Step 1: Turn power off
Disconnect power when servicing. Power can be turned off at the electrical breaker, unplugging the Ticker power cord from the back or by toggling the power switch located on the back of the ticker cabinet behind the first module as you are facing the ticker.
Step 2: Remove 1st and 2nd LED modules
LED module position can be determined by facing the LED Ticker. The first module on the right side is the 1st. The module to the left of 1 is the 2nd, then 3rd, etc.
Remove the 1st and 2nd LED module. Each LED nodule is secured to the Ticker Cabinet with 6 philips head screws - three on the top, three on the bottom. 
Remove the screws from the first LED nodule. DO NOT use an oversized screw driver as it could slip from the screw and damage the LEDs. With the screws removed, gently pull the LED nodule forward until you see the connections. Disconnect the CAT5 cables, then the power cable. Carefully, set the module aside on a secure surface.
Remove the 2nd LED nodule following the same steps. Carefully set it aside on a secure surface.
Step 3: Replace components
See this article to replace Ticker Media Player.
See this article to replace Sunrise Ethernet Controller.
See this article to replace USB to ethernet Adapter.
See this article to replace a Ticker Power Supply.
Return to this guide to complete work.
Step 4: Double check connections
Verify the opposite side of the CAT5 connected to the USB to Ethernet Adapter is connected to the local network (LAN).
Verify the CAT5 plugged into the on-board Ethernet of the Ticker Media Player is to the Ticker Controller.
Verify power is plugged into the Ticker Media Player.
Step 5: Reinstall 1st and 2nd LED modules
Start with the 2nd LED module. First connect CAT5 between it and the 3rd LED module. Then connect power. Secure the LED module to the Ticker cabinet using the 6 screws.
Install the 1st LED module. Connect the CAT5 cable between in and the 2nd LED module. Then connect power. Then connect the CAT5 from the Ticker Controller the 1st LED module. Secure to Ticker cabinet with the 6 screws.
Step 6: Turn power on
Restore power
Step 7: Verify content
Content should resume shortly after restoring power.