Wifi disconnecting

After a little time away from Zorin I have found my way back and installed the latest version. I keep getting random wifi disconnects. I have disabled the power saver and this is the result of lspci:
$ lspci
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)
00:1c.3 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4)
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
02:00.0 Network controller: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)
Up until recently I have been using linux mint and this was happening with that distro as well. I have used a wifi dongle and don't get the disconnects, while I realise using that is an option I would like to try and rectify whatever is causing the issue with the wifi card. Any assistance would be very much appreciated.

You might try this package.

Thank you for taking the time to respond. I have done as you suggest, package installed. I will monitor to see what happens.

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Ok, so this hasn't worked. I installed the package and rebooted. Initially hopeful but wifi has disconnected 3 times in the last 30 minutes.

Reboot, in bios turn off secure boot.

In the terminal write

sudo apt-get install --reinstall bcmwl-kernel-source

Secure boot was already disabled, the terminal command has been executed. Thank you again for your interest.

No progress unfortunately. Still dropping out with no warning.

Would you mind posting the output of sudo lshw -c network?

Thank you for responding, this is the output you requested:
sudo lshw -c network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0
version: 10
serial: 68:f7:28:79:11:c0
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.11.0-46-generic firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=twisted pair
resources: irq:18 ioport:3000(size=256) memory:c0504000-c0504fff memory:c0500000-c0503fff
*-network
description: Wireless interface
product: BCM43142 802.11b/g/n
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 01
serial: ac:d1:b8:f0:8c:0f
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:19 memory:c0400000-c0407fff

Try drivers - DPKG error while installation bcmwl-kernel-source on ubuntu 16.04 - Ask Ubuntu

The checked solution on that page.

That's done thanks again. Will monitor and report back.

This appears to have done the trick. Whilst I have no idea what has happened I am very grateful for your help.

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