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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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

SAMSUNG - PS42Q91HX – PS50Q91HX – PDP TV - WHITE BALANCE ADJUSTMENT

SAMSUNG - PS42Q91HX – PS50Q91HX – PDP TV - WHITE BALANCE ADJUSTMENT


WHITE BALANCE CALIBRATION
If picture color is wrong, do calibration first.
Execute calibration in Factory Mode
  1. Source : VIDEO
  2. Setting Mode : PAL Video (MODE : #2)
  3. Pattern : Pattern #24 (Chess Pattern)
  4. Use Equipment : K-7256 or Equipment of equality level.
  5. Work order
  • Enter by Factory Mode select "1. CALIBRATION".
  • Select "AV CALIBRATION" again in CALIBRATION MENU.
  • After Completing Calibration, come out "Av success". OSD on the screen (bottom-side) for about 3 seconds.
  • Source AV : PAL composite, Component : 1280*720/60Hz PC : 1024*768/60Hz.
WHITE BALANCE ADJUSTMENT
  • If picture color is wrong, check White Balance condition.
  • Equipment : CA210, Patten : Toshiba
  • Adjust W/B in Factory Mode
  • Sub brightness and R/G/B Offset controls low light region
  • Sub contrast and R/G/B Gain controls high light region
  • Source AV : PAL composite, Component : 1280*720/60Hz, HDMI[DVI] : 1280*720/60Hz
[ Test Pattern : MSPG-945 Series Pattern #16 ]
Color temperature [1500K +/-500, -6 ~-20 MPCD]
Color coordinate [H/L : 270/280 +/- 2 L/L : 270/280 +/- 3, 2.1 Ft +/-0.05 Ft]
CONDITIONS FOR MEASUREMENT
On the basis of toshiba ABL pattern : High Light level (57 IRE)  INPUT SIGNAL GENERATOR : MSPG-925LTH
Mode No 2 : 744X484@60 Hz
No 6 : 1280X720@60 Hz
No 21 : 1024X768@60 Hz
Pattern No 36 : 16 Color Pattern
No 16 : Toshiba ABL Pattern.

Optical measuring device : CA210 (FL)
Use the MSPG-925 LTH generator for model PS-42Q91H, PS-50Q91H.
ADJUSTMENT METHOD
Adjust the white balance of AV, Component and DVI Modes.
(AV →Component)
[a] Set the input to the mode in which the adjustment will be made (RF →DTV →PC →DVI).
 Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16
DTV, DVI Mode : Model #6 (1280*720 Mode), Pattern #16
HDMI Mode : Model #6 (1280*720 Mode), Pattern #16
[b]  Enter factory color control, confirm the data.
[c]  Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)
Adjust sub - Brightness to set the 'Y' value.
Adjust red offset ('x') and blue offset ('y') to the color coordinates.
Do not adjust green offset data.
[d] Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
Adjust red gain ('x') and blue gain ('y') to the color coordinates.
Do not adjust the green gain and sub-contrast (Y) data.
REPLACEMENTS & CALIBRATION
Click on pictures to Enlarge
Posted By: FRANK at 05:00
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