20 Most Recent Mitsubishi WS-55807 TV - Page 9 Questions & Answers


If it is no longer under warranty, locate the convergence ICs which will be large black ICs attacked to a heatsink. Try resoldering the pins on these ICs first. If that does not resolve the problem, replace the ICs. These should be marked STKxxx.

Keep me posted,
Dan

Mitsubishi... | Answered on Jan 13, 2009


Unplug the set, remove all other audio/video components, go open front door, and roll it out to the curb.

Mitsubishi... | Answered on Jan 07, 2009


press down the key with the lock symbol for at least four seconds ,then you can see the option to lock ,unlock etc.try it.thank you

Mitsubishi... | Answered on Jan 06, 2009


It's ring-cracked solder joints on the foil side of the board, most likely in the convergence circuit...
Bill

Mitsubishi... | Answered on Jan 04, 2009


Good Day,

Try these:

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/device 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. SELF- DIAGNOSIS INDICATE X-RAY. CHECK FOR A SHORTED IC5A03 PART # 270P704010 AND AN OPEN R5A73 82K ¼ WATT OFF PIN 2 OF IC5A02 ON THE MAIN PCB. 2. SELF DIAGNOSIS ERROR INDICATES SHORT PROTECT. 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.

Mitsubishi... | Answered on Jan 04, 2009


Access the customer menu, select cable vs. ant then go to auto programming and let it do it's magic.
Bill

Mitsubishi... | Answered on Dec 18, 2008


IYou have to have your comcast box tuned to a channel that is broadcast in HD. On your Comcast remote hit menu. This will bring up several icons, one is HD. Select that icon and it will bring up the TV Guide for just HD channels. Select one and tune to that channel. Once your on that channel use your original remote and hit menu, then advance features, then go down to video display and change it from 480 to 980 or 1080. Let me know if this helps.

Mitsubishi... | Answered on Dec 16, 2008


IYou have to have your comcast box tuned to a channel that is broadcast in HD. On your Comcast remote hit menu. This will bring up several icons, one is HD. Select that icon and it will bring up the TV Guide for just HD channels. Select one and tune to that channel. Once your on that channel use your original remote and hit menu, then advance features, then go down to video display and change it from 480 to 980 or 1080. Let me know if this helps.

Mitsubishi... | Answered on Dec 16, 2008


Rick, Check the convergence Ic's on the foil side for any hairline cracks in the solder joints and re-solder them if you find any... Other than that you may need to replace the convergence Ic's and possible some of the yoke return resistors. What you're seeing on the screen is an absence of one of the colors, blue from what you're describing and that may just be one of the amps is missing voltage due to ring cracks.
Bill

Mitsubishi... | Answered on Dec 14, 2008


its the problem of the main board for sure and needs reparing for sure to make it proper.locate the faulty components and replace them.

Mitsubishi... | Answered on Dec 11, 2008


not sure what light picture has to do with problem  but no there is no  vertical hold control  prob bad electrolytics invertical feed back circuit, need tech..

Mitsubishi... | Answered on Dec 07, 2008


Yes, this TV will need a converter box if you are getting off-the-air reception. It does not have a DTV tuner built in (too old) although is a high-def capable set.

Mitsubishi... | Answered on Dec 06, 2008


hello yes i can tell you where to look . take front of the set off and there's a cover with screw's holdng it on . take it off . and your convergence board in the front of the set.'GOOD LUCK"

Mitsubishi... | Answered on Nov 25, 2008


In the menu ,,under settings usally ther a convergenge option,,what it does is realine the colors,, that should do the trick,,if your tv has that ,,good luck

Mitsubishi... | Answered on Nov 23, 2008


I can't disconnect the parent v chip now it is automatically blocking stations

Mitsubishi... | Answered on Nov 08, 2008


This is a convergence problem and is usually either bad connections at the convergence ICs or defective ICs. If you can solder, you can fix this yourself. Locate the convergence ICs (large black Ics attached to a heat sink and marked STKxxx). Resolder the pins first. If that fails to resolve the problem replace the ICs.

Keep us posted.
Dan

Mitsubishi... | Answered on Nov 07, 2008


You should be able to access all the menu features from the front of the set. Or keep in mind, you can purchase any mitusbish remote and it will do most things, Just look for format button. I may even have one if you need one. Let me know if i helped you solve your problem. Good Luck. Jay

Mitsubishi... | Answered on Nov 07, 2008


Drop me a personal email with the model number and I can Pando you the service manual... But be descriptive as to what you need and for what model, I get more than 3000 requests a day and too old to try and remember what requests goes with what model and to whom... :)
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993
premtech@willapabay.org

Mitsubishi... | Answered on Nov 03, 2008

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