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 February 2019

SYLVANIA - 6427FF _ EMERSON - EWF2705 _ SERVICE MODE

SYLVANIA - 6427FF _ EMERSON - EWF2705 _ SERVICE MODE




TO GET INTO SERVICE MODE, REMOTE CONTROL SHOULD BE PREPARED AS FOLLOWS

Prepare normal remote control unit. (Part No. NE116UD).

  1. Remove 3 Screws from the back lid. {One screw is in the battery compartment}
  2. Added J1 (Jumper Wire) to the remote control CBA.
  3. Close the remote control unit and put back screws as it were there.






TO ENTER SERVICE MODE

  • Use the service remote control unit just prepared as above.
  • Turn the power on. (Use main power on the TV unit.)
  • Press [SLEEP] button on the service remote control unit. Version of micro computer will display on the CRT. (Ex: 059-0.01).



6427FF:
  • Check the display on the lower left is “3652” and if it is not “3652” set it at “3652” according to "Initial Setting”

EWF2705:
  • Check the display on the lower left is “3641” and if it is not “3641” set it at “3641” according to "Initial Setting"


INITIAL SETTING
  1. Enter the Service mode.
  2. Press [VOL DN] button on the service remote control unit. Display changes “C/D,” “7F,” “LANGUAGE,” “ACCESS CODE,” “SOUND TYPE,” “VIDEO TONE,” “FM-MODE,” “V-OUT,” “VIDEO,” “AV MEMO,” “STABLE SOUND,” “FILTER,” “500,” “YUV MEMORY,” “NO SIG BRT,” “A-MUTE POL,” and “V-MENU” cyclically when [VOL DN] button is pressed.
  3. To set the following each data value, press [CH UP / DN] buttons on the service remote control unit.


7F --- Set to “FF.”
LANGUAGE --- Set to “SPA/FRA.”
ACCESS CODE --- Set to “ON.”
SOUND TYPE --- Set to “MTS.”
VIDEO TONE --- Set to “ON.”
FM-MODE --- Set to “OFF.”
V-OUT --- Set to “OFF.”

VIDEO
6427FF --- Set to “V1/V2/YUV.”
EWF2705 --- Set to “V1/V2.”
AV MEMO --- Set to “OFF.”
STABLE SOUND --- Set to “OFF.”

FILTER
6427FF --- Set to “ON.”
EWF2705 --- Set to “OFF.”
Adjusting the monitoring time --- Set to “500.”
YUV MEMORY --- Set to “OFF.”
NO SIG BRT --- Set to “0.”
A-MUTE POL --- Set to “H.”
V-MENU --- Set to “OFF.



SD CHECK MODE [FACTORY MODE]

  • Enter the Service mode.
  • Press [1] button on the remote control unit. The unit enter the SD-Check mode.
  • The unit starts selecting the added channel from first channel according to the memorized CH ADD/ DELL data and CATV/TV data in RAM
Posted By: FRANK at 06:35
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