Humorous noise and no picture

Check all the solder terminal at its main power regulator section circuit. Any loose solder terminal can poise this type of problem. Resolder all the suspected solder terminals by applying a little more solder. If you wish to get more details, check this site.

Resolution:

Follow the steps below to troubleshoot this issue.


Verify that the AC power cord is connected securely to a working wall outlet.
Unplug the power cord of the television from the AC outlet.
Let the television remain without power for 1 minute.
Plug the power cord back into the AC outlet.
Attempt to turn on the television.
NOTES:

If the issue is still unresolved after completing all of the troubleshooting steps, service will be required.
Make a note of the STANDBY or TIMER flash pattern when referring the television to service.

you need to call a repair tech and have them check for blown capacitors in the power supply and the x & y sus (the circuits that light up your screen) for defective capacitors. they are very obvious to see-normally the top a a capacitor is flat, but in this case if bad they will be bowed out -rounded on the top.

go to turn tv on,hear a poping noise,once then tv standby lite blinks 3 times repeatily but no picture or audio.can you help me out with this thank you

your power unit maybe going bad

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Sounds like the digital board needs replaced.

Thats a common problem when the caps on the DM need replacement. They will function fine untill power is interupted then the set will not complete the boot sequence when power is reapplied and the led will just continue to blink. Hers a link to the kit that will usually repair that issue the kit comes with instructions.
http://servicemanuals.vstore.ca/product_info.php/pName/v21v19-mitsubishi-dm-repair-kit/cName/repair-kits

take it to an authorized samsung service center, your color wheel may be broken or your dmd maybe damage.

I just had this problem fixed. In my case, it was because the insulation on the CRTs was cracked, and when it would warm up, the shielding would separate and would let 5000 volts arc across the main board. This, obviously, damaged the board. The tech didn't catch the arcing right away, so they replaced the main board twice before they used a high-temp RTV to patch the insulation.

The power-cycling was a result of the damaged board.

The point of this story is that the broken part may be a symptom of the real problem.

I hope this helps someone!

how many times does the light blink? There is a diagnostic set-up built into these Sony TV sets.