Why is the LCD screen on the rear of the speaker blank?

There are several reasons why the LCD screen could be blank:

  1. The speaker is not powered on.
  2. The speaker is performing a firmware update. In this case the illuminated PMC logo on the front of the speaker will flash blue/white and/or green/white. During this process, do not disconnect the power or network connection from the speaker. This process takes around 60 seconds.
  3. The LCD’s contrast is set incorrectly. To resolve this:
    1. Ensure the speaker is powered on.
    2. Press and hold the PARAMETER encoder
    3. Rotate the VALUE encoder to adjust the contrast. Keep rotating the encoder in the same direction for up to 30 seconds.

If none of the above steps resolve the problem, locate and contact your Dealer or Sales.