Question about Dell E198FP 19" LCD Monitor

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Lcd circuit board - Dell E198FP 19" LCD Monitor

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  • Buddy Mcsparrin Feb 14, 2012

    What do you need to know about the circuit board?

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2 Answers

Tv is dim and can't brighten


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Apr 28, 2017 | Televison & Video

1 Answer

Cms927b1049


Strip the unit and remove the circuit board (just a few plastic clips, no screws). Remove the LCD assembly from the circuit board (more plastic clips and an eight pin push connection). Removed the LCD unit from the clear plastic housing (more plastic clips). Finally heat up the plastic ribbon where it is stuck to the circuit board (hair dryer will do trick) and then firmly press it onto the circuit board... probably worth doing this several times; in effect you are remating the ribbon to the circuit board by softening the adhesive. Put it all back together and it should be working again.

Jan 17, 2014 | Honeywell Electronic Programmable...

1 Answer

Iwant to know how to install lcd screen


  • Place your cell phone face-down, remove the back cover, remove the battery from its compartment and set it aside.

  • 2

    Remove the Phillips-head screws securing the back panel of the phone. This portion of disassembly varies from phone to phone. Some cell phones require that you pry off the back panel with a thin plastic object such as a guitar pick or credit card. Remove the back panel and set it aside.

  • 3

    Remove the circuit board. This part of the disassembly process varies from cell phone to cell phone. Most cell phones require that you remove the screws securing the circuit board in place. After the screws are removed, you may be able to completely remove the circuit board, but many phone require that you disconnect one or several ribbon cables connecting the circuit board to the keypad, LCD screen and camera. Lift the circuit board out of the phone and set it aside.

  • 4

    Remove the now-exposed LCD screen. You may need to remove a few small Phillips-head screws. Lift the LCD screen out of the cell phone casing and set it aside.

  • 5

    Follow this procedure in reverse to install the new LCD screen into your cell phone and re-assemble the cell phone casing.

  • Oct 09, 2010 | Cell Phones

    1 Answer

    Can i repair a broken screen on a lcd tv?


    LCD stands for Liquid Crystal Display. It is all one unit and when broken can not be repaired. The only way to fix it would be to purchase a replacement screen but that would probably cost more than replacing the whole TV. You might look for a used TV of the same model with a good screen and a bad circuit board and exchange parts but it is far easier to replace circuit boards than LCD screens so if you find a similiar model with a bad circuit board take the good board from your set to make the one with the good screen work again.

    Sep 08, 2010 | Samsung LN-S4095D 40 in. LCD HDTV

    1 Answer

    I plugged in my sanyo 26" lcd tv and there's a thick white vertical line down the center of the tv. I don't know what to do about it.


    If the unit is under warranty, return it to the manufacturer for a replacement or a refund.
    What you need t check is that the voltages from the printed circuit boards to the LCD panel are giving the correct voltages, also check the logic printed circuit board for shorted components or incorrect voltage values, if after checking the voltages frim each printed circuit board, everything is testing ok, the problem may be that you need a replacement LCD panel. But make sure to throughly check the main printed circuit board for any faulty solder jouints , or dry joints, as well as any blown or shorted components. I hope this helps. Good luck.

    Jun 20, 2010 | Sanyo DP26648-R 26 in. LCD TV

    1 Answer

    Replace lcd screen


    How to replace LCD Screen on a Zinc II

    1. Take out the battery
    .
    2. unscrew the four torx4/torx5 screws including the one under warning label but no need to touch the phone idenity label ;)
    .
    3. unscrew the two side screws located near top
    .
    4. take out pen and any card in device
    .
    5. carefully remove back (now you will be able to see the circuit board)
    .
    6. looking at the phone LCD down so you see the circuit board remove screws (small Phillips/ cross-heads silver in color).
    1.top left.
    2. top right.
    3. middle right near small cable.
    .
    Now you should be able to move the circuit board (do not force apart).
    .
    The LCD cable and keyboard cable are attached to the underside of the board.
    .
    1. Slide the phone 50% open (but keep phone LCD face down so you are look at the board phone the (keyboard being closest to you than main speaker).
    .
    2. Carefully lift left side of board (you should see the cables) using a small screwdriver Very Carefully pry them off the board (the should pop off with no force needed).
    .
    3. Slide phone fully open and now you are able to see all 4 torx screws that hold the front part of the phone on just under the circuit board.
    .
    * Bottom 2 are in small cut out boxes just under to circuit board you may need to slide the front up or down to align with the screws.
    .
    *The top 2 you should have notice when you fully opened the phone in normal use and looked at the back of the LCD at top behind speaker.
    .
    4. The front surround and LCD and buttons will come off. Carefully remove from bottom near the navigation buttons.
    .
    5. The phone should now be able to divide into the two sections with cables.
    .
    6. Unscrew the the LCD and the cable 2 top 2 bottom for LCD - but you have to also remove the button ribbon cable.
    .
    replace LCD and reverse process

    *the LCD cable needs to be pushed into the socket on the underside of the circuit board (this can be tricky so take your time).
    .
    *Note: the keyboard cable is similar to the LCD cable but it has a smaller socket.

    Feb 02, 2010 | O2 Xda Zinc Cellular Phone

    1 Answer

    Screen went black/blank can hear sound no picture, cannot change source or access menu LN-S4692D


    Your inverter circuits and/or power board need servicing.....

    Either three fault scenarios are happening:

    1. the inverter circuits are not producing AC ripple too the CCFL lamps that illuminate the LCD glass panel.

    2. the power supply board is not feeding 24vdc - 12vdc sustain voltage too the inverter circuits. Meaning, no dc high voltage output from the power board.

    3. The timing control circuit (LCD Board) has shorted switching devices or on-board memory has failed....which causes data/dc loss at the input which results in the inverters canceling load power (lamps). The sync data between inverter and LCD Board are absent. This will result in a 'NO LIGHT' condition on the LCD display.

    Number 3 is a rare case, its usually #1 the inverters need servicing.....

    Nov 10, 2009 | Samsung LN-S4692D 46 in. LCD HDTV

    3 Answers

    Complicated Question about repairing circuit board


    Broken LCD panel does not affect circuit board behind that panel.
    Make sure that other TV should be same model (KDL-40W4100) to swap boards / LCD panel because each model has its special designed boards and cannot be used in different model (if chassis is same, few boards can be used)

    Apr 29, 2009 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

    1 Answer

    Benq lcd


    WHich model is this?
    Samir

    Dec 24, 2007 | BenQ FP737S-D 17" LCD Monitor

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