Red light blinks one long and 4 shorts

In short; you have replace everything except its display panel and speaker. Replace them too.

Lamp is possible----

Mitsubishi TV troubleshooting
Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.
For example, 3 flashes, then 7 flashes = 37.
Here are the error codes, and the corresponding problem:
12 = No error detected, check power supply.
32 = Lamp Cover is open.
33 = Air filter cover is open.
34 = Lamp abnormality
36 = Light Engine (DMD or Lamp Fan stopped)
37 = Exhaust or Lamp Ballast Fan stopped
38 = Lamp Temperature High
39 = DMD Temperature High
41 = Short is detected
44 = DVI cable between FMT and Engine disconnected

it have short in some board have to checked by some professional.

BLINKING RED LIGHT IS ERROR CODE.

1. Unplug set for a few minutes.

2. Plug back in and turn on.

3. When red power light starts blinking--COUNT THE BLINKS.

4. THREE BLINKS, pause, THREE BLINKS (ETC) IS SHORT PROTECTION AND A DO IT YOURSELF repair for some people. I have complete instructions for this repair.

5. 5 blinks, pause and 5 blinks etc is short on 140 volt line and while not as easy as 3 blink error code it points to places to look at.


If this told you something you did not know, rate this solution as very helpful as I do this here for free.

Post a comment here when you know what error code is and I will help.

REGARDS, SD TECH

Hi,
In general when you have a blink of 4 times.
It indicates the Vertical deflection is stopped.
Possible causes: +- 15V is not supplied. (D board), IC8003 is faulty. (A board)
Symptoms of the problem: TV has entered the standby state after horizontal raster, Vertical deflection pulse is stopped, Power line is shorted or power supply is stopped.

To guide you in the right direction do provide details about your TV .

Hope this helps .

Unplug,replug,push the popwer buton couples time,see if stable green LED light,should get tv pic& suond back, not replaced the backlight video board it some how die.

Try to remove the vertical IC sometimes it become Shorted causing the B+ to drop. after removing try to switch on back check the B+ if ok and the LED not blinking then change the vertical IC.

turn tv on picture comes up 2to3 seconds later tv blacks out then stand by red light flashes 4 times in a row repeatedly..can not turn on or off when stand by light starts flashing but before tv blacks out you can turn tv on and off repeatedly and picture and sound work.You have to unplug power cord for 30 seconds after stand by light comes on to get tv to turn on.

check the horizontal output of your tv set,if short you need to replace it.

5 volt protection is causing the set to go into protective shutdown. Check for shorted diode 6306. Part#934038020127
or shorted capacitor 2318. or faulty voltage regulator