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 20 February 2019

SHARP 21F19 - PAL/SECAM VERSION - SERVICE MODE AK-44 CHASSIS

SHARP 21F19 - PAL/SECAM VERSION - SERVICE MODE AK-44 CHASSIS



TO ENTER SERVICE MODE
  • Press "Menu" button on the remote control.
  • Press [4 => 7 => 2 => 5] buttons in sequence by remote control.
  • Use {Cursor Up / Cursor Dn} button to select an item to adjust.
  • Use {Cursor Left / Cursor Right} buttons to adjust the data value to selected item.
  • Switch OFF the TV set by its panel Power Switch, to 'Exit' service mode.
COLOR BUTTONS
  1. Press [Red] button to activate or deactivate Automatic Volume level [AVL] between  different broadcast channels.
  2. Press [Green] button in order to change the Main Service Menu to the Geometry Menu.  To return to the Main Service Menu it should be pressed the 'Menu' button.  In the bottom area of this menu, it can be seen "AUTO".  By pressing 'Wide Mode" button, it changes to 4:3 or 16:9 formats.  To perform Geometry adjustments select the most suitable option.  
  3. [Auto] - #  entering 4:3 of 16:9 signal and proceeding  adjustments. #  16:9, entering 16:9 signal and proceeding adjustments.
SCREEN ADJUSTMENT
  • Press 'Yellow" button in order to prepare the system for screen adjustment.  (Vertical scan disabled).  Adjust Horizontal line, via screen pot meter, as thin as possible.  To return to main Service Menu, it should be pressed 'Menu' button.
AUTO PROGRAMMING SYSTEM SETUP
 In case the TV should be serviced, there is a possibility of returning the set with [APS] Auto Programming System activated in order to make easy the first start up to the customer.  If this feature is activated, the picture and sound menus will be automatically memorized to the default values.
Before Start:  It is necessary let the TV set in program number that will appear for the first time , because the A.P.S does not preset this selection.
  • Enter the Service Mode.
  • Access TXT1 Register by Cursor Up / Dn.
  • Press '7' button on the remote control in order to activate the Auto Programming System.
  • Exit service mode by "Menu" button.
  • Switch the TV Off, using the main switch.
Posted By: FRANK at 04:33
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