The standby light on my Sony BRAVIA 40" LCD HDTV KDL-40V2500 is blinking continuously (there is no flashing sequence, just blinks every 2-3 seconds continuously). It will not turn on. What could be wrong with it?

SOURCE: Four blinking red lights.

you can have the inverter board replaced...instead of the entire panel.
KDL 40S2010: inverter part # 178950032, you will also need 2 spacers..part # 289765511
you're looking @ 200-300$ for the inverter and 5-10$ a piece for the spacers.

KDL-46V2500: inverter part # A1251295B
you're looking @ around 500-600 $ for the part

SOURCE: Sony KDL-40V3000 standby blinks 13 times.

A service technician arrived at my home this morning and infromed me that 13 blinks indicates a bad LCD panel. His quote to repair it was approximately $500 more than the TV initially cost. I contacted Sony support directly, and they have agreed to replace the TV, since it is less than 30 days out of warranty. The KDL40V3000 has apparently been dicontinued so they are replacing with a KDL40V4100(factory reconditioned). I know this won't necessarily help others with the same problem, but if your warranty ended recently enough they will probably work with you to mitigate the expense.

SOURCE: Sony Bravia KDL 46", no picture, standby light blinks 4 times

Since the TV is still receiving power, the problem is going to be with the TV's mainboard.  After you unplugged the TV and plugged it back in, you said the power light went out again, so I assume the standby light wasn't flashing again?  The flashing standby light is indicating an error code so my suggestion is to contact Sony for service options regardless if there is a warranty or not because service is the only solution to this situation.  Don't forget to provide them the error code or 4 flashes repeating.

SOURCE: Sony Bravia KDL-40V3000 standby light blinking

I just worked on this last week 13 blinks means there is a problem with the backlights.So it can be 1 of 2 things bad inverter board( which costs less than $200) or the panel in which case you can thow the TV away as it will probably cost as much for a new TV.Unfortunately the set I worked on ended up being panel. If you try the inverter board just take your time removing it its plugged in rather tight I gently tapped it out with a screwdriver to get it started.

Rustym62
The TV Dude

SOURCE: standby light blinks 13 times

Hi,
13 blinks is backlight error.. can be 1 of 2 things, 1st bad inverter board (on left side panel looking from back) it has several plug ins to the panel as it supplies voltage to the backlights.2nd could be panel itself as backlights are built into it they can't be replaced. Inverter is probably around $200 +labor, panel= buy new tv... they are outrageously expensive. Good luck!