Also it cannot connect with usb.
Before brick, its 4.04 CM9. One day its shut down but it can still go to recovery mode.
When I use CWM to wipe data and flash ROM. Its shut down and cannot turn on again.
Have you tried manually flashing the stock images through fastboot? If you have the i9250 (GSM Maguro) Please follow this guide on restoring to stock using the fastboot method. It has helped me before. http://forum.xda-developers.com/show....php?t=1366806
I once had a similar problem. Thought my phone was bricked and was trying all day to recover. Eventually the battery died and it wouldn't turn on or charge even when plugged in with a wall charger. I had to find a different (charged) battery to put into the phone, then was able to boot and recover.