You press the power button and nothing happens. The screen stays black, but the little standby light on the bottom bezel blinks red in a steady rhythm: a few flashes, a pause, then the exact same count again. That count is the TV talking to you. Sony builds a self-diagnosis routine into Bravia sets, and when the set refuses to start, the number of red blinks per cycle points at which subsystem tripped the protection circuit.
Plenty of these come back to life with a proper reset, and plenty more are done for. Here's how to tell the difference without paying a tech to tell you.
First, count the blinks
Watch the light through two or three full cycles and count the flashes between pauses. Sony sets blink anywhere from 2 to 8 times. Write the number down. If you end up calling Sony support or a repair shop, that count is the first thing they'll ask for, and it saves a diagnostic fee if you already have it.
Try this first: a real power reset
Half of these calls end here, so do it properly.
- Unplug the TV from the wall. Not the power strip switch, the actual plug. Leave it unplugged for two full minutes. Sony's regional support sites give different figures for this — anything from 30 seconds upward — so two minutes covers all of them and costs you nothing.
- While it's unplugged, press and hold the power button on the TV itself (not the remote) for about 30 seconds. This is general electronics practice for draining residual charge rather than a step Sony documents, but it does no harm and costs you half a minute.
- Plug it straight into a wall outlet. Skip the power strip for this test. A tired strip or a brownout-prone outlet can starve the power supply and trip protection.
- Try powering on from the button on the TV, not the remote, so a dead remote can't confuse the picture.
If the set boots, you're probably fine. If it blinked because of a one-off power glitch or a botched firmware update, a hard reset clears it and it may never come back.
Disconnect everything and try again
A shorted USB stick, a misbehaving HDMI device, or a faulty powered accessory can stop a Bravia from completing startup. Pull every HDMI cable, USB drive, and antenna lead so the TV is connected to nothing but the wall. Repeat the reset. If it starts clean, reconnect devices one at a time until you find the guilty one. Cheap USB drives left in the service port are a repeat offender.
What the blink counts generally mean
First, check which kind of Sony you have, because it changes the answer. Sony's LED-colour article covers older non-Android sets and explicitly excludes Google TV and Android TV models. If yours is a Google TV or Android TV — which covers most Bravia sets sold in recent years — Sony publishes no table of what the counts mean. It does still want you to count them: its instruction is to work through the sequence below first, and then, if the light is still blinking red, note how many times it blinks and give that number to support.
For the older non-Android sets the counts are still worth noting, but Sony publishes no universal table and the meaning shifts between chassis generations, so treat these as the common pattern rather than gospel:
- 2 to 3 blinks usually point at the power board or power supply circuit.
- 4 to 5 blinks tend to involve the main board, an LED driver, or protection tripping from overheating.
- 6 blinks is the classic backlight failure signal on a lot of Bravia sets.
The honest takeaway: any blink code that survives a full power reset means hardware, not settings. No menu option fixes a blinking standby light, because the TV never gets far enough to load a menu.
What Sony actually tells Google TV and Android TV owners to do
A continuously blinking red light on these sets — several flashes without a pause — gets a fixed sequence from Sony, and none of it involves counting:
- Turn the TV off and back on with the remote, or the power button on the back of the set.
- Unplug the power cord, then plug it back in.
- Turn the TV off and disconnect every connected device.
- Perform a Forced Factory Data Reset.
If the light still blinks after all four, Sony's own guidance is that repair is required. That is the point to stop trying things.
The flashlight test for a dead backlight
If you suspect backlight failure, turn the TV "on" so it attempts to start, then shine a bright flashlight at the screen from a few inches away at an angle. Look closely. If you can make out a faint, ghostly image behind the glass, the panel and main board are alive and the backlight is dead. That's a repairable fault, and on a larger set it can be worth doing.
Repair or replace
Rough rule for making this call: a power board swap on a set you like is worth it, since boards are a fairly cheap part and the labor is quick. Backlight repair on a 65-inch or larger set can still beat replacement. A main board failure on a budget TV usually isn't worth the invoice. Check your purchase date first. Sony Electronics' US warranty card covers parts and labor for one year from purchase, and many credit cards extend that — inside the window, this is someone else's problem.
One last thing. If this TV has killed a power board before, look at what it's plugged into. Recurring supply failures in the same outlet are a power-quality problem, not bad luck.