Mitsubishi WS-55859 55" Rear Projection Television - Page 7 - Answered Questions & Fixed issues

The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

if you installed the DM kit, check to be sure that the gorund is connected on the dM module. Also do you get a error code when you press the device and menu buttons in together for 6 secomds? If so what code are you getting?

you need the V21 V19 DM repair kit to repair that issue. Its a very common problem and a very easy and inexspensive repair. Heres a link to the kit which contains step by step instructions with pictures.
http://servicemanuals.vstore.ca/product_info.php/pName/v21v19-mitsubishi-dm-repair-kit/cName/repair-kits

I do not know if your tehc inclided to pop off the back cover and look and see if there is a fuse blown on the PSU "power supply unit" This is what I would check first- good luck and be careful high votage is inside.. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Most likely a solder issue if it works intermittent. I would double check the solder on the IC pins

If the fan is running (they do fail fairly often), your power supply is progressing toward complete failure. Your description points to a thermal problem whatever the source.
Check fan operation first and if it is running, locate the power supply which will have the larger electronic components on it with several larger transformers and chokes.
Get the part number (if there seem to be two, the one on a label or stamped will be the completed board) and contact Mitsubishi's closest service center to inquire about the price of repair of the assembly or replacement cost. These may not be far apart. 

check out the fuse it must be blown off.it is located on the main board internally.1 fuse.cost of new fuse is $1.

you need to get the model # off the back. if its a 5252 it may be more then your bulb.. need more info
but google the model # and you will find a lamp

Have had bad exprience with RCA converter boxes. The box will lose audio and has to be turned off and then back on. You may want to hit mute during this process, the volume varies from analog to DTV. If you have no problem with analog audio I would look into a different converter box.

bad DM board or capacitors. let me know if you want to attempt yourself, otherwise $200-400 repair..

Your TV is telling you to contact a repair shop because it has a very serious power problem. Check your power outlet with a cheap plug in tester you can get from any of the chain hardware stores to see if you have a problem with electrical outlets that you are plugging into.

Greetings,
Chances are very good that this type of problem is a cold solder joint on one of the circuit boards. Unless you know exactly what you are doing don't attempt to fix this type of problem. The circuit boards in rear projections TV can carry enough voltage to kill you even if the set is not plugged in. Contact a repair shop and get an estimate. Then do a repair vs. new flat panel replacement comparison.
Hope this will put the right perspective on your problem.

The problem is in the Video Circuit board. Chances are that an IC has failed or there is a cold solder joint on the board somewhere. Don't attempt to repair this problem unless you know exactly what you are doing. I suggest that you get an estimate before you have any repairs done and then do a cost of repair vs. replacement comparison. 
Hope this helps you out.

TRY TO GET TO THE MENU, SETUP, AND EDIT YOUR SETUP SO EVERYTHING IS DEFAULT. I TOOK A 2001 50" HOME LAST NIGHT, MY SLEEP TIMER LIGHT ON THE FRONT, BLINKED FOR A FEW MIN. THEN, YOU CAN TURN IT ON AND RESET.....HOPE IT HELPS.......????

Need new capacitor for the dm modul

The blinks are giving you an error code. Write down the sequince of flashes and then you can look those up online to find out what is erroring.

there are some components failing and it will need some testing and research to fix the video problem

HELLO YOU FIRST NEED TO UNPLUG THE SET , THEN TAKE OFF THE BACK OF THE SET. AND LOOK FOR TWO LARGE SILVER HEAT SENK'S THE IC CHIP'S WILL HAVE STK-393-110 ON THEM.!!! WILL BE SCREWED TO THESE HEAT SENK'S WITH SCREW'S AND SOLDER TO THE BOARD ON THE BOTTEM OF THE BOARD,!!! WELL "GOOD LUCK"

SOUND LIKE YOU IN NEED OF A NEW COLOR WHEEL. FOR YOUR SET."GOOD LUCK"

HELLO. YOU MIGHT NEED A NEW COLOR WHEEL. FOR YOU SET."GOOD LUCK"