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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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Thursday 21 March 2019

DAEWOO DTQ-29M2FS – DTQ-29M5SSN – DTQ-27U8SCN – DTQ-29U8SSN - SERVICE MODE & ADJUSTMENT DETAILS

DAEWOO DTQ-29M2FS – DTQ-29M5SSN – DTQ-27U8SCN – DTQ-29U8SSN - SERVICE MODE & ADJUSTMENT DETAILS

TO ENTER SERVICE MODE [Use customer remote control]
  • Turn the set on.
  • Direct the remote control to the reception window of TV.
  • Push buttons of remote control in sequence as follows.
  • {1  à MUTE à DISPLAY à MUTE}
  • Then, the screen will appear as follows.
  • Using the channel up or channel down button, select the item you wish to adjust.  (The color of selected item turns into the red.)
  • Press the volume up or down button to enter in the service mode you wish to adjust.
  • Must press DISPLAY button the state which the screen is displaying each of service menus after all adjustments are completed each of all service menu.
FACTORY DEFAULT SET DATA VALUES [Click on image to Enlarge]
[*] indicates the items with different settings each of sets.
SCREEN ADJUSTMENT [S2]
  • Enter the service mode and select service adjustment S2.
  • You can see the one horizontal line on the screen.
  • Adjust the Screen Control Volume (located on FBT) so that the horizontal line onscreen may be disappeared.
  • Press the volume up or down button to exit in the screen adjustment mode.
FOCUS ADJUSTMENT
  • Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture details at high light condition.
RF AGC DELAY ADJUSTMENT
  • Receive a good local channel.
  • Enter the service mode and select service adjustment S5.
  • You can see the OSD as shown in below.
GEOMETRIC ADJUSTMENTS [S6]
  • Enter the service mode and select service adjustment S11.
  • Whenever you select the “S11” using the volume up or down button, the screen is changing like this. NORMAL à BLACK à WHITE 100 à WHITE 60 à CROSS [ ó Toggles]

  • Using the volume up or down button, select internal cross pattern.
  • Select service adjustment S6
HORIZONTAL POSITION ADJUSTMENT
  • Select H-CENTER item, adjust H-CENTER data value to obtain proper horizontal centering of the internal cross pattern at the left and right of the screen.


VERTICAL POSITION ADJUSTMENT
  • Select V-CENTER item, adjust V-CENTER data value to center the raster properly on the screen.
Select “V.SIZE” item, adjust “V.SIZE” data value to proper vertical size as follows
WHITE BALANCE ADJUSTMENT
  • Receive a good local channel.
  • Enter the service mode and select service adjustment S8.
  • You can see the OSD as shown in below
  • Using volume up or volume down, adjust service adjustment data of RD/GD/BD and RB/GB/BB until a good gray scale with normal whites is obtained. ALIGNMENT INSTRUCTIONS
  • Press the DISPLAY button to memorize the data.
DIGITAL PRESET [D.P] ADJUSTMENT (S9)
SUBBRIGHTNESS ADJUSTMENT
  • Receive a good local channel.
  • Enter the service mode and select service adjustment S9.
  • You can see the OSD as shown in below.


DIGITAL PRESET
  • Select Sub brightness item, adjust Sub brightness data value to obtain normal brightness level.
  • Press the DISPLAY button to memorize the data.

CONTRAST
  • Fixed value = 27

TINT
  • Fixed value = 38

COLOR
  • Fixed value = 27
FACTORY OUTGOING MODE  [S12: FACT]
  • If you select the S12, then the set becomes factory-outgoing status.
  • You can see the OSD “outgoing OK”