubt in this diagram laptop.

2 Ohms measured between the two legs of the inductor? The DCR will be very low which is normal, if 2 Ohms against GND then is not normal.
POWER MOSFET Q513, 516 may be bad or bad filter caps.

[saularciga]

Re: Doubt in this diagram laptop.

Ok. The mesure is if 2 Ohms against GND ,. Es very low. I removed Mosfet and the measure is the same.: 2 ohms. I will measure caps

[budm]

Re: Doubt in this diagram laptop.

"I removed Mosfet and the measure is the same.: 2 ohms. I will measure caps" both Q513, and Q516?

[saularciga]

Re: Doubt in this diagram laptop.

Hi, removed all mosfet y the measure is the same : 2 ohms

[rievax_60]

Re: Doubt in this diagram laptop.

Did you remove the coils? Normal resistance should be hundreds of ohms or higher.

[saularciga]

Re: Doubt in this diagram laptop.

Hi... RESOLVED!!! C734 BAD .
MUCHAS GRACIAS A TODOS!!