Have 7yr old Hitachi 51F510 and the red goes off to blue then red come on. By the time I get everything adjusted back to norm the red goes off again. When red is on magic focus works good but when red is off magic focus is just green and blue and when done a green #3 and sometimes #5 shows in lower left corner. Am Disabled Vietnam Veteran, Homebound from c.o.p.d. no cure cant afford to have fixed am on oxygen 24/7 and cant get new one I know a little bit abou how to follow instructions any help would greatly be appreciated. Thank you so much for your time. samsamuels420@gmail.com