Was watching TV, heard a pop and the screeen went black. Now when I turn it on, the pwoer light blinks green but their is no picture or audio. The light then starts blinking red

Check and replace the main power regulator board as card basis. It has damaged.

The pop noise could be a capacitor poping its top up.This is a common problem to most TV sets today. Usually located at the power supply board.Once this parts give up it usually shorts the circuit and blows a fuse.Replacements of these parts mentioned will often remedy the problem.Flashing power indicators indicate a problem.If you have the chance of counting how many the blinks are I could have told you the problems code are and the source of the problem.

It sounds lamp in tv got broken as you heard pop sound of it, replace lamp in tv to fix the issue.
Blinking light would be Lamp light at tv front that shows lamp is dead.
Lamp replacement procedure is easy and mentioned in tv user manual.
Thanks.

Hi,
Please check lamp in tv as pop sound seems broken lamp.
Did you replaced lamp in last 2-3 years in tv? If not, then its lamp that got broken and tv needs new lamp.
Lamp replacement procedure is written in user manual and its easy, please buy Sony original lamp for good picture in tv.
Thanks.

3 times blink shows lamp cover is removed or not installed properly on TV.
Please take out lamp inside TV and check, seems its broken as you heard loud pop.
Thanks.

If you still have red light , it means the temperature of the lamp is too much. Did you buy the original part number of the lamp.

You need a new flyback thats what the 3 blinks means. you can get a replacement flyback at the following link and they give free tech support so you can easially install it yourself you need flyback 259296 . Heres the link.

http://servicemanuals.vstore.ca/

there is defective parts on your t.v, you have to consult it to some experts near you if you dont know how to do some electronics repair.

Have a problem with Zenith 37 HDTV. Medel number: Z37LZ5D As wathcing TV, along with 'pop' sound, TV went dead. LG service center gave an advice to unplug the power cord and press ON/OFF power switch about 1 min. Then plug power back and turn on the TV. Well, the green light blink for a while and solid green, but still no screen, no audio. Search the Web and someone suggested to replace Power Supply Board which will fix the problem. Again, search the Web and came out with Power Supply Board. LG Electronics/Zenith 'Power Supply Assembl' with $124.95 from PartStore.com. Is it the right solution? Do I have to replace entire Assembly Board? not just replacing some fuse? Any cheaper way to do? If I have to replce PSA board, any suggestion to how? Comment posted on Apr 22, 2009 I have a basic knowledge of electric and electronics, such as rewiring entire house for renovation and assemble entire computer from scratch.
Actually, the TV belongs to my father and the problem that I stated was based on what he told me.
So the question is based on the symptom that I posted, how sure are you that the problem is the Power Supply Board?
Is it good to order PSB? Comment posted on Apr 23, 2009 Purchased 2 and half years ago. Expired one year warranty. Comment posted on Apr 23, 2009 Zohail,
This is LCD TV.
There is no problem with the wall socket nor current.
I put other appliances on same wall socket and worked.
It has to be internal problem.
As I mentioned on the main post, there was a 'pop' sound while watching and TV went dead.
Turn on remote control, there is blink green light and then green stays on, but no sound, no screen.
Turn off remote control, light turns red. Comment posted on May 14, 2009 I fixed the TV.
Orderd power supply board which cost me $136.51 total.
Replacing was simple.
Just removed the rear panel cover then electronic board housing cover.
Took power supply board with all the connector cables and replaced with new one.
Problem was a transformer connector which got burned and blow up the plastic cover.
But no problem with fuse and capacitors.

Thanks all for advises.

Dont plug it on your tv the FLYBACK of your tv was defective. Need to replace your flyback or else more parts inside was damage. Bring your tv to a Electronic tech.