Eight red flashes

SOURCE: Sony KDL-40V3000 standby blinks 13 times.

A service technician arrived at my home this morning and infromed me that 13 blinks indicates a bad LCD panel. His quote to repair it was approximately $500 more than the TV initially cost. I contacted Sony support directly, and they have agreed to replace the TV, since it is less than 30 days out of warranty. The KDL40V3000 has apparently been dicontinued so they are replacing with a KDL40V4100(factory reconditioned). I know this won't necessarily help others with the same problem, but if your warranty ended recently enough they will probably work with you to mitigate the expense.

SOURCE: my sony bravia tv is flashing red stand by light

Try leaving the TV unpugged for 30 minutes so the TV can reset itself.
If that doesn't work, most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you flashing red light codes, circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

SOURCE: Sony Bravia standby light flashing 6 times

there is a bad ground may on the cable check the voltage on the cable & set if on cable call the cable company. if tv call sony they may help with cost may be still under warranty