Likely cause:
External power supply failed. Source an identical replacement.
Component failure on circuit board. Seldom repaired, even by the manufacturer. Replace it.
TV, audio system, laptop, other electronic tech not working
Repair Cafés are free meeting places that are all about repairing things and keeping them out of landfill- clothes,
furniture, electrical appliances, crockery, appliances, toys, clocks – whatever is broken, we will try to fix it.
