I see you mean the power light is flashing red / blue, rather than the screen is flashing red / blue. Thank you for that much. This time you didn't bother to even mention the make, let alone the model. What's the matter with you?
Once again:
These may provide some clue - if you go looking for spares make sure you know the exact model number!
http://www.tomsguide.com/answers/id-2454893/hitachi-42hxt12u-switch-flashing-red-blue.html
http://www.justanswer.co.uk/appliance/8vj2f-i-hitachi-l32hp03u-working-just-fine.html
Anon, July 2016
