Samsung Screen Flashes On and Off

SOURCE: V3 dead but keypad flashing

Try a new battery.

Soulvisitor

• 1113 Answers
• Posted on Nov 27, 2007

SOURCE: TV quits working, screen goes black and red light next to power green light flashes 4 quick flashes.

The Sony diagnostic routine for 4 blinks indicates it to be a vertical deflection problem.

Did you see a solid horizontal line in the center of the screen prior to it going out? If so, that is a tell tale sign for vertical problems.

basic sony reset below

The STANDBY light will flash if the television detects an issue within the television. Some of these issues can be resolved simply by following the steps below to reset the television.

1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
   
2. Unplug the television power cord from the electrical outlet.
3. Let the television remain without power for 60 seconds.
4. Plug the power cord back into the electrical outlet. NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
   
5. Turn on the television.

SOURCE: Blue screen for a second after power on and then black screen again

Check where your plug go's in to your powersupply if it is well fitted. ////sometimes it dosnt make well connection then you will struggle to get it on.

SOURCE: TV turns on for a split second then back to standyby

i think your capacitor is blown, do a google search for insignia, lcd, capacitor...
you can buy another one for about $2 but its a pain to install, you can also instead buy a new powerboard for about $80, its an east install and you wont blow more capacitors
bestbuy.partssearch.com

SOURCE: Black Screen

You need to replace the flexcable on the phone