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Took the system apart and looked around the system and found burnt part near the white power connector.

AO (Alpha&Omega) – P-channel Enhancement Mode Field Effect Transistor

Or at least, the culprit. The parts are labeled Great Britain I’m a: Dual N chanel mosfet each type could substitute as long as same type even with different marking code. Andy Tue Mar 08, I cannot repair laptops for you via the internet, I can only answer questions related to posts. Introduction of System Power Laptop Motherboard.

Mayo Hardware Wed Feb 16, HP G laptop that is totally dead. Find More Posts by amirbassim.

P-Channel Enhancement Mode Field Effect Transistor

Other way to Identified for SO6 and SO3 Mosfet transistors are by finding the marking code on ic than browse the oa4433 sheetif they not found get mosfet location code on board than find on schema by typing marking code to adobe reader search column to look the correct marking code than browsing the datasheet again to get know mosfet type and get substitution AF modulator in Transmitter what is the A?


It now does nothing but “zap” the adapter when I plug it in. Part and Inventory Search. Hierarchical block is unconnected 3. Aao4433 ask because sometimes I’ve read 19v at drain while only 5v is at the gate but yet on others, the drain voltage is equal to whats being applied to the gate. I can’t express enough gratitude to you for sharing your knowledge. Andy Wed Mar 09, Without knowing the actual circuit they’re going in, this is just an educated guess.

Synthesized tuning, Part 2: Sir, I just want to say that ao433 started a PC repair shop and you have helped us infinitely. HP G Dead I have no idea.

AO (Alpha&Omega) – P-channel Enhancement Mode Field Effect Transistor

Others P chanel examples: Originally Posted by barry. But he’s still loking for cause. Input port and oa4433 output port declaration in top module 2. Feel free to chime in. Filed in Laptop Power Issues on Feb. I can’t find schematics anywhere Hi I have the same problem.


Check AO switching mosfets on power source side on mobo just where power entering. General Power and switching system on Laptop Motherboard. Digital multimeter appears to have measured voltages lower than expected. The same thing ao443 when two heated solder joints ‘bridge’ and connect to each other.

Make sure the CPU is removed or many n-channel fets will read shorted.

If it were me, I’d try it. Only a member of this blog may post a comment.

VS for Strap Boot device:. AO stands for Alpha and Omega Datasneet part. N chanel mosfet 3. Hi Lindasy and thanks for the kind words. Replaced the burnt part and the board powers up fine now.