HP 650 g2

[Jane]

Does anyone know where is 3.3V formed on this kind of laptop?
I have not working HP 650 g2 laptop and there is only 2.7V, instead of 3.3( before I push the power button)
Thank you

[SMDFlea]

Re: HP 650 g2

Does anyone know where is 3.3V formed on this kind of laptop?
I have not working HP 650 g2 laptop and there is only 2.7V, instead of 3.3( before I push the power button)
Thank you

Find the motherboard model number silkscreened in white, then search for a schematic.

[Jane]

Re: HP 650 g2

The reason I asked about 3.3V rail was the fact I could not find the complete schematic.

So I hope someone will know details about 3.3V rail at least or help me to find the source chip on my mainboard ( experts here may provide hints to a newbie how to)

The mainboard is CIRCUS-6050A2723701-MB-A02

Thanks again for help

[reformatt]

Re: HP 650 g2

Probably the coils down near the RTC battery. But found this, may help.

https://youtu.be/e05iD4Z_G7w