REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Saturday 9 February 2019

MITSUBISHI WT-46809_WS-55809_WS-55819_WS65809_WS-65819 _ RPTV _ LED INDICATOR DIAGNOSIS

MITSUBISHI WT-46809_WS-55809_WS-55819_WS65809_WS-65819 _ RPTV _ LED INDICATOR DIAGNOSIS




LED INDICATOR DIAGNOSTICS

The “Power ON LED” provides an indication of the sets operation, and the possible cause of a malfunction.

INITIAL CONTROL CIRCUITRY CHECK


Immediately after the TV is connected to an AC power source:
The LED flashes three times ... indicating the Microprocessor has initialized and is functioning properly.
If the LED does not flash ... the Microprocessor is NOT functioning.

ERROR CODE OPERATIONAL CHECK


  • Pressing the front panel “INPUT” and “MENU” buttons at the same time, and holding for 5 seconds, activates the Error Code Mode. The LED flashes denoting a two digit Error Code, or indicating no problem has occurred since the last Initialization.
  • The number of flashes indicates the value of the MSD (tens digit) of the Error Code.
  • The flashing then pauses for approximately 1/2 second.
  • The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.
  • The Error Code is repeated a total of 5 times.
  • Example: If the Error Code is “24”, the LED will flash two times, pause, and then flash four times.

Note: The front panel buttons must used, NOT those on the Remote Control.

ERROR CODES

The Error Code designations indicating a malfunction, or no malfunction, are listed below:
  • “12” ... indicates no error has occurred.
  • “21” ... X-Ray Protect circuit.
  • “22” ... Short Protect circuit.
  • “23” ... Horizontal Deflection failure.
  • “24” ... Vertical Deflection failure.
CIRCUIT ADJUSTMENT MODE

Most of the adjustments can only be performed using the remote hand unit. Many of the adjustments must be performed in both the NTSC and HD modes. Video/Color adjustments must be performed in the NTSC and HD modes, and data must be preset in the 480P (DVD) and VGA modes.



ACTIVATING THE ADJUSTMENT MODE
  1. The current signal source determines if the activated Adjustment Mode is NTSC or HD.
  2. Select the signal source (NTSC or HD).
  3. Press the "MENU" button on a remote hand unit.
  4. Press the number buttons "0", "1", "5", "7" in sequence. The screen will change to the Adjustment Mode.
  5. Note: Repeat steps 1 and 2 if the circuit adjustment mode does not appear on screen.
SELECTION OF ADJUSTMENT FUNCTIONS AND ADJUSTMENT ITEMS.
  • To select an adjustment item in the circuit adjustment mode, first select the adjustment function that includes the specific adjustment item to be selected. Then select the adjustment.
Press the "AUDIO" button on a remote hand unit to select an adjustment function. Each time the button is pressed, the Function changes in the following sequence:

"START => VIDEO CHROMA => DEFL JUNGLE => MAIN MATRIX => SUB MATIX => AUDIO => IRIS => HR => <=
  • Press the “VIDEO” button to select a specific Adjustment Item. The Item number increases each time the “VIDEO” button is pressed.
CHANGING DATA 
  • After selecting an adjustment Item, use the “ADJUST UP/DOWN” button to change data.
  • Press “ADJUST DOWN” to decrease the data value.
  • Press “ADJUST UP” to increase the data value.
SAVING ADJUSTED DATA
  • Press “ENTER” to save adjustment data in memory. The character display turns red for approximately one second in this step.

Note: If the circuit adjustment mode is terminated without pressing “ENTER”, changes in adjustment data are not saved.

TERMINATING THE CIRCUIT ADJUSTMENT MODE
  • Press the “MENU” button on the remote hand unit twice to terminate the adjustment mode.
Note: The circuit adjustment mode can also be terminated by turning power OFF.

TOGGLE BETWEEN RECEPTION MODES

  • Pressing “3” when in the Adjustment Mode toggles between NTSC, HD, 480P and VGA. However data changes are not automatically saved. Press “ENTER” to save data before pressing “3”.
Posted By: FRANK at 01:18
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