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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Saturday, 30 March 2019

HITACHI 37HLX99/DW2-H - HOW TO ENTER SERVICE MODE - FACTORY INITIALIZE

HITACHI 37HLX99/DW2-H - HOW TO ENTER SERVICE MODE - FACTORY INITIALIZE

Service Mode_Factory Initialize_ Factory Reset Data - HITACHI 37HLX99 (NTSC - ATSC)
ADJUSTMENT MODE
Chassis adjustment mode can be access by pressing the R/C keys MENU + MENU + 8 + SELECT to enter adjustment mode. 
For some parameters the only way to see them is by selecting the parameter number than pressed SELECT in order to see it; then DATA can be change if other parameter needs to change then press ▼ key then repeat the same procedure.
Other way to access this mode is by use JIG R/C code: (9C Hex).  
To escape from Adjustment Mode press “INPUT” key on Side panel or EXIT key of R/C to exit service adjustment mode.
CHANGING THE DATA VALUES
When the TV set is in adjustment mode, the cursor ◄/►  ▲/▼  and MENU keys of the remote control or front panel may be used as the adjustment keys.
Use any Hitachi remote control when making an adjustment. 
▲▼   Keys are used for selecting adjustment item.
◄► keys are used for changing data values. MENU key is used to advance through the adjustment mode menus and pages.
To make a selection, use the NUMBER pad on the R/C.
example : select DEVICE press 69 then SELECT the DATA shown is "EB" ; if this DATA needs to be change press the ◄►  keys to modify, when finish press SELECT key to store the new DATA value.
After finishing the necessary adjustment press the R/C EXIT key or EXIT key on the side panel.  Adjustment mode is released and TV set returns to normal condition.
REMOTE CONTROL & BUTTON FUNCTIONS
INITIALIZE THE MEMORY
NOTE: The execution of this function returns the adjustment codes to the preset values, therefore, adjustment data will be lost.
Procedure
* Enter Adjustment mode by the method described in sub-items 1.1 and 1.2 from item 1 (“Adjustment procedure start up”).
* Get to the second page of Adjust Mode by pressing remote control “Menu” key once, or with either the R/C or front panel
▲▼  cursor keys several times.
* Select MEMORY INIT adjust code.
* Activate MEMORY INIT by pressing
cursor key for more than 3 seconds.
* Check the
following process for initialization operation.
> A screen is be colored cyan when MEMORY INIT start.
> A screen is be colored green when MEMORY INIT finish normally.
> A screen is be colored red when MEMORY INIT finish abnormally.
Do not unplug from AC outlet until this operation is complete and do not perform any key operation either, after this operation each factory setting and all adjust mode data should reset to delivery settings automatically.
After Memory Initialize, it should be unplug AC cord. Unplug and plug AC cord and then all settings and data are updated.
When TV turns ON , it will tune CH03 this is the complete operation of Memory Initialize process.
FACTORY RESET
After all of the adjustments of main chassis are finished, perform FACTORY RESET.
1 Enter Adjustment Mode by the method described in
sub-item 1-1 from page 39. (“Adjustment Procedure Start-up”).
2. From the first menu in Adjustment Mode, select FACT RESET adjustment code.
3. Activate FACT RESET by pressing “Right” cursor key once.
4. Other procedure to acces the FACTORY RESET is by sending the 92 hex code with a programmable R/C.
5. The procedure of the FACTORY RESET process is the following and the DATA table is shown next.
> A screen is colored magenta when FACTORY RESET starts.
> A screen is colored green when FACTORY RESET finishes normally.
> A screen is colored RED when FACTORY RESET finish abnormally.
> After FACTORY RESET, it should be unplug AC cord. Unplug and plug AC cord and then all settings and data are updated.
> When PDP turns ON , it will tune CH03 this is the complete operation of FACTORY RESET process.
FACTORY RESET (Default) DATA VALUES
CLICK ON THE TABLE TO ZOOM IN