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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Wednesday, 11 December 2019

SANYO 40R40HD LCD TV SERVICE MODE ADJUSTMENTS – SMPS SCHEMATIC



LCD-40R40HD Sanyo 1 682 349 79: PAL/SECAM NTSC(AV)
Display of a fixed picture for a long time may cause a permanent after-image on the screen, as commonly called “ghost shadow”. The degree of the after-image varies with the maker of LCD screen. This phenomenon doesn’t represent failure. This “ghost shadow” may remain in the picture for a period of time (several minutes). But when operating it avoid displaying still picture in high brightness for a long time.
Test voltage of power supply
 Main board of non BBY model of which dimension is 26” or bigger than 26”
According to wiring diagram ‘9242KC4201JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set.
Test voltage of socket X302 each pin in turn, voltage value as Table below.
Main board of non BBY model of which dimension is smaller than 26”
According to wiring diagram ‘9222KC4201JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set.
Test voltage of socket X302 each pin in turn, please refers to voltage value as Table 3.
Main board of BBY model of which dimension is 19” and 22”.
According to wiring diagram ‘9219KC7201JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set.
Test voltage of socket X302 each pin in turn, please refer to voltage value as Table 4.
Main board of BBY model of which dimension is 24”.
According to wiring diagram ‘9224KC7001JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set.
Test voltage of socket X301 each pin in turn, please refer to voltage value as Table 5.
Main board of BBY model of which dimension is 32” and 37”.
According to wiring diagram ‘9232KC7001JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set.
Test voltage of socket X302 each pin in turn, please refer to voltage value as Table 6.
Unit adjustment
According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ , ‘9224KC7001J’ or ‘9232KC7001JL’, connect main board, power board, key board and IR board correctly, switch on power supply, check if display is normal.
 Instruction of factory menu
a - First press key ‘Program source’, then press number keys  2,5,8,0 
in turn to enter initial factory menu;
b - Press keys ▲/▼ to move cursor to each adjustment page of initial factory menu, then press ► to enter into its adjustment menu;
c - Press keys ▲▼ to move cursor upwards or downwards within any adjustment page;
d - Press keys ◄► to adjust any item when cursor is moved onto it;
e - Press key “Menu” to exit to initial menu from any adjustment page;
f - Press key “Exit” to exit from factory menu in any case;
g - Set item “Aging Mode” as “On” to enter into factory aging mode.
White balance adjustment
Before adjustment
The unit should be working for above 30 minutes to be in stable state; Use apparatus CA210 to adjust white balance;
For model of which dimension is bigger than 26”, only 9300K color temperature (that is “normal”) is needed adjustment, To guarantee BBY test requirements to be met when color temperature are 12000K and 6500K, make sure that chromaticity coordinates of bright scale are (X=285±5, Y=293±8) and chromaticity coordinates of dark scale are (X=285±8, Y=293±12);
For model of which dimension is 26” or smaller than 26”, only 8000K color temperature (that is “normal”) is needed adjustment, To guarantee test requirements to be met when color temperature are 9300K and 6500K, make sure that chromaticity coordinates of bright scale are X=295±5, Y=305±8) and chromaticity coordinates of dark scale are (X=295±8, Y=305±12).
White balance adjustment of HDMI channel
Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854
PAT is 921), enter into sub-menu “color temperature adjustment” of factory menu;
For model of which dimension is bigger than 26”, select “normal” color temperature (that is 9300K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3rd scale as 285±8, 293±12 and guarantee luminance within the range of 3 nit to 5 nit; fix item “G GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3rd scale as  285±8, 293±12 ; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until
chromaticity coordinates of both scales are all 285, 293;
For model of which dimension is 26” and small than 26”, select “normal” color temperature (that is 8000K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3rd scale as 295±8, 305±12 and guarantee luminance within the range of 3 nit to 5 nit; fix item “G GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3rd scale as 295±5, 305±8; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until chromaticity coordinates of both scales are all 295, 305;
Set item “ALL COLOR” as “ON” after completing adjustment.
White balance adjustment of YPbPr channel
ADC calibration of SD mode: Input color-bar signal with format of 480i/60 Hz (VG848: Timing is 968,PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly,
so it is necessary to do the calibration again; ADC calibration of HD mode: Input color-bar signal with format of 1080i/60 Hz (VG848: Timing is 972,PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are
abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
White balance adjustment: Input 16-grey-scale signal with format of 1080i/60 Hz (VG848: Timing is 972,PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, adjust white balance for model of which dimension is 26” bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
White balance adjustment of VGA channel
Auto-calibration: Input square signal with format of 800×600/60 Hz (VG848: Timing is 854,PAT is CROSS) to do calibration automatically in order to make window filled with picture;
ADC calibration: Input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854,PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
White balance adjustment: 
Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854 PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, to adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
White balance adjustment of AV channel
Input 16-grey-scale signal with format of PAL (VG848: 
Timing is 969 PAT is 921, check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
Auto-white balance adjustment
ADC pre-calibration
Enter into factory menu, set “Program source” as “YPbPr”, input color-bar signal with format of 480i/60 Hz VG848: Timing is 968 PAT is 918  enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically; input color-bar signal with format of 1080i/60 Hz (VG848: Timing is 972 PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration
automatically,
Press key “Menu” to be back to upper menu, set “Program source” as VGA”, input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854 PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically,
White balance adjustment (models except LC-19KC72, LC-22KC72)
TV set should be working for above 30 minutes to be in stable state before white balance adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the connection can be altered and saved in administrator window with password “xoceco” if necessary); output signal of VG848 must be sent to AV, YPbPr, VGA and HDMI1 channels of TV; Open program file “White_Balance.exe”, load configure file “AdjustConfig.txt”, then connect CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to “MEAS” after prompt “CA-210 connection and calibration are normal. appears on the left-down side;
BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by CA210; please enter into administer window with password “xoceco” to alter and save apparatus setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until prompt “Adjustment is successful” appears.
White balance adjustment (models except LC-19KC72, LC-22KC72)
TV set should be working for above 30 minutes to be in stabler state before white balance adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the connection can be altered and saved in administrator window with password “xoceco” if necessary); output signal of VG848 must be sent to AV, YPbPr, VGA and HDMI1 channels of TV;
Note: Channel shared by AV/YPBPR must be adjusted respectively.
Open program file “White_Balance.exe”, if current working progress includes AV channel, enter into channel setting of administer window to make sure no YPBPR576i@60 but AV is chosen, or load configure file “AdjustConfigAV.txt”; 
if current working progress includes YPBPR channel, enter into channel setting of administer window to make sure no AV but YPBPR576i@60 is chosen, or load configure file “AdjustConfigYPBPR.txt.txt”; then connect CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to “MEAS” after prompt “CA-210 connection and calibration are normal. appears on the left-down side;
BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by CA210; please enter into administer window with password “xoceco” to alter and save apparatus setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until prompt “Adjustment is successful” appears.
SMPS Schematic
Software update
1. Save upgrade file “flash.img” into the root directory of a U disk;
2. Insert the U disk into USB port of TV set, press key “power” until TV set is in “standby” state, then power on TV set again;
3. Press key “program source” until menu “program source” display, then press keys 2,5,8,0 by turn to enter into factory menu.
4. Press keys of remote control Up/Dn to select item “ISP”, press key “enter” to begin updating progress, a prompt “Updating, Pls, Wait…” is  displaying, wait for a while until menu display.
5. TV set will auto-reset after completing update, according to step1 and step 2, enter into factory menu again to confirm updating completion by checking the time of update file.