HP Envy 15-ae178ca not starting .
Laptop has Intel i7-6500u CPU.
Logic board LA-503p
No schematics I could find. (Please, share if you have, thanks. Even similar would help.
From what I could figure out:
the 3.3v and 5v power supply controller chip as well as the corresponding dual mosFets are faulty. (see picture)
That's the 8A 2F chip, which is RT8243A .
The dual mosfets I removed.
Also there appears to be a short on the 3.3V line (around 1 ohm). Strangely when I apply external voltage on there the only part that warms up is the smaller chip on the CPU, (which, I assume, is the intergrated graphics?).
I checked around the whole board to see how the voltage could make it there. I can't see any voltage on other power supplies. Can't understand how the 3.3v could make it to the CPU.
Would appreciate a schematics or some ideas. Thanks.
Laptop has Intel i7-6500u CPU.
Logic board LA-503p
No schematics I could find. (Please, share if you have, thanks. Even similar would help.
From what I could figure out:
the 3.3v and 5v power supply controller chip as well as the corresponding dual mosFets are faulty. (see picture)
That's the 8A 2F chip, which is RT8243A .
The dual mosfets I removed.
Also there appears to be a short on the 3.3V line (around 1 ohm). Strangely when I apply external voltage on there the only part that warms up is the smaller chip on the CPU, (which, I assume, is the intergrated graphics?).
I checked around the whole board to see how the voltage could make it there. I can't see any voltage on other power supplies. Can't understand how the 3.3v could make it to the CPU.
Would appreciate a schematics or some ideas. Thanks.
Attached Files
.
Comment