broadcom BCM43142 wifi signal strength issue

[kalc]

wifi only connects at 1-ft distance .. its work fine like 10 days ago got full bar at any corner of my home

06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at f7c00000 (64-bit, non-prefetchable)
Capabilities: <access denied>
Kernel driver in use: wl

3.13.0-37-generic

[JeremyB]

http://packages.ubuntu.com/utopic/bcmwl-kernel-source

This is a newer version but I don't know if it will fix the issue or not

[kalc]

nothing worked