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 !

Wednesday, 20 March 2019

TATUNG V27CMTT-Exx - V30CMTT-Exx - TROUBLESHOOTING - REPAIR FLOW CHART - CHILD LOCK RELEASE

TATUNG V27CMTT-Exx - V30CMTT-Exx - TROUBLESHOOTING - REPAIR FLOW CHART - CHILD LOCK RELEASE



TATUNG 27”/ 30” Wide Screen European LCD Multi-Media Display.
FAULT CODES


NP1
No Picture and No Sound
in TV mode
•  Make sure the Power cord and Aerial Cable are
properly connected .
•  Make sure the batteries in remote control are not flat.
•  Press the POWERbutton to switch the TV on.
•  Switch to TV source by pressing “TV” button.
•  Run “Automatic Search ” by operating the remote
control

NP2
No Picture and No Sound
in video mode.
•  Check the connection between the optional video
equipment and the TV.
•  PressSCART , Video/S-V orCOMPONENTbutton
on the remote control to select the right video
equipment.

NP3
TV is automatically turned
off
•  Check if the “SLEEP” timer is activated .
•  Press the POWERbutton to turn on the TV once
again

PP1
Double Images /Ghosts
If the TV suffers interference from signals reflecting from
mountains or buildings , double-pictures or Ghosts will
occur.
•  Adjust the aerial’s location and direction
•  Replace it with one with better directionality.
•  Turn off or disconnect the booster if it is in use , as
the booster may be inappropriate

PP2
Snowy picture and noisy
Sound
If snow totally blocks out the picture , there may be a
problem with the Aerial or Aerial Cable .
•  Have the TV and aerial been connected properly ?
Has the aerial cable been damaged ?
•  Is the aerial pointing in the right direction ?
•  Is the aerial itself faulty ?
•  Try using a booster , as signal transmission may be
low

PP3
Distorted picture and
noisy sound
•  Turn off or disconnected the booster if it is in use , as
broadcast signals may be too strong

PP4
Dotted Lines / Stripes
in the picture
If the TV or aerial suffers interference from other
equipment , stripes or noise may appear in the picture.
•  Keep the TV away from noise sources such as
personal computer , amplifier , cars, motorcycles or
hair-dryers.
•  If the aerial suffers interference from a radio tower or
high-voltage wire , contact the local dealer.

PP5
Stripe noise .
•  Check the coaxial cable connected with the TV is not
oxidized
•  Do not use 300 ohm twin lead cables as interference
may occur
•  It is recommended to use a 75 ohm coaxial cable (not
supplied) to get premium quality picture.
•  Keep the aerial cable away from other connecting
cables

PP6
No color, too light or too
dark
•  Adjust the picture settings -  APC, Brightness,
Contrast, Saturation , Color Temp.
•  Press “RESET ” button on remote control

NS1
Good picture, no sound
•  Make sure the headphone is not connected.
•  Check audio connections between Equipment &
LCD-TV.
•  PressMUTEor VOL+ to cancel the muting.

NS2

•  Make sure that the aerial connected is 75 ohm coaxial
cable (not supplied) , not 300 ohm twin lead cables .
•  Keep the aerial cable away from other connecting
cables.
•  Press SOUNDto select “Mono” which will reduce
the noise.
•  Adjust BASSor TREBLEproperly in OSD.

NS3
No sound in TV mode
If the Country setting for the TV is incorrect , it may
prevent the sound from being issued
•  Select the Countrywhere you are located in OSD
Menu.
•  If the country is not listed in OSD , select “Other Country”.

NS4
Good picture, but noisy
sound or no sound in TV
mode.
•  If the sound of “all the channels” is noisy , run
A.P.S. again by selecting Automatic Searchin OSD.
•  If the sound of “some channels” is noisy or no
sound , select Manual Search and select an
appropriate TV systemin OSD such as B/G , D/K ,
I , L/L’ ; then , store it.
( If the sound system setting for a TV channel is
incorrect , it may prevent the sound from being issued .)

PC1
PC display is Not Full
Screen
•  Select Auto Image Adjustin OSD menu to optimize
the image .
•  If executing Auto Image Adjust still can not achieve
full screen display, adjust V.Position and H.Position
in PC mode

PC2
Horizontal Noise or Color
pattern is not uniform
•  Select Auto Image Adjust in OSD menu to optimize
the image .
•  If still no good , adjust H. Phase in OSD menu

PC3
“Out of Range” message
•  Maximum PC resolution supported is 1024x768 /
1280 x 768, so the screen will appear “Out of range”
at higher resolution.
•  Reduce the resolution to 1024x 768/ 1280x 768 from
PC .

PC4
No Sound
•  Make sure PC audio Input is well connected.

PC5
“Not Available” message
on PIP
•  If Main-Display is PC and Sub-display is
Component , resolution of the PC should be reduced
to 800 x 600 or lower ;then , the PIP will work well.

PC6
After“No Signal ”has
appeared on PC mode for a
while, the view disappears
and the “ LED Indicator”
turns from Green
to”Red”.
•  Press any key on keyboard or move the mouse to
activate the PC , because the PC may go to power
saving status.
•  Check if the D-sub connector (Cable) is disconnected or loose .

RC1
Remote Control does not
work
•  Make sure the batteries in remote control are not flat
•  Check the polarity of the batteries
•  Use the remote control in the front of the TV or from
less than seven meters away.
•  make sure the Remote Sensor Window is not under
strong lighting

RC2
Can not change channels
with the remote control
•  Press TV button to switch to TV mode.
•  Make sure the TV is not in Teletext mode

PH1
Picture suddenly Stops
Responding or abnormal
•  Press RESETbutton on remote control .
•  Unplug and then plug the Power Cord of the TV
from the AC outlet (or the Adapter from the TV).
•  If the picture still no good , execute “Initial
EEPROM”.
Press POWERkey to turn off the TV . Press“CH DN” key
on the top of LCD TV ( don’t release ) ; then, press
POWER button on remote control until “Initial
EEPROM” appears on the screen .
(Note: Remind user that every setting will be return to
factory preset mode including Child Lock , PIN No. ,
Programs)



TROUBLESHOOTING FLOW CHART [Clcik on images to Enlarge]
Power Start Not Good
NO BACK-LIGHT, BUT LED LIGHTS UP
NO PICTURE, BUT BACK-LIGHT & LED LIGHTS UP
PICTURE ABNORMAL OR HALT

Steps to Refresh EEPROM
  • Press POWER key to turn off the LCD-TV.
  • Press CH. Down key on the top of LCD-TV (don’t release) and then press POWER button on remote control, until “EEPROM Initial” appears.
  • Now, all the buttons, which you are pressing, could be loosed.

If the PIN of Child-Lock is forgotten , the only way to unlock the channels is to refresh EEPROM and the PIN will also recover initial number “1111”. Besides , all the STORE done by user will be refreshed to the situation of First Time Installation.
FRAME DEFECTS OR STRIPED LINES AT ALL SOURCES