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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Monday 25 March 2019

XOCECO PRIMA LC3267P LC32FB32 SERVICE MODE FIRMWARE UPDATE WHITE BALANCE ADJUSTMENT

XOCECO PRIMA LC3267P LC32FB32 SERVICE MODE FIRMWARE UPDATE WHITE BALANCE ADJUSTMENT



TO ENTER SERVICE MODE [FACTORY MODE]

  • Connect the digital board, analog board, video processing board, button board and remote control receiver board according to the wiring diagram 203-L27FB18-01JL or 203-L32FB18-01JL. Connect with power and observe the display.
  1. Press ”VOL” button to decrease the volume to 0, then press”9876” to enter level one factory menu.
  2. Press ”CH+” and “CH-“ to select adjustment page, then press “OK” to access. 
  3. Press “CH+” and “CH-“ to move cursor up and down, when the cursor stays on a certain adjustment item, press “VOL-“ and “VOL+” to adjust.
  4. Press “MENU” exit to the level one factory menu; press “EXIT” to exit from the factory menu at any situation.
Note: channel switch isn't available at adjustment menu, only after return to level one factory menu, you can switch channel.
WHITE BALANCE ADJUSTMENT
  • Input 16 level gray-scale signal from VG849 to HDMI channel (TMIING: select a support format of HDMI), enter white balance adjustment page of factory menu, select cool color temperature of item, fixed WBGG_HDMI to 50H, adjust WBRG_HDMI, WBBG_HDMI, let the color coordinate of third level on the right be (270,283) at 400nits; fixed WBBO_HDMI to 50H, adjust WBRO_HDMI, WBGO_HDMI, let the color coordinate of third level on the left be (270,283) at 5nits.  The brightness of 400nits and 5nits may obtain by adjusting the contrast and brightness of menu.
  • Input 16 level gray-scale signal from VG849 to AV channel (TMIING:968), enter white balance adjustment page of factory menu, select cool color temperature of item, fixed WBGG_NTSC to 50H, adjust WBRG_NTSC, WBBG_ NTSC, let the color coordinate of third level on the right be (270,283) at 400nits; fixed WBBO_ NTSC to 50H, adjust WBRO_ NTSC, WBGO_ NTSC, let the color coordinate of third level on the left be (270,283) at 5nits. The brightness of 400nits and 5nits may obtain by adjusting the contrast and brightness of menu.
  • Input 16 level gray-scale signal from VG849 to VGA channel (TMIING: select a support format of VGA), enter white balance adjustment page of factory menu, select cool color temperature of item, fixed WBGG_VGA to 128, adjust WBRG_ VGA, WBBG_VGA, let the color coordinate of third level on the right be (270,283) at 400nits; fixed WBGO_VGA to 128, adjust WBRO_VGA, WBBO_VGA, let the color coordinate of third level on the left be (270,283) at 5nits. The brightness of 400nits and 5nits may obtain by adjusting the contrast and brightness of menu.
  • Input 16 level gray-scale signal of 480I from VG849 to YPbPr channel, enter white balance adjustment page of factory menu, select cool color  temperature of item, fixed WBRG_YPbPr480I, WBGG_YPbPr480I, WBBG_YPbPr480I to 128, and WBRO_YPbPr480I to 128, adjust  BRO_YPbPr480I, WBBO_YPbPr480I, let the color coordinate of third level on the left be (270,283) at 5nits. The brightness of 5nits may obtain by adjusting the contrast and brightness of menu.
  • Repeat the operation above until the white balance pass muster.
Note: the white balance adjustment of VGA and YPBPR must be done at the situation that the white balance adjustment of HDMI is accurate.
SOFTWARE UPGRADING
  • Connect RS-232 cable to computer and TV set. The cable must be a female to female RS-232 cable, and the line is TXD to RXD and RXD to TXD cross-link. It’s popular for PC to PC connection.
  • If the computer has no RS-232 serial port (e.g. Notebook PC),you needs a additional USB to serial port cable.
  • Copy the update tools (iDev.exe) to the path you want to do it, and double click it.
  • Select “setup” menu.
  • Confirm the Serial port is right. Base on the port which using for update. And set the band rate to 115200 (default).
  • Select the “Image path” menu.
  • Confirm it’s the right file.
  • If it’s not right(Maybe you didn’t select it before),click the “…”button to select “*.ecc” file. Sometimes the image file you got it will be “*.rar ”or “*.zip” zip file, needs unzip it first.
  • You also can click the setup button to select and config, but please don’t select the red one(update boot sector).
  • Click the “down” button.
  • You can see the “waiting” window.
  • Power (off then) on the TV set.
  • After download, it will be burning.
  • Finished
  • Press the (IR/ locate keypad) power key and holding for several second to force power off TV set, then power on again. It would be ok now. If it’s failure you can try once again.
Posted By: FRANK at 03:09
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