asus p4G533-LA / HP echo4 question

[mcontoso]

I have the same problem - my son has operated with the front USB and he is very sad now. I will try to repair this. But I have no experience with smd - how to do it precisely. When I get back home I will look at the smd transistors - I should cut it out or so? Please tell me some details. In that case it is only problem with Q21 or I have to check the other 2 also. The Q21 is on the main mobo plate or on that part next the front usb sockets. Thanx, i know that is 2008 now, but we still use it (trying to).

[Platypus]

Some information about working with surface mount devices here:

http://poeth.com/smtmfg.htm

If you don't have appropriate soldering equipment and experience, the main risk is damage to tracks and solder pads on the board.

If you can identify that one of the transistors is shorted and preventing the board from booting up, eg by measurement with a meter, but don't have soldering equipment, you may be able to carefully cut the transistor leads using a brand new blade in a Stanley knife. That could achieve Lex's second repair alternative.

[mcontoso]

Thank you for your quick answer - i am reading now - not to destroy to much.
I probably use a blade, but I wonder about the glue under the smd transistor. But it can stay on its place with cuted leads, in the end.

[mcontoso]

Victory, I have fixed it 15 minutes ago.The machine is still alive. I am writing this post on it. I cutted off the Q21 transistor (next to front USB connectors on mobo) and it was that. Thanks a lott LEX, Platypus! and other people for help!