Samsung LA26R71BD no picture - Samsung LA26R71BD 26 in. HD-Ready LCD TV

Refer its user manual for details. https://www.ebookjos.com/pdf/samsung-la26r71bd-owner-manual-guide.pdf Check this link to download the user manual to this set; if you haven't it with you now.
Electro help

Value for what? Provide more details, please. Electro help

http://www.ebay.com.au/sch/sis.html?_kw=Samsung+LA26R71BD+26+in+HDTV+Ready+LCD+TV
Check this link to get more details.
Gopakumar Gopalan Google

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

The model indicated is a LCD set and does not use a lamp--it is not DLP.

Brand and model number are different?

You check up the power regulator MOSFET / IC /or any other parts

After get heat up the part not delever the proper out put.

Replace it

my 26 in Samsung tv did this to me too! took me a long time to get it fixed (and $250 ) ,but i had my backup tv i got from here http://geo.tv-in-pc.com/?source=04017w5r86o3en6qzirpkewq3m

go through the tv menu set-up, using the front buttons on your tv set.

reception issues require a better signal source, attic or roof antenna should solve your dilema
Samsung should stop at AV2 when something is plugged in the correct socket, if it doesn't check for a bad cable.
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I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771