Recent service calls hove shown that some technicians are using the USB ports on set top boxes to power external devices. In this instance 2 x quad multiviewers had been powered by set top boxes leading to failure of four images when the set top boxes were not powered.

This is not to be done under any circumstances – all external devices should always be powered from their own Power Supply Unit.

Any technician found to be powering third party devices from set top box USB ports will receive a warranty callout to replace the power with dedicated power supply.