How can I reverse a system update? 

updated the ultrasound system by installing a new transducer but I have not been able to purchase the license for the system update. Can you help me with any suggestions?

The device does not turn on either with the battery or without the battery with the adapter connected.

When the adapter is connected, the battery charge indicator turns on (all LEDs) for about 10 seconds and then goes off. There is no response to the power button.

A similar question has been asked here several times in previous years, but no one had ever answered it in essence. Gentlemen, please help. I do not have the opportunity to turn to the sponsors of this resource for help. I have to fix the device myself. I am an experienced radio technician, I have the necessary equipment, but without a circuit diagrams and diagnostic charts, my capabilities are very limited. Please give me your advice - something like try this, try that. The case is obviously typical - there must be typical reasons, the most probable. Please, help!

Sonosite 180 plus shows a white screen??

Equipment: Sonosite 180 plus