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 !

Saturday 9 March 2019

SHARP LC-32SV21L - LC-42SV31L SERVICE MODE SOFTWARE UPDATE AND POWER SUPPLY CIRCUIT

SHARP LC-32SV21L - LC-42SV31L SERVICE MODE SOFTWARE UPDATE AND POWER SUPPLY CIRCUIT


SHARP LC-32SV21L - LC-42SV31L 

SERVICE MODE SOFTWARE UPDATE AND POWER SUPPLY CIRCUIT 


SERVICE MODE
HOW TO ENTER TO SERVICE MODE
Turn on the TV, press “Menu”, then press number key 1 + 9 + 9 + 9 and “RETURN”, it will achieve the factory mode. Select the item of Current source and press right key to choose computer
ADC Adjustment and White Balance Adjustment
It’s no need to do the white balance for this model, do ADC only.
1. Turn on the TV, press “Menu”, then press number key 1 + 9 + 9 + 9 and “RETURN”, it will achieve the factory mode. Select the item of Current source and press right key to choose computer
2. Select the item of WD Pat, choose 80(80IRE), fix the item of Scalar G Gain, adjust the item of Scalar R B Gain, choose Color temp. and press right key to continue adjustment; Choose 20(20IRE), fix the item of Scalar G Offset, adjust the item of Scalar R B Offset, choose Color temp. and press right key to continue adjustment.
Normal
Warm
Cool
x (center)
0.2850 ± 0.0090
0.3130 ± 0.0090
0.2740 ± 0.0090
y (center)
0.2930 ± 0.0090
0.3210 ± 0.0090
0.2740 ± 0.0090

SOFTWARE UPGRADE PROCEDURE
FW Upgrade
Step 1: Ready for F/W Upgrade
1.1 Change the software file name to ” upgrade.pkg” ,eg:
1.2 Prepare a USB memory (The file system of USB memory must be FAT16 or FAT 32).
1.3 Copy the file (upgrade.pkg) from your computer to the USB memory root directory, and remove it from computer’s USB port!
Note: 1) Note the version of this F/W before you change the software file name.
2) The software file name must be changed, or TV can’t detect the F/W.
Step 2: F/W Upgrade
2.1 AC on (Power plug)
2.2 Plug the USB memory on the USB port on the side I/O port of TV.
2.3 TV AC power off   AC power on
2.4 TV will upgrade by itself after detect the USB drive condition and the content of the pkg file.
Note: TV’s LED will flash during upgrade process
2.5 After finish upgrade process, TV will reboot by itself.
2.6 Remove USB drive from TV.
2.7 Check if the software version is correct.
2.8 If the FW version is correct, please do factory reset in user menu.
The Writing VGA & HDMI EDID
Step1. Ready for writing EDID
Tool: 715G089-B/C
Cable: a USB cable, a VGA cable, and a DVI to HDMI cable.
Step2. Connection for VGA EDID writing and turn on the TV
Step3. Install TPVedid tool.
3.1 Read the VGA EDID file.
3.2 Select “FtdiUSB” communication type. And test the EDID.
3.3 Start to write EDID.
3.4 Click “Read EDID”.
Step4. Click “FPD” to open another interface as follows to check the whether the info is the same as you loaded previously.
Step5. When the tool displays “NG” in the yellow blank, which represent writing failly. Please check the whether the connection of tool and cables is nomal and retry. Another way is to change a new ISP board and retry.
Step6. Write HDMI EDID.
1. Connection for writing HDMI EDID.
2. Because the TV has three HDMI ports, please connect the “DVI to HDMI” cable to corresponding HDMI port and load correct EDID file one by one.
3. The other steps are the same as VGA EDID writing. Please refer to the above steps to write EDID for HDMI port.( HDMI2, written steps are the same with HDMI1)
POWER SUPPLY CIRCUIT 

LC-32SV21L

LC-42SV31L 

CLICK ON THE IMAGES TO ZOOM IN
Posted By: FRANK at 04:12
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