My TV (Sony Bravia LCD KLV-32S310A) goes of after 20 seconds when it is switched on. The standby indicator then flashes (red) six (6) times then there is a two seconds break followed by another six flashes then two seconds break etc. What might have caaused this and what should i do?

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 section 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. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

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 section 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. http://electronicshelponline.blogspot.com/

6 flahes indicates a panel error possibly the backlight controller

Error codes are hard to find for Sony stuff.

Power off the television. Wait a few minutes, then power it back on. If this does not correct the issue leave the power on, point your remote control towards the Sony television and hold the down arrow button. While holding the down arrow button press the "Power" button. Release the down arrow button and the Sony TV will reset itself to factory settings. Once the television performs a scan on itself your problem should be gone.
Good Luck Ed Pinero

Read more: How to Troubleshoot the Standby Indicator Flashing on a Sony TV ' eHow.com http://www.ehow.com/how_5925008_troubleshoot-indicator-flashing-sony-tv.html#ixzz2KBk1cWbu

Here is a link to the service manual--

http://www.scribd.com/doc/46056922/KLV-23S200A-and-Other

Page 11 explains the error codes--unless you are a tech with a meter etc it will be a shop repair.

A lot of good info including taking set apart correctly.

"abnormal power"

SD TECH

I am experiencing exactly the same problem. TV turns on but within 60 seconds the screen goes black and the red standby light blinks six times. Were you able to resolve this problem on your TV?

My TV (Sony Bravia LCD KLV-32S310A) goes of after 20 seconds when it is switched on. The standby indicator then flashes (red) five (5) times then there is a two seconds break followed by another six flashes then two seconds break etc. What might have caaused this and what should i do?

That means hardware failure. It's the same indicator used on almost all sony products.