Question about Mitsubishi WT-46809 46" Rear Projection Television

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WT 46809 The set has a 2-2 code ....i replaced the power board and main..has new ics...keeps blowing the f9a02 and f9a04 fuses....not sure what else to try

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  • jontor6891 Mar 10, 2009

    The TV all of a sudden would not come on, and all that happens is the green light comes on for a couple seconds and then off with no noticable sound or picture. The error code flashes 22. We have not had any blown fuses. We have a mitsubishi wt46809.
    My email is snowking49690@sbcglobal.net, any info would be helpful, thanks so much.

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  • Mitsubishi Master
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22 is a error code for a short protect which is triggering shutdown . Try unplugging the crt circuit boards and seeing if the fuses still blow when you press power.

Posted on Jun 23, 2008

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Mitsubisi wt-46809 will not turn on. i plug it in and it blinks 3 times then nothing. no error code when i hold menu and input


keep in mind if you unplug set it clears the error buffer.

Try to turn set on and if power light comes on and goes off then do the self check; menu and input for at least 5 seconds and release both buttons.

UNPLUG TV ANDTHEN PLUG BACK IN---TURNON---GREEN POWER LIGHT COMES ON FOR A MOMENT ANDGOES OFF.

PRESS AND HOLD "device" and "menu"buttons on front of tv for at least 5 seconds and then release both together.


Watch for power light to blink in a sequence:

1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

2 blink-then 3 blink---------deflection circuit problem

2 blink-then 4 blink---------vertical circuit problem


******2, then 2 is most common---usually means one of the fuses that protectthe Convergence IC or IC's is blown---set will detect no voltage to convergenceIC and shut down.


SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES ANDTHEN TO GET IT TO REPEAT MORE YOUHAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.


IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM

let me know what you find--hope that you find 2 blinks, a pause and twoblinks--this is the most common and easiest to fix.

Before you rate this information let me know what you find.

SD TECH

Jul 20, 2011 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

The green timer light flashes when i plug in the tv, after hitting power the timer light comes on for about 4 sec then goes out. Tv does not power up, the error code it blinks is 2 blinks a pause and 2...


MODEL NUMBER WT-46809:

2,2 is the error code for short protection.


The most common reason for this is one of the 2 pico fuses that protect the convergence circuit is blown. Changing the fuses will not help! They are green in color and soldered into the middle circuit board and are F9a04 and F9a05----look like resistors but are 5 amp fuses.

99% chance if one or both are blown---you have to have someone change the STK-392-570 convergence IC'S that this set uses----the IC'S can be purchased on Ebay for under 14 dollars and the same seller sells the pico fuses 5 @ 2.95.

The best thing to do here if you or someone you know is able is to unplug the set and look for the fuses---middle board towards the back---there are 5 of them and the two closest to the back of the row are for the convergence IC----If someone checks them (like testing any other fuse) you will know--if either or both is blown--the convergence IC got them.

I have start to finish, step by step instructions and photos of the fuses etc----If you or someone you know can solder and is handy--you may be able to do the repair yourself.

If not, shops usually charge 300-400 for this kind of repair in this set.

LET ME KNOW IF YOU NEED ANY ADVICE or help.

Regards, SD TECH

Oct 28, 2009 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Mitsubishi WT-46809 Powers Off; Code 2-2


The 2 fuses you mentioned are associated with the convergence IC. If they are open then the convergence IC is either bad or you have a "cold" solder joint on the IC.

Feb 01, 2009 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Mitsubishi wt-46809 rear projection


see if the ics warm up ...out your hand on them if so they getting power.. if cold you lost a resistor or 2.

Sep 25, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

WT-46809 will not stay on


Good Day, dimen;
This looks great. Check this out;

SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB. Good Luck, big IRISH.

Aug 29, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Mitsubishi WT-46809 Turns on with Power light then turns off


there are 2 fuses -24v and 24 v normally would go out because
covergence ics failled . That would be a shutting down problem cased by missing those voltages.so you would need to replace those 5A (small green fuses) , you would need some kind of soldering and unsolderin skill) and the ics are stk392 570.two also. open the set from the fron ,taking speaker grill off and then the wood board behing (4-6 screws) you the the board in the center big metal heatsink. you would need to work from the back to repace those puppies.hdtvman

Jun 07, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Installing STK392-570 IC's on a Mitsubishi WT-46809


tburg05,
Whoever told you that the WT46809 took two STK392-570 Ic for convergence amps were absolutely - 100% correct... The amps are located at position number Ic8c01 & Ic8c02 on the board. Very difficult to miss too they are about half the size of a pack of cigarettes and 1/4 as thick. They are Mitsubishi part number 267p150010 and after replacing them you want to also check all the low ohm resistors in that circuit for the yoke return.
If you order them don't get them from ebay or some other less than ignorant place, our industry is loaded with chineese knock-offs that would last tem minutes in your set before failing again... Personally I'd order them from Acme Enterprises out of Florida, 800-575-9833 and know that they were Sanyo originals that way.
BTW: If you replace these yourself make sure to use a generous portion of heat sink compound on the new installs for heat dissipation.
Bill

Dec 11, 2007 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Rear projection set


Convergence circuit repair = replace STK392-570 IC's........
Located on center circuit board on large heat sinks........T.

Please rate this solution...................

Nov 07, 2007 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Thanks for your help with the Mitsubishi WT 46809 but, there is more:


Fuses and IC's are soldered in on large PC board in center of chassis....
Your model is a tight fit that is usually repaired by chassis pull first, then
board repair, normally by a skilled Mits tech........

Oct 11, 2007 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

MItsubishi WT 46809- not staying on when turned on


One or more fuse devices open==caused by convergence IC

shorted. Solution==replace fuse(s) and STK I.C.(s).

Oct 08, 2007 | Mitsubishi WT-46809 46" Rear Projection...

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