Flashing standby light - Onkyo TX-SR875 Receiver

The flashing standby light on your Luxor TV can indicate several things, including:

1. Power supply issues: If the TV is not receiving proper power, the standby light will flash.
2. Malfunctioning hardware: A malfunctioning component in the TV such as the power supply, main board, or backlight system can cause the standby light to flash.
3. Overheating: If the TV is overheating, it will go into protection mode and the standby light will flash.
4. Software issues: A software glitch can also cause the TV to display a flashing standby light.

If the flashing standby light persists, it's best to unplug the TV, wait a few minutes, and then plug it back in. If the problem persists, you may need to contact the manufacturer or a professional repair service for further assistance.

Sounds like your backlights are bad, can you see a faint picture with the flashlight test

8 flashes of standby light to Panasonic Plasma indicates Driver SOS 3 SS Board (SS energy recovery circuit). For more details, check this link.

How many times do the standby light flashes at a time? Count this. These flashes are fault indications. Check this to know more about blinking codes to Panasonic LCD and Plasma displays.

Standby flashing light shows that tv got some internal problem. How many times standby light is flashing is info that provide info about what section of tv got problem.
Count standby light blinks and let me know, there would be 3 seconds long pause in blinks so count pause to pause.

Hi,
Flashing standby light is an error code that is specific, there would be pause of 3 seconds in flashing, so count pause to pause and let me know that how many times red standby light is blinking to diagnose problem.
Thanks.

you need to test the lamp with a ohm meter, to see if its working correctly

Here's an excerpt from the Sony Manual online. And the link - http://esupport.sony.com/US/perl/webtree.pl?template=EN&mdl=KDF55XS955&content_id=68&category_id=11&problem_id=52

The POWER/STANDBY (red) indicator flashes three times
If your power/standby indicator is flashing in a pattern of three flashes, this may indicates that the lamp cover is not attached securely. Follow the directions in the Operating Manual under changing your lamp that related to closing and securing the Lamp Cover. Ensure that the Lamp Cover Door is securely fastened by tightening each screw.

The POWER/STANDBY (red) indicator flashes continously
If your power/standby indicator is flashing continuously, and the lamp cover has been secured, your TV may be in need of service.

The POWER/STANDBY indicator is lit up green (not flashing)
A sustained green light indicates your TV is on.

The POWER/STANDBY indicator is lit up red (not flashing)
A sustained red light from your power/standby indicator simply indicates that your TV is in standby mode. This shows you that your TV is ready to be turned on with the remote.

Is it the power light and not the lamp light? If the lamp light is flashing then replace the lamp.

The standby light blinks 5 times