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 !

Monday, 4 February 2019

TCL L24S10F LCD TV SERVICE MODE FACTORY MODE ALIGNMENT AND SOFTWARE UPGRADE PROCEDURE

TCL L24S10F LCD TV service mode factory mode alignment and software upgrade procedure


How to enter service mode – Factory mode – adjustments – firmware update TCL L24S10F – 24 inch LCD TV
MS19C-AP/MS19C-LA is our latest design especially for LCDTV products selling in Asia Pacific (AP) / Latin America (LA) market. It features by its high integration, easy debugging as well as convenience in terms of maintenance. Fast software upgrade through USB disk facilitates both manufacture and after service.
Meantime, a variety of functions involved in Factory Menu (FM) and Design Menu (DM) cannot only bring benefits for production, but also satisfy various demands of customer.

Factory mode

Accessing way: a. Press the Menu button of remote control, then select Contrast item of Picture sub-menu. Finally, press 9, 7, 3, 5 consecutively.
b. When the FAC HOTKEY item of Factory Menu is enabled (ON), press Go Back button of remote control.

ADC Menu
Press the [Up/Dn] button in remote control to select certain item and [Right/Left] to change the value of ADC data or start ADC calibration.
Note: Only YPBPR and PC source should be calibrated.
Design Menu
Accessing way:
1. In the first place, press Menu button of remote control, then select Contrast item of Picture sub-menu. Finally, press 1, 9, 5, 0 consecutively.
2. When the DESIGN HOTKEY item of Design Menu is enabled (ON), press Go Back button of remote control.
Press the [Up/Dn] button in remote control to select certain item and [Right/Left]  to toggle among or execute the available options.
SHOP MENU
Contain many options which can be chosen according to the requirements of customers as default settings when leave factory.
Press the[Up/Dn] button in remote control to select certain item and [Right/Left] to toggle among the available options. 
SERVICE MENU
Press the [Up/Dn] button in remote control to select certain item and [Right/Left] to toggle among the available options.
The steps of debugging
Device
Color Analyzer CA-210. Video Pattern Generator Chroma2329. Color TV Pattern
Generator PM5418, VGA cable, AV cable(RCA),YPBPR(RCA) cable.

Steps of debugging
According to the requirement of order, we suggest take the below steps to finish the appropriate settings.
A Enter the Factory Menu, enable FAC HOTKEY.
B Check the version of software, release date displayed at the bottom of Factory Menu.
C enter Design Menu, choose SERVICE MENU > Project ID, choose corresponding Project ID number of the product (Please refer to the description in BOM about Project ID number).
D return to Factory Menu, check the Product model.
E choose Factory Menu > NVM RESET and press the Right button and wait until prompt OK appears.
F restart the set
G according to the requirement of order, set the items of SHOP INIT and Hotel Menu etc.
H After aging under normal temperature calibrate ADC and adjust white balance.
I Choose Factory Menu > SHOP and press the Right Button of remote control to initialize the set.
Note: after step I (execute shop), Hotel Menu will be disabled by default. Therefore, if order requires hotel function, it is necessary to enable hotel function by set Design Menu > Service Menu >HOTEL ENABLE to ON.
ADC Calibration
Signal and generator
VGA: Chroma2329 Pattern42, Timing 14(1024x768@60Hz 5 MOSAIC)
YPBPR: Chroma2329 Pattern103, Timing 79(100% Color Bar, 720p)
1) Access to the Factory menu->ADC
2) Select PC source
3) Select AUTO TUNEˈ Press the Right button in your remote control to calibrate the ADC automatically.
4) Select YPBPR source
5) Repeat step 3.
6) When the OK appears the calibration has been finished successfully.
White Balance adjustment
Before adjustment, you must ensure Color Analyzer has been calibrated. Only AV1, YPBPR, VGA , HDMI 1 need to be adjusted. It is necessary to adjustment HDMI 1 first.
Signal and generator
The pattern of the signal should be used are White (Chroma2329 pattern113) and Grey (pattern 114).The format of signal are respectively 720p for HDMI1
(Chroma2329 Timing 69), NTSC for AV1 (Chroma2329 Timing 37),1024×768@60Hz
(Chroma2329 Timing 14) for VGA and 720p (Chroma2329 Timing 79)for YPBPR
Steps of adjustment
1) enter the factory menu-> White Balance, select source HDMI 1 and COLORTEMP normal.
2) input grey signal in 720p format
3) change R OFFSET and B OFFSET to make sure the value of color coordination equal to (x=280+/-5,y=290+/-5).
4) Input white signal in 720p format
5) Change R Gain and B Gain to make sure the value of color coordination equal to (x=280+/-5,y=290+/-5)
6) Repeat step 2~5 until both of the value of color coordination of white and grey equal to (x=280+/-5,y=290+/-5).
In addition to select COLORTEMP COOL/WARM, the adjustment method of COOL and WARM color temperature is same with that of NORMAL. The color coordination it is recommended for COOL and WARM color temperature is respectively (270+/-5,270+/-5) and (300+/-5, 305+/-5). Except select corresponding SOURCE and signal, the method of white balance adjustment for AV1, VGA and YPBPR is same with that of HDMI 1
HDMI White Balance adjustment
ADC Calibration and White Balance Adjustment (automatic)
The process of adjusting ADC and White Balance automatically is out of the range of this file. Please refer to the relevant technical file of HuiZhou factory of TCL
Chip list of software programming before SMT
Following chips must be programmed before SMT by ALL-11 or other tools.
Note:
1) the software for U202( Flash software) and U203 (HDCP) of Main Board can be program using ISP tool.
2) Please check HDCP function in the process of production.
3) EDID of VGA and HDMI source are integrated in the software for U202, therefore, there is no need to program extra EDID software for MS19C-AP/LA chassis.
Software upgrade through USB disk
Way 1
1) Ensure the software you are using has a correct file name (if the resolution of panel is 1920*1080, the software name should be TCL_MS19C_UPDATE_FHD.bin, if resolution is 1366*768, file name should be TCL_MS19C_UPDATE.bin, copy it to the root directory of a USB disk.
2) Insert the USB disk to the USB socket of the set for which you are going to upgrade program.
3) Enter the Factory Menu, select USB UPDATE, press the Right button of remote control to start upgrade.
Way 2: 
1) Please ensure the software you are using has a correct file name (if the resolution of panel is 1920*1080, the software name should be TCL_MS19C_UPDATE_FHD.bin, if resolution is 1366*768, file name should be TCL_MS19C_UPDATE.bin, copy it to the root directory of a USB disk.
2) Insert the USB disk to the USB socket of the set for which you are going to upgrade program.  Press CH (--) button in key board and switch on at the same time. Wait for 10 seconds then let off the CH- button to start upgrade.
Note:
It is recommend you use former way to upgrade if the set can work properly.  In some circumstances, such as no picture, however, the set cannot be upgraded successfully by means of the former way, the later way can be an alternative. Over the course of upgrade, power supply cannot be cut off. Otherwise, to upgrade program, it is necessary to adopt ISP tool. After upgrading the software, please restart the set (power off then power on) in order to ensure the correct EEPROM data. Left figure shows the prompt after upgrade.