Help,SD card can not be recognized even under recovery mode, does that mean hardware problem?

[Guest fantong]

I upgrade and downgrade many times because my liquid can not be recognize even under recovery mode.

In OS mode, it said Removed SD card. I tried several sd cards, maybe 4 cards, 128m, 2gx2, 8g. 

It recognize 8g card one time, and after reboot , it didn't recognize again.

It recoginize 128m card one time and said this card need to be formated, so I do it, but after reboot, it show removed sd card notification again.

After I reboot to recovery mode, it said can not mount sdcard.

here is some logs

E/vold ( 960): Cannot start volume '/sdcard' (volume is not bound)^M

D/MountListener( 1035): handleEvent volume_nomedia:/sdcard^M

D/MountListener( 1035): handleEvent ums_disabled^M

D/MountListener( 1035): handleEvent ums_connected

Does any one know how to fix it?

[Guest fantong]

 It seams no one have ideas , I had return it to factory yesterday.