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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday, 25 February 2019

THOMSON - 20LCDB03B - TELEFUNKEN - SABA_FERGUSON - BRANDT - SERVICE MODE


THOMSON - 20LCDB03B - TELEFUNKEN - SABA _ FERGUSON - BRANDT - SERVICE MODE


APPLICABLE TO - THOMSON - 20LCD B3B - TELEFUNKEN  - SABA - FERGUSON - BRANDT TVs

ENTERING SERVICE MODE {supports 15", 20" and 20" bi-sonic.}

  • Press the "Menu" button and the screen will appear.  "Overview" below as Figure Overview OSD.
  • Press "Info" button and "1", "0" and "3" buttons step by step to enter Service Mode.  Service mode will appear on the screen.
  1. Color Temp:  P-N means 'Normal' on Ypbpr1, V-N means 'Normal' on video mode.  Each item decide different gamma curve.  
  2. Red drive, Green drive and Blue drive, means gamma RGB gain control by scaler.
  3. Red-offset, Green-offset and Blue-offset means gamma RGB offset.
  4. Reset to Default => Press "OK" button will load all default value on user OSD.
  5. Calibration => Press this both guide to calibrate A/D converter, white/black level on PC input.  Also guide to calibrate A/D converter Pb,Pr offset on YpbPr input.  
  6. Auto turn on => Toggle On/Off control auto turn On.  This function for factory burn-in sets.  Only active on selection PC input then main power Off.
  7. Green lable => Tuner S/W version, time when compiling S/W model name, main S/W version.
  8. OSD position => OS Didplay posistion selection.
  9. Factory Save => Press 'OK' to save all parameters on service mode.
  10. Auto Adjustment => Auto adjustment new timing (Position, Phase etc).  Only active on PC mode.
  11. Video int Gain => This slider bar used to align brightness spec: of video mode.  larger value bring to brighter.  Control by video decoder VPV3230.
  12. Color => Adjust color saturation.  Same function on User OSD.  Control by video.
  13. Tuner set V-Level => not used.
  14. Tuner Get V-Level => not used.
  15. Set First Installation => Enable means TV will pop-up installation OSD at next Power On.
  16. Tuner Set Factory Programs => not used.
  17. Exit =. To Exit from Service Mode.
  18. PW Gamma => Gamma curve selection.  'Automatic' means, pick up proper gamma curve automatically when user choose Normal, Warm and Cool. Value change is not recommended.
  19. Scale Mode => Screen ratio selection.
  20. VPC AGC On => Turn On video decoder "Auto gain control" {Analog input leve adjustment}
  21. VPC AGC Off => Turn OFF Video decoder "Auto gain control".
  22. HV Lock sensitivity => Tuner HV sync sensitivity.  Value chang not recommended. Fake program be detected or Real Program be skipped.
  23. Color Delay => Color timing delay, which only impact on video mode.  For development only.  Value change not recommended. 
  24. Audio gain => not used.
  25. Pb offset => Adjust Pb offset on YpbPr input.
  26. Pr offset => Adjust Pr offset on YpbPr input.
  27. Enter PW 1230 adjustment page => De interlacer parameters control.  For development only.  Value change is not recommended.
  28. Video Format => Select video standard.  Force to 'Auto'.
  29. Default language => Set default language.  Same function on user OSD.
  30. RGB filter => Sharpness filter for PC port of scaler.  Impact on PC and YpbPr input.
  31. Video filter => Sharpness filter of video of scaaler.   Impact on TV Video and YcbCr.
  32. Monitor sync => Force to "On". So that video format can auto detection.
  33. Reset all NVRAM => Press "OK" will reset all parameters is on service mode, including color temperature settings, brightness settings...etc.
  34. Test pattern => Display test pattern which generate by scaler. Only active on PC source. 
  35. H.Position => Adjust Horizontal Position when PC source in.
  36. V.Position =>Adjust Vertical Position while PC source in.
  37. Left Time => Left time means the time added by standby + TV On.  The right item display the time of TV-On only.
  38. Project code => As title.
  39. Panel resolution => As title.
  40. NvRam ver => display EEPROM data version.
  41. HVX Res/Hfreq => Timing information.  Resolution and H clock.
  42. HXV Total => Timing information.
  43. Mode Num => Timing information. Sequence of timing chart.
  44. DCLK => Timing information Data Clock.  These 4{41,42,43 & 44} items above are for development check only.  
  45. Factory Save => Saves factory parameters.
  46. Green Label => Display tuner S/W version
Posted By: FRANK at 02:19
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