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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Tuesday, 5 February 2019

TCL LCD32B67 HOW TO ENTER SERVICE MODE – ADJUSTMENTS – SMPS AND AUDIO OUTPUT SCHEMATIC

TCL LCD32B67 How to enter service mode – adjustments – SMPS and Audio Output schematic

TCL LCD32B67 SERIES LCD TV MONITOR – Factory mode – Adjustments - SMPS ADPF24180A2, Power, LVDS and Audio Output circuit diagram
How to enter Service Mode (Factory Mode)
Press Number key 100 > 9 > 9 > 9 will into the factory mode.
Press the Menu key.
The OSD will show menu and a word F at Right top of Menu.
Service mode adjustments
WHITE-BALANCE, LUMINANCE ADJUSTMENT
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance ,please setting the Chroma-7120 MEM. Channel 1 to 9300 color, MEM.  channel 2 to 6500 color, MEM. channel 3 to 11000 color,and MEM. channel 4 to 9300 color, ( our 9300 parameter is x = 283 ± 20, y = 297 ± 20, Y = 350 ± 7 cd/m2 ; 6500 parameter is x = 313 ± 20, y = 329 ± 20, Y = 350± 7 cd/m2 ; 11000 parameter is x = 274 ± 20, y = 286 ± 20, Y = 460 ± 7 cd/m2 ;9300 parameter is x = 283 ± 20, y = 297 ± 20, Y = 460 ± 7 cd/m2;7000 parameter is x = 305 ± 20, y = 320 ± 20, Y = 460 ± 7 cd/m2 )
How to setting MEM.channel you can reference to Chroma-7120 user guide or simple use “ SC” key and “ NEXT” key to modify x,y,Y value and use “ID” key to modify the TEXT description
Following is the procedure to do white-balance adjust.
Press Number key 100  9  9  9 will into the factory mode, and press Menu key the OSD will show menu and a
word F at Right top of Menu.
In the factory mode select MORE function will into Bias and Gain adjustment.
1. ADC Adjustment:
AL > Auto level adjust.
RG, GG, BG > R, G, B Gain adjust.
RB, GB, BB > R, G, B Bias adjust.
2. SCALER Adjustment:
CO, BR > Contrast and Brightness adjust.
RG, GG, BG > R, G, B Gain adjust.
RB, GB, BB > R, G, B Bias adjust.
S9, S6, ST , SH > Save 9300, 6500, 9300 color temperature.
R9, R6, RT , RH > Recall 9300, 6500, 9300 color temperature.
BI > Setup Burn-in mode ON / OFF .
ISP > Set ISP ON/OFF .
PP > Set PIP ON/OFF .
WH > Set Wireless Headphone ON/OFF .
SR > Set SRS ON/OFF.
CC > Set Close Caption ON/OFF.
VC > Set V Chip ON/OFF.
EX > Exit MORE function to factory mode menu.
SMPS ADPF24180A2 schematic
Power
LVDS
Audio output
Bias (Low luminance) adjustment :
1. Press “ AUTO” button ,
2. Set the contrast on OSD window to the value=51 , color (user )R,G,B set to “50”
3. adjust the brightness on OSD until chroma 7120 measurement reach the value Y>390 cd/m2
Gain adjustment 
A. Adjust 9300 color-temperature
1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma-7120 Y>390 cd/m2
2. Switch the chroma-7120 to RGB-mode (with press “MODE” button )
3. Switch the MEM.channel to Channel 01 ( with up or down arrow on chroma-7120 )
4. The LCD-indicator on chroma-7120 will show x = 283 ± 20, y = 297 ±20, Y = 350 ± 7 cd/m2
5. Adjust the Color (user) Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure (Item 5, 6, 7) until chroma-7120 RGB value meet the tolerance =100±2
9. Switch the chroma-7120 to xyY mode with press “MODE” button
10. Press Color (9300) on OSD window to save the adjustment result.
B. Adjust 6500 color-temperature
1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma-7120 Y>390 cd/m2
2. Switch the chroma-7120 to RGB-mode (with press “MODE” button )
3. Switch the MEM.channel to Channel 02 (with up or down arrow on chroma-7120 )
4. The LCD indicator on chroma-7120 will show x = 313 ± 20 y = 329 ± 20, Y = 350 ± 7 cd/m2
5. Adjust the Color (user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user)Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color (user)Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure ( item 5,6,7) until chroma-7120 RGB value meet the tolerance =100 ± 2
9. Switch the chroma-7120 to xyY mode with press “MODE” button
10. Press Color (6500) on OSD window to save the adjustment result.
C. Adjust 11000 color-temperature
1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma-7120 Y>390 cd/m2
2. Switch the chroma-7120 to AV-mode (with press “MODE” button)
3. Switch the MEM.channel to Channel 03 ( with up or down arrow on chroma-7120 )
4. The lcd-indicator on chroma-7120 will show x = 274± 20, y = 286 ± 20, Y = 460 ± 7 cd/m2
5. Adjust the Color (user) Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure ( item 5,6,7) until chroma-7120 RGB value meet the tolerance =100 ± 2
9. Switch the chroma-7120 to xyY mode with press “MODE” button
10. Press Color (11000) on OSD window to save the adjustment result.
D. Adjust 9300 color-temperature
1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma-7120 Y>390 cd/m2
2. Switch the chroma-7120 to AV-mode (with press “MODE” button)
3. Switch the MEM.channel to Channel 04 ( with up or down arrow on chroma-7120 )
4. The LCD indicator on chroma-7120 will show x = 283 ± 20, y = 297 ± 20, Y = 460 ± 7 cd/m2
5. Adjust the Color (user) Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure (item 5, 6, 7) until chroma-7120 RGB value meet the tolerance =100 ± 2
9. Switch the chroma-7120 to xyY mode with press “MODE” button
10. Press Color (9300) on OSD window to save the adjustment result.
E. Adjust 7000 color-temperature
1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma-7120 Y>470 cd/m2
2. Switch the chroma-7120 to AV-mode (with press “MODE” button )
3. Switch the MEM.channel to Channel 05 ( with up or down arrow on chroma-7120 )
4. The LCD indicator on chroma-7120 will show x = 305 ± 20, y = 320 ± 20, Y = 460 ± 7 cd/m2
5. Adjust the Color (user) Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure (item 5, 6, 7) until chroma-7120 RGB value meet the tolerance =100 ± 2
9. Switch the chroma-7120 to xyY mode with press “MODE” button
10. Press Color (7000) on OSD window to save the adjustment result.
Turn the POWER-button off to on to quit from factory mode ( in USER-mode, the OSD window location was placed at middle of screen)
Posted By: FRANK at 04:04
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