Technical Support IC 51125 Very Hot!!! in a Samsung Notebook RV-510

williams84

Registered
Golden

Reputation:

If can be interesting, I’ve 3v and 5V in corresponding condensators.
Now do you want that I inject 3v and 5V on pin of IC or condensators?
 

Hosein Asadolahi

Staff member
Registered

Reputation:

If can be interesting, I’ve 3v and 5V in corresponding condensators.
Now do you want that I inject 3v and 5V on pin of IC or condensators?
do you test on ldo voltages or alw voltages ? both of them must be present . alw voltage must be present on indoctors and ldo voltages must be present on pin 8 and 17 of ic . which one did you tested ?
 

williams84

Registered
Golden

Reputation:

In these pin of IC I’ve 3,3V And 5V.
Instead in inductors in the other side of mobo there are 0 V and inductors are in short!!!!
 

williams84

Registered
Golden

Reputation:

I’ve tried to inject on 2 inductors 3,3v and both inductors absorbe 3,7A but nothing heat! Also ic is cold.
 

williams84

Registered
Golden

Reputation:

News!!! I applyed 5v on inductors and I've on my supply 1,5v and 3,87A. After few minutes I have burnt a mosfet!
But also within mosfet I've short on both inductors.
 

williams84

Registered
Golden

Reputation:

In this area in past I removed a mosfet because I need this for another mb. I place GM4435GM, i don’t remember wich was there but I think GM4435GM. What’s the position of pin 1?
 

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