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 !

Saturday, 9 February 2019

HP- LT3200_ HP-LT3700_HP-LT4200_HP-LT4700 _ HOW TO REMOVE CONTROL BOARD & {T' CON BOARD}

HP- LT3200_ HP-LT3700_HP-LT4200_HP-LT4700 _ HOW TO REMOVE CONTROL BOARD & {T' CON BOARD}





REMOVING THE CONTROL BOARD

  • LT3200 Control Board Removal: 
  1. Disconnect the front LVDS cable by pressing the spring-loaded latches on each side of the cable connector, and then pulling the cable from the connector.
  2. Remove the five screws that secure the control board cover to the unit.
  3. Lift the cover from the unit.

Note: You cannot remove the ZIF cables from the side of the unit on the 32-inch and 37-inch models.
  • Lift the board from the unit.
  • Note: When replacing the cover, insert the edge of the cover into the slots on the main bracket.

  • LT 3700 Control Board Removal:
  1. Disconnect the front LVDS cable by pulling the cable from the connector.
  2. Note: The latches are not spring-loaded on the 37-inch model.
  3. Pull the small white ribbon cable straight out to remove it from the connector.
  4. Remove the three screws that secure the control board cover to the unit.
  • Lift the cover from the unit.
  • Disconnect the two flat ribbon cables from the ZIF connectors at the top of the control board by flipping up the dark part of the connector and sliding the cable out of the socket.
Note: You cannot remove the ZIF cables from the side of the unit on the 32-inch and 37-inch models.


  • Lift the board from the unit.
Note: When replacing the cover, place the lip on the back of the cover into the slot on the main bracket, and then rotate the cover down into place.

Note: On the 37-inch model, when replacing the cover, put the cover over the board before reconnecting the screws.
  • LT4200 Control Board Removal:
  1. Disconnect the front LVDS cable by pressing in on the spring-loaded latches on each side of the cable connector, and then pulling the cable from the connector.
  2. Remove the four screws that secure the control board cover to the unit. Two of the screws are hidden under the pads.

  • Lift the cover from the unit.
  • Disconnect the four flat ribbon cables from the ZIF connectors at the top of the control board by flipping up the dark part of the connector and sliding the cable out of the socket.

  • Remove the flat ribbon cables from the connectors on the main TV chassis.
  • Lift the board from the unit.
  • Note: When replacing the control board cover, place the lip on the back of the cover into the slot on the main bracket, and then rotate the cover down into place.
  • LT4700 Control Board Removal:
  • Disconnect the front LVDS cable by pressing in on the spring-loaded latches on each side of the cable connector, and then pulling the cable from the connector.
  • Remove the six screws that secure the control board cover to the unit.

  • Lift the cover from the unit.
  • Disconnect the four flat ribbon cables from the ZIF connectors at the top of the control board by flipping up the dark part of the connector and sliding the cable out of the socket.
  • Remove the flat ribbon cables from the connectors on the main TV chassis.
  • Lift the board from the unit.
  • Note: When replacing the cover, place the lip on the back of the cover into the slot on the main bracket, and then rotate the cover down into place.
Note: To replace the board on the 47-inch model, replace one screw into the middle hole toward the top of the board, reconnect the flat ribbon cables, and then replace the remaining screws.
Posted By: FRANK at 02:14
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