3 flashing red lights - Microsoft Xbox 360 Console

When the red light is flashing while connected to the charger means the battery is being charged, once fully charged the light turn from red to green without flashing. If the red light is flashing while being use means the battery is low and in need of charging.

4 flashing red light = av cable not connected. double check id av cable is connected properly. try using different av cable.

3 flashing red light = hardware problem . may require repair

2 flashing red light = overheating

1 flashing red light on bottom right LED with error code = hardware failure may require repair

Hello,
Count how many times the red light flashes and how many the green light flashes.If its 1 green and 1 red thats water problems.If 2 flashes of red light check filter is clear and pump is free to turn.

Hope this helped.

PS3 flashing is not hard to fix. Do you want to fix it by yourself instead of pay $150 checking to Sony? Here's the solution :
PS3 Red Light Fixing Guide

There are actually some certain meaning on the red light and green light showing different information to user. The summaries are:
1) Green On, Red Off = Printer Ready.
2) Green Fast-Flashing, Red Fast-Flashing = Printer warm up.
3) Green Fast-Flashing, Red Off = Printer off-line.
4) Green Slow-Flashing, Red Off = Processing Data.
5) Green Off, Red On = Cover Opened, Toner Empty or Developer Unit / Drum unit missing.
6) Green Off, Red Fast-Flashing = Paper Jam or waiting for jam reset.
7) Green Off, Red Slow-Flashing = Paper Empty or Paper tray is not inserted.
8) Green Off, Red Off = Printer power is off.
9) Green Very-Slow-Flashing, Red Off = Printer in sleep mode.
10) Green (any condition above), Red Slow-Flashing = Toner low or paper empty.

So what is your printer condition? Better know what is going on your printer so can solve the problem.

The specific type of hardware failure can be determined by a "hidden" error code
Turn the xbox 360 on, and wait till the 3 red lights are flashing.
Press and hold the sync up button (the small white one), while holding that button press the eject button.
The LEDs will now blink the first number in the code (as described below).
Release the eject button and press it again.
The LEDs will now blink the second number of the code.
Release the eject button and press it again.
The LEDs will now blink the third number of the code.
Release the eject button and press it again.
The LEDs will now blink the forth number of the code.
Release the eject button and press it again.
The LEDs will go back to the 3 red flashing lights.
You should be able to determine the difference between the 3 flashing lights and the error code lights by the rate in which they flash.
Here is how you interpret the LEDs to get the code number:
All four lights flashing - 0
One light flashing - 1
Two Lights flashing - 2
Three lights flashing - 3

Once you get this code, go to: http://forums.xbox-scene.com/index.php?showtopic=484726
To get the reason for the code.

the other tech is correct but theres also other causes. if 4 red lights are flashing making a full ring your av plug at the back of the xbox is not plugged in. if it has 2 red flashing lights yor unit is overheating. 3 red flashing lights means your cpu is unstuck and is stuffed. 1 red flashing light is a HDD issue

red light flashing on servis fridge freezer

power supply board going bad

Then I'd say it's a reasonably sure thing that the green light is just burned out, The lights are supposed to be off at first, then red when there's a partial charge, then green when there's a full charge, then flashing between red and green when the "battery saver" kicks in. If you're seeing off, then red, then off, then flashing red, then that means everything in the charging circuit is working perfectly, there's just no green light.