I have a sony wega model# kdf-50E2000 and the power light blinks green then blinks red 5 times continuously with the screen black why isn't it working

SOURCE: sony kdf-50E2000

bad lamp driver, if you have already replaced the lamp. If not, try replacing the lamp WITH AN ORIGINAL SONY LAMP!. Don't waste time with cheap replacements, you get what you pay for.

SOURCE: sony wega kdf-50e2000 standdby light blinks 8 times

8 BLINKS B -10.5 IS OVER VOLTAGE (B-BOARD) If your a novice call Sony or a Sony authorized service center.

SOURCE: Problem with Sony Wega 50 in kdf-50we655 light blinks 55 times

I fixed my problem by removing the lamp and vacuuming the hell out of the hole where the lamp lives and also getting all of the dust out of the rear ventilation grids with my vacuum. I put the old lamp back in and what do you know the TV has worked perfectly ever since. My lamp was over a year old and did not show any signs of hazing on the lens that you might see on a lamp that has a ton of hours on it. I just thought I would try to put it back in before I spent a couple of hundred bucks on a new lamp.
TA DA problem fixed.

SOURCE: I have a Sony Wega KDF-50E2000 that doesn't turn

Did you replaced lamp in TV recently?
I think TV needs new lamp as existing is either broken or dead.
Lamp replacement procedure would be mentioned in user manual or let me know to provide you more info.
Thanks.

SOURCE: hello our sony grand wega KDF e55a20 has the green

Hi,
Symptom shows Lamp is not working and either lamp or its drive board is bad that will be replaced.
Did you replaced lamp in tv recently?
If not, replace it. Lamp replacement procedure would be written in user manual.
Thanks.