20 Most Recent Mitsubishi WD-73640 73-Inch 1080p Projection TV Questions & Answers

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. If blinks continue without any pause, the main board is faulty.

Check the HDMI cable make sure it is fully seated or better yet get another one. You can get them on eBay for a few $'s

What is the model no of the tv Alex?

code 57 is communication ballast to chassis problem. try:

Loss of 340V from PWB-POWER to Ballast /

Check PL & CJ1 circuitry

Loss of communications between PWB-MAIN

and Ballast / Check FB & CJ3 circuitry Ballast Failure

An error code of 48 indicates a main power board failure. There is a short down the 3.3v or 5v switched supply. recommend replace main power board. part# 934C409001 see the following website: http://www.shopjimmy.com/mitsubishi/wd-73c11?cat=59&q=WD-73C11&tv_models=Mitsubishi+WD-73C11

The first thing to replace is the lamp. Google your model number and "lamp" and you'll find several sites that sell them. It isn't difficult to replace yourself and isn't very expensive. Good luck.

Check its back-light inverter board. If needy replace it. If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/Pull up older posts. Now there is no back-light to your TV.