Question about Mitsubishi WS-73907 TV

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Ws-73907 not turning on

Ive got a mitsubishi 73 inch projection that after you turn it on about 3 seconds later it turns right back off, no lights blink it just powers down. ive been looking around and i think i have to replace one of the boards. what do you think

thanks mat

Posted by on

  • atlemzu Aug 03, 2008

    I'm having the identical problem with mine.

  • thameksta70 Oct 29, 2008

    same power failure to start-up t.v.

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5 Suggested Answers

  • 1153 Answers

SOURCE: 65 INCH PROJECTION SCREEN IS SUPER BRIGHT

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB (NOT SHOWN IN THE SCHEMATIC). 2. SHUTDOWN AT POWER WITH 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

Posted on Sep 19, 2007

  • 927 Answers

SOURCE: dm board (power supply) for mitsubishi rear projection tv (ws-55807)

Good day,

mohiuddin;

If the indicator stays on then you may have an DM PCB problem and to correct this do the the folowing:

SYMPTOM: Power LED does not stop blinking after plug in.

CURE: replace C9B01, C9B02,C9B10, and C9B11 (1000 uFD 16V) on the DM PCB. Replace them with part # 181P734030 (680uFd 16V).

The DM Board (PCB) is located on the very left side of the TV looking from back. Caution on removing Board and note what cables you disconnect to access the Metal Shielded Board.
Good Luck, big IRISH.

Posted on Jul 30, 2008

VOTIT
  • 2071 Answers

SOURCE: Help, Help, Help! Mitsubishi 73" red convergence fiasco

Thats the time you need to replaced the convergence IC.
Just click below for convergence repair kit;

http://servicemanuals.vstore.ca/

Double images and colors are blurry and fuzzy images .Blue,red and yellow wave coming up from the bottom of the screen on the lower left and cannot be adjusted this is the symptom for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;

Hope this may help;

Regards,
VOTIT

Posted on Oct 10, 2008

MrMojoRisin1
  • 412 Answers

SOURCE: I want to buy an

hi. You can use a VGA cable and a VGA- HDMI adapter or one ot this (click here) .

Posted on Aug 29, 2011

  • 4 Answers

SOURCE: Green power light blinking all the time on TV

After changing a defective capacitor, my TV still would not power up. After using a solution I found on this site, I held the power and volume up button down on the TV itself for several seconds, the TV powered up normally. I did notice that you had to do this while the timer light was flashing. Doing so after it went out was not effective. I initially only replaced one capacitor which was noticeably defective, and the flashing green timer light eventually returned. I will be replacing all 7 capacitors and resetting the TV. As mentioned above, the capacitors may look good but in fact may be defective. These are high temp caps which breakdown under a load but function normally when cold. Several people have mentioned replacing the capacitors didn't fix the problem. It appears that you must replace and reset using this method to repair some of these TVs.

Posted on Feb 28, 2012

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1 Answer

My power button don't work.my timer light blinks.how can i get it to come on.can i turn it on by cable box. or what.


Download the service manual to your set. It will have all details. blinking of standby light is fault codes. These codes and repair proceedings will be detailed in the service manual.

Jun 04, 2012 | Mitsubishi WS-73907 TV

1 Answer

Help, Help, Help! Mitsubishi 73" red convergence fiasco


Thats the time you need to replaced the convergence IC.
Just click below for convergence repair kit;

http://servicemanuals.vstore.ca/

Double images and colors are blurry and fuzzy images .Blue,red and yellow wave coming up from the bottom of the screen on the lower left and cannot be adjusted this is the symptom for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;

Hope this may help;

Regards,
VOTIT

Oct 10, 2008 | Mitsubishi WS-73907 TV

2 Answers

Mitsubishi WS 55807


Good Day, Girl 1;
Hey, Girl 1, I have four girls not counting my wife . So, helping you may be difficult. Just kidding!
I would highly suspect that you have fluid on your TV's PCB's (printed circuit boards).
So, at this point that you should call an Authorized Service Center and have them give you an estimate before any repairs are performed.
If you want to try repair on your own e me at mmrkcar@yahoo.com.

Thanks you and Good Luck, big IRISH.

Aug 09, 2008 | Mitsubishi WS-55807 TV

1 Answer

Mitshubishi WS-73907 won't stay on


I suspect you may have a short in the horizontal deflection circuits or High Voltage transformer. If the set had a "great" picture, it may be worth fixing providing you aren't planning to upgrade to a HDTV anytime soon, otherwise I would use this excuse to start looking for a new set. Worst case I can envision with this set would be one of the picture tubes having a Short, keeping the set from turning on. That would make it unreparable.

Aug 03, 2008 | Mitsubishi WS-73907 TV

1 Answer

Dm board (power supply) for mitsubishi rear projection tv (ws-55807)


Good day,

mohiuddin;

If the indicator stays on then you may have an DM PCB problem and to correct this do the the folowing:

SYMPTOM: Power LED does not stop blinking after plug in.

CURE: replace C9B01, C9B02,C9B10, and C9B11 (1000 uFD 16V) on the DM PCB. Replace them with part # 181P734030 (680uFd 16V).

The DM Board (PCB) is located on the very left side of the TV looking from back. Caution on removing Board and note what cables you disconnect to access the Metal Shielded Board.
Good Luck, big IRISH.

Jul 22, 2008 | Mitsubishi WS-55807 TV

3 Answers

Mitsubishi WS-55807 TV won't turn on


It s a Power supply problem.If you are not familiar with electronic repairs take it to an authorized repair shop.
To get a service manual see link
Download Mitsubishi WS-55807, WS-65807, WT-46807, WS-55857, WS-65857, WS-55907, WS-65907, WS-73907 Service Manuallockmanualsdnw_en.gif
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Feb 21, 2008 | Mitsubishi WS-55807 TV

1 Answer

Re:problems


Your TV is probably shutting down due to excessive current draw. Replace the filter capacitor in the power supply and cross your fingers. This will be a large, tall, and round shaped object near the location where your power cord goes into the TV. It has two pins and one is positive and other is negative. Do not get them crosses when installing new part. keever

Oct 22, 2007 | Mitsubishi WS-65908 TV

2 Answers

65 INCH PROJECTION SCREEN IS SUPER BRIGHT


super bright is due to failure in video section. 1 video supply might be absent. 2 g2 voltage mighi be high gue to some part defective at ground side. 3 chroma or jungle ic not getting supply or defective. 4 luminance section defective. BUT AS you are also saying that it came once after hitting on top so there is also possibility of loose contact also. good luck.

Sep 18, 2007 | Mitsubishi WS-65819 TV

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