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 !

Friday 8 March 2019

HITACHI 32LD9700C SERVICE MODE AND SELF DIAGNOSTIC

HITACHI 32LD9700C SERVICE MODE AND SELF DIAGNOSTIC

HITACHI 32LD9700C 

SERVICE MODE AND SELF DIAGNOSTIC 

Adjustment
How to get to Adjustment mode
Using the R-side control buttons with the set turned off (standby) can activate it.
Press the SUB-POWER button, INPUT SELECT button and DOWN button at the same time and hold for more than 5 seconds.
The set turns on in adjustment mode with OSD.
Changing data and Selecting Adjustment code
When the set is in adjustment mode, the cursor LEFT,RIGHT ,UP ,DOWN  and OK buttons of the remote control or R-side control buttons may be used as the adjustment keys.
UP,DOWN buttons are used for selecting adjustment code.
LEFT,RIGHT buttons are used for changing data values.
OK button is used for confirming the data.
After finishing the necessary adjustment press MENU button. Adjustment mode is released and the set returns to normal condition.
Memory Initialize operation
NOTE: The execution of this function returns the adjustment codes to the preset values, therefore, adjustment data will be lost.
Procedure
(1) Enter Adjustment Mode.
(2) Select MEMORY INIT adjustment code (No.898) and change the data value from 0 to 1.
(3) Activate MEMORY INIT by pressing OK button.
(4) Select No.712 and change data value from 1 to 0.
(5) Check that the receiving channel goes to P1. Unit is set to preset values.
How to check method of the use accumulation time for panel.
Select No. 894 of Service Adjustment Menu.
( *When No.894 is displayed as “65535” select No.893 and change data value from 0 to 1. Check No.894 is displayed as “0”.)
Factory Reset
After all of the adjustments of main chassis are finished, perform FACTORY RESET.
Press the RED button, GREEN button and P.MODE button at the same time and hold for more than 3 seconds. The unit is set to factory settings.
Procedure to re-install new software of Digital module software for 42PD9700
1. RS232C cable should be connected to RS232C terminal of TV set.
2. TV set turn ON.
3. Press hold [S.MODE], [YELLOW] and [Blue] button of remote controller until the service menu appears.
4. Set data of No 888 from [0] to [1] then press [OK] button.
5. RS232C cable should be connected between TV set and PC.
6. Program menu appears after double clicking Hyper
Terminal Icon.
Condition of Transfer
Bit rate:115200
Data bit:8
Parity: none
Stop bit:1
Flow: none
7. Click “Transfer” then select ”File send”.
8. Select required software file in the folder.
9. Turn Off the TV set.
10. Click “Send” in the “ File send” menu.
11. Turn On the TV set.
12. Screen will change and digit of Packet window will start from “0
13. Should wait until screen has “OK” information.
14. Disconnect RS232C cable.
15. Press hold [S.MODE], [YELLOW] and [Blue] button of remote controller until the service menu appears
16. data of no.888 should be changed back from [1] to [0] then press [OK] button.
17. Turn Off the TV set
Troubleshooting
How to get to Burn-in mode
This mode displays the test patterns of some single color raster in turn. These signals are from built-in generator of panel. So it can be presumed that maybe the panel has some trouble when the screen of Burn-in mode is abnormal.
Using the R-side control buttons with the set turned off (standby) can activate this mode.
Press the SUB-POWER button, INPUT SELECT button and VOLUME DOWN button at the same time and hold for more than 5 seconds.
The set turns on with single color raster and the OSD of [BURN IN: ON].
To escape from this mode, press the SUB-POWER button, INPUT SELECT button and UP button at the same time and hold for more than 5 seconds. Burn-in mode will be released.
How to recover the remote and R-side control key function
If remote and R-side control key cannot operate after miss set special function by front keys, these functions can recover by below method.
Press the SUB-POWER button, INPUT SELECT button and button at the same time and hold for more than 5 seconds.
The set turns on the service menu mode.
Select No.721 and No.722 then each data set from [0] to [1].
Or
Press the SUB-POWER  button and DOWN button at the same time and hold for more than 5 seconds.
How to check method of the use accumulation time for panel.
Select No.894 of Service Adjustment Menu.
How to reset the accumulation time after replacing LCD panel.
Select No.893 of Service Adjustment Menu change data from [0] to [1] press OK.
Self-Diagnosis Function
Signal circuit self-diagnosis function
This function is for the failure of the signal circuit, for example the phenomenon as below:
"Sometimes power turns off abnormally." "Sometimes picture disappears abnormally."
To enter to this Self-Diagnosis mode, follow the next steps:
Preparation:
1) The Power Cord should be connected to AC line and the Main Power switch should be turned on.
2) Turn the power off by the SUB-POWER( ) button of the monitor or the remote control.
Procedure:
1) Press the SUB-POWER  button and UP button on the bottom of the monitor at the same time and keep it pressed for more than 5 seconds after the power is turned on.
2) The monitor will be turned on and it will display On-Screen Display of the Self-check result and the failure history as below.
3) Any operation would cancel the Self -Diagnosis mode.
4) The following table shows the OSD symbols and contents of failure PWB in which failure most probably would be allocated according to the number of blinks.
If you clear history of failure, make FACTORY RESET: enter the factory setting mode, press the SUB-POWER button, INPUT SELECT  button and UP button on the bottom of the monitor at the same time and keep them pressed for more than 5 seconds after the power is turned on.
Posted By: FRANK at 03:08
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