Vaio DA0HK1MB6E0 MBX-247 Burning any EC
Hello to all.
I have this Sony Vaio QUANTA HK1 DA0HK1MB6E0 MBX-247 that is burning the NUVOTON EC when you connect it to power supply.
1) The +3vpcu line is going to a direct short after connecting the motherboard to power supply.
2) I discovered the EC NUVOTON was shorted. After removing it the short gone out on that line (+3vpcu) but... (If i quit the EC the 3.3v are pressent on +3vpcu because the shorted component was quited)
3) There were no shorts after soldering the new EC NUVOTON. But after connecting the board to power supply the EC keeps burning again!
There are no direct shorts to ground meassuring any of the 133 pads where the EC has to be soldered. And there are no voltages higher than 3.3v on some of the pads.
The rtl8111e was getting hot too, so i unsoldered it before soldering the new EC. I thinked that maybe that realtek IC was burning the EC. But the motherboard keeps burning any EC i solder to it.
Any ideas?
Sorry for my bad english and thanks very much
I have this Sony Vaio QUANTA HK1 DA0HK1MB6E0 MBX-247 that is burning the NUVOTON EC when you connect it to power supply.
1) The +3vpcu line is going to a direct short after connecting the motherboard to power supply.
2) I discovered the EC NUVOTON was shorted. After removing it the short gone out on that line (+3vpcu) but... (If i quit the EC the 3.3v are pressent on +3vpcu because the shorted component was quited)
3) There were no shorts after soldering the new EC NUVOTON. But after connecting the board to power supply the EC keeps burning again!
There are no direct shorts to ground meassuring any of the 133 pads where the EC has to be soldered. And there are no voltages higher than 3.3v on some of the pads.
The rtl8111e was getting hot too, so i unsoldered it before soldering the new EC. I thinked that maybe that realtek IC was burning the EC. But the motherboard keeps burning any EC i solder to it.
Any ideas?
Sorry for my bad english and thanks very much