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 !

Friday, 22 March 2019

LG 32LC41 - 32LC42 - 32LC43 - 32LC44 - CHANNEL MEMORY DOWNLOAD & EDID / DDC DOWNLOAD - WHITE BALANCE ADJUSTMENT

LG 32LC41 - 32LC42 - 32LC43 - 32LC44 - CHANNEL MEMORY DOWNLOAD & EDID / DDC DOWNLOAD - WHITE BALANCE ADJUSTMENT




CHANNEL MEMORY DOWNLOAD

  • Connect the download jig to D-sub jack.
  • Execute ‘Channel.vi2c’ program in PC, then a main window will be opened.
  • Push the button change and select the Channel memory data.
  • Check the communication is OK or not.
  • Push the Read area (Ackn. Check) and check Cyan area is OK message.
  • Push the Update NVM from File.

EDID (The Extended Display Identification Data ) /DDC (Display Data Channel) download
Caution
Use the proper signal cable for EDID Download.
Never connect HDMI & D-SUB Cable at the same time.
Use the proper cables below for EDID Writing.

Sequence of Adjustment
  • DDC data of Analog-RGB
  • Init the data.
  • Load the EDID data. (Open file) [Analog - RGB : LP78A_RGB.ANA] [Digital - HDMI : LP78A_HDMI.DVI]
  • Set the S/W as below.
  • Push the “Write Data & Verify”button. And confirm “Yes”.
  • If the writing is finished, you will see the “OK” message.
WHITE BALANCE ADJUSTMENT
Required Equipment
  1. Remote control for adjustment
  2. Color Analyzer (CA-110 or CA-210 or same product)
  3. Auto W/B adjustment instrument(only for Auto adjustment)
Connecting diagram
Enter the DDC adjust mode
  • Enter the DDC adjust mode at the same time heat-run mode when pushing the power on by power only key.
  • Enter the adjust mode and change the input mode to AV (ZA : AV3, TA,MA : AV2)when pushing the Front AV key
  • Maintain the DDC adjust mode with same condition of Heat-run à Maintain after AC off/on in status of Heat-run pattern display.
Release the DDC adjust mode
  • Release the adjust mode after AC off/on or std-by off/on in status of finishing the Hear-run mode.
  • Release the Adjust mode when receiving the aging off command(F3 00 00) from adjustment equipment.
  • Need to transmit the aging off command to TV set after finishing the adjustment.)
(For Manual adjustment)
Operate the zero-calibration of the CA-110 or CA-210, then stick sensor to LCD module when you adjust.
For manual adjustment, it is also possible by the following sequence.
  1. Select RF no signal by pressing “POWER ON” key on remote control for adjustment then operate heat run more than 15 minutes.  (If not executed this step, the condition for W/B will be differ. The W/B condition is Picture Mode : Standard (MA : Optimum), Color Temp : Normal. )
  2. Changing to the av mode by pushing the input or front AV key.
  3. Display the internal pattern of the VCT-Pro IC by pushing the IN-START.
  4. Stick sensor to center of the screen and select each items (Red/Green/Blue Gain and Offset) using D/E (CH+/-) key on R/C.
  5. Adjust R Gain / B Gain using F/G (VOL+/-) key on R/C.
  6. Adjust it until color coordination becomes as below. (Initially, R/G/B gain and R/G/B offset values are fixed as below)
Red Gain : 80 , Green Gain : 80 , Blue Gain : 80
Red Offset : 80, Green Offset : 80 , Blue Offset : 80
  • Target Value [Picture Mode : Standard (ZA, TA),
Optimum(MA), Color Temp: Normal]
Normal (9300K) x ; 0.283±0.003 y ; 0.298±0.003
Luminance(Y) AV : upper 150 cd/m2 (Typ : 350 cd/m2≥)
  • Reference Value(Automatically fixed)
Cool(11000K): x:0.274±0.003, y: 0.286±0.003
Warm(7200K) : x:0.303±0.003, y: 0.319±0.003
When adjustment is completed, Exit adjustment mode using EXIT key on R/C.
Posted By: FRANK at 03:45
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