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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday 13 February 2019

APEX - GB65HD 09W SERVICE MODE SELF CHECK - ADJUSTMENTS

APEX - GB65HD 09W SERVICE MODE SELF CHECK - ADJUSTMENTS

TO ENTER SERVICE MODE
  • Decrease the Volume to (0), by pressing Vol ( - ) on the remote control.
  • Press "Menu" on the front panel of the TV, and while holding  it, press "Mute" button on the Remote Control.
  • The letter "S" will appear at the upper left corner of the screen indicating that the set is in Service Mode.
Function of Service Mode:
In service mode:  Press "PIP CH +" repeatedly to scan through the following menus.  
                              Press Ch Up | Ch Dn, to select an item, and press Volume Up | Volume Dn to        adjust the data value to selected item.
There is no need adjust this menu since it has been adjusted in its optimum state at the factory.  Any adjustment to this menu may cause the projection TV to work improperly.
Menu-1
Menu -2 & Menu-3
Menu-4
Menu - 5
  • The values in Menu-2 to Menu-5 are averages or definite values at the factory.  Only adjust the values that are allowed to adjust.  Do not change those are not allowed to change.  
SELF CHECK
  • Self check is used to check ICs and function modules of the projection TV.
  • Press "PIP CH+" to display the following Menu when in Service Mode.
If 'Error' instead of "OK" displayed when something is wrong with ICs.

Displays
Position No.
IC functions
Circuit Boards
TDA9332
N005
RGB PROCESSING, H/V ACTIVATIING
MAIN CHASSIS
TEA6425
NV04
VIDEO SWITCHING
AV BAORD
TEA6420
NV02
AUDIO SWITCHING
AV BOARD
TUNERM
N002
MAIN TUNER
MAIN CHASSIS
MSP3440
NV01
BTSC SOUND PROCESSING
AV BOARD
TUNERP
N001
SUB-TUNER
MAIN CHASSIS
VPX3226
U14
PIP DECODING
FB BOARD
EEPROM
U3
MAIN MEMORY
MCU BOARD
EXTRAM
U7
EXTERNAL RAM FOR MCU
MCU BOARD
SPI
---------
CONVERGENCE MODULE
CONVERGENCE BOARD
Posted By: FRANK at 02:14
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