@Boosham45-
Do you have another USB AC adapter you can try, perhaps from a cell phone or other device? The fine print on it must indicate it outputs 5 volts DC and at least 1 amp (1000 milliamps). More than 1 amp is acceptable as the Roku will only draw what it needs.
¿Tiene otro adaptador de CA USB que pueda probar, tal vez desde un teléfono celular u otro dispositivo? La letra pequeña debe indicar que produce 5 voltios CC y al menos 1 amperio (1000 miliamperios). Más de 1 amperio es aceptable ya que el Roku solo consumirá lo que necesita.
Roku Community Streaming Expert
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Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X