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 !

Monday 11 March 2019

PANASONIC TH-42PZ70B SERVICE MODE AND LED BLINKING CODE

PANASONIC TH-42PZ70B SERVICE MODE AND LED BLINKING CODE


PANASONIC TH-42PZ70B 

SERVICE MODE AND LED BLINKING CODE 


Self-check Function
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
Check of the IIC bus lines 
How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
BLINKING CHART 
CLICK ON THE IMAGE TO ZOOM IN

How to enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [0] button of the remote control three times within 2 seconds.
Key command
“1” button...Main items Selection in forward direction
“2” button...Main items Selection in reverse direction
“3” button...Sub items Selection in forward direction
“4” button...Sub items Selection in reverse direction
“RED” button...All Sub items Selection in reverse direction
“GREEN” button...All Sub items Selection in forward direction
“VOL” button...Value of sub items change in forward direction ( + ), in reverse direction ( - )
Service tool mode
How to access
1. Select “SRV-TOOL” in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by “Self-check indication and forced to factory shipment setting”.
POWER ON TIME/COUNT
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not cleared by self-check or any command.
Exit
1. Disconnect the AC code from wall outlet.
Adjustment Procedure
Driver Set-up
Item / Preparation
1. Input a white signal to plasma video input.
2. Set the picture controls as follows.
Picture menu: Dynamic
PNR: OFF
Aspect: 16:9
Caution
1. First perform Vsus adjustment.
2. Confirmation of Vscn voltage should be performed after confirmation of Vad adjustment. When Vad=-140V, Voltage of Vscn is 8V ±1V.
Adjustments
Adjust driver section voltages referring the panel data on the panel data label.
Check or adjust the following voltages with the multimeter.
Name
Test Point
Voltage
Volume
Vsus
TPVSUS (SS)
Vsus ± 2V
VR251 (P)
Ve
TPVE (SS)
Ve ± 1V
VR6000 (SS)
Vset
TPVSET (SC)
365V ± 7V
Fixed
Vad
TPVAD (SC)
-140V ± 1V
VR6600 (SC)
Vscn
TPVSCN (SC)
Vad+148V ± 1V
VR6841 (SC)
Vda
TPVDA (SS)
75V + 1V, -2V
Fixed

PAL panel white balance adjustment
Asing time is longer than 15min.
Make sure the front panel to be used on the final set is fitted.
Make sure a color signal is not being shown before adjustment.
Put the color analyzer where there is little colour variation.
Complete the adjustment within 10 minutes after the turn on electricity.
Turn on the power supply again when it is not possible to complete it by aging etc.
1. Display the white balance pattern.
2. Enter the Service mode.
3. A number key “1” and “2” are operated and “WB-ADJ” is displayed. Check that the color balance is “HIGH”.
4. Select “G-CUTOFF” item, using the number-key “3” or “4”, and set to “80”, using the volumekey “+” or “-”. Also, “B-CUTOFF” and “R-CUTOFF” set to “80”.
5. Set “G-DRIVE” at “E0”.
6. Touch the signal receiver of color analyzer to the highlight window’s center, and adjust B drive and R drive so x, y become the “COLOR TEMP HIGH” in the below table.
7. All RGB drive increase so that the maximum drive value of RGB may become “FC”. (“ALL-DRIVE” set to “FC”.)
8. Set color balance to NORMAL using “7” key.
9. Fix G cutoff , B cutoff and R cutoff at “80”.
10. Fix G drive at “E0”.
11. Adjust B drive and R drive so the highlight window’s x, y become the “COLOR TEMP NORMAL” in the below table.
12. All RGB drive increase so that the maximum drive value of RGB may become “FC”. (“ALL-DRIVE” set to “FC”.)
13. Set color balance to “LOW” using “7” key.
14. Fix G cutoff, B cutoff and R cutoff to “80”.
15. Fix G drive to “E0”.
16. Adjust B drive and R drive so the highlight window’s x, y become the “COLOR TEMP LOW”
17. All RGB drive increase so that the maximum drive value of RGB may become “FC”. (“ALL-DRIVE” set to “FC”.)
HD white balance adjustment
Asing time is longer than 15min.
Make sure the front panel to be used on the final set is fitted.
Make sure a color signal is not being shown before adjustment.
Put the color analyzer where there is little colour variation.
Complete the adjustment within 10 minutes after the turn on electricity.
Turn on the power supply again when it is not possible to complete it by aging etc.
1. Display the white balance pattern.
2. Enter the service mode.
3. A number key “1” and “2” are operated and “WB-ADJ” is displayed.
Check that the color balance is “HIGH”.
4. Select “G-CUTOFF” item, using the number-key “3” or “4”, and set to “80”, using the volumekey “+” or “-”. Also, “B-CUTOFF” and “R-CUTOFF” set to “80”.
5. Set “G-DRIVE” at “E0”.
6. Touch the signal receiver of color analyzer to the highlight window’s center, and adjust B drive and R drive so x, y become the “Color balance Cool” in the below table.
7. All RGB drive increase so that the maximum drive value of RGB may become “FC”. (“ALL-DRIVE” set to “FC”.)
8. Set color balance to NORMAL using “7” key.
9. Fix G cutoff , B cutoff and R cutoff at “80”.
10. Fix G drive at “E0”.
11. Adjust B drive and R drive so the highlight window’s x, y become the “Color balance “Normal” in the below table.
12. All RGB drive increase so that the maximum drive value of RGB may become “FC”. (“ALL-DRIVE” set to “FC”.)
13. Set color balance to “LOW”.
14. Fix G cutoff, B cutoff and R cutoff to “80”.
15. Fix G drive to “E0”.
16. Adjust B drive and R drive so the highlight window’s x, y become the “Color balance Warm”
17. All RGB drive increase so that the maximum drive value of RGB may become “FC”. (“ALL-DRIVE” set to “FC”.)
Posted By: FRANK at 01:46
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