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, 27 March 2019

VIEWSONIC - VA 2012W _ VA2012WB _ BIOS SOFTWARE UPGRADE PROCEDURE _ FACTORY MODE_ BURN MODE_LCD MONITOR

VIEWSONIC - VA 2012W _ VA2012WB _ BIOS SOFTWARE UPGRADE PROCEDURE _ FACTORY MODE_ BURN MODE_LCD MONITOR




SOFTWARE UPGRADE [BIOS]
Main software upgrade process is there in the previous post.

  • After installation, we could find the shortcut in the setting path or the program bar.
  • Security file is a key to use ISP function , press “ OK “ button.
  • The warning is used to remind user of that different CPU rate may cause ISP function fail. (it’s limited by IIC protocol ) , press “ OK “ button.




  • Press “ Create Security File “ button to key in Security code . Adjusting bar to decrease speed of IIC bus.

  • The setting for security code of software ISP . it needs 2 command No. and key in command sequentially for 7C , 4C , 77. The command No. and command must be set by user while coding. About the detailed of setting.
  • Select MTV type first , load the binary or intel hex file that you want to program into the MCU , and select “ AUTO” item , then press “ RUN “ button.
  • If user change the MTV type , it must load file again , or the buffer of load file will be cleared .
  • CRC ( cyclic redundancy check ) : the host can check CRC register’s result instead of reading every byte in flash . The message of Check MCU CRC OK means that the host verify OK for the progress of program.
  • OTHER DETAILS
When 'No signal' or 'Out of range' messages appear
  • If no input signal is detected, the “No Signal” message will appear in the center of the screen.  If the V-Sync signal rate is greater than than 85Hz or its resolution is greater than SXGA, the “Out of Range” message will appear in the center of the screen.
ACTIVATING FACTORY MODE AND BURN MODE
  • While the device is in standby, press the [2] button, then press the power button to enter Factory Mode. 
  • While Factory Mode is active, an additional menu page titled “Factory Menu” will be accessible.
  • Press the [2] button to enter the Factory Menu page, then press the [2] button to enter Burn Mode.
WHEN INSTALLING A NEW MAIN BOARD
  • Enter Factory Mode.
  • Use a PC or chrom to send a 32-tone gray scale signal to the monitor.
  • Select “Auto Color”
Posted By: FRANK at 03:34
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