Question about Proview PL913S 19" Flat Panel LCD Monitor

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No power when first plugged in the power light blinks

Proview model pa 19dk5 900t chassic it first started coming on then going to blank screen now wont turn on at all

thanks

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  • glenner1 Apr 23, 2008

    does not turn on

  • Anonymous Apr 29, 2008

    itz junk. buy a nue one.

  • psok Nov 21, 2008

    I have a proview 19" LCD TV PA-19DK5. In the last few days when I turn on the tv the picture appears and disappears after 1 sec. audio is fine, when I use my xbox 360 through the component video, the picture will last about 1 min with a buzzing/humming sound then disappear. 


    I read some of the posts and decided to take apart the TV and inspect the capacitors, I found NO bulging, leaking or damage on any of them.


    Here is a list of the capacitors on each board


    The power supply board (supplies power to the backlight and power to the "controller board")


    Qty./Cap./Voltage
    4 - 470 mfd 35V
    3 - 680 mfd 25V
    1 - 1000 mfd 25V
    3 - 470 mfd 25V
    1 - 22mfd 50V
    Big cap. (1.25"*0.5" dia.) folded down and glued could not read it. 9 blue flat style caps. and two beige (could not read them)


    On the "controller" board (the board gets power 12v&5v and other signals from the power supply and has 50+ socket connector leading to the I/O ports and a connection to the LCD grid)


    9 - 470 mfd 16V
    1 - 220 mfd 10V
    9 - 100 mfd 16V

    2 - 47 mfd 16V

    11 - 10 mfd 16V



    I am not sure what capacitors to re solder and Iam not sure where to start. The monitor does not appear to have a power supply issue, however I would think the cpas. going to the backlight would be a logical place to start. Can you please give me some guidance as to what caps. to solder and what to ignore, also could it be related to inverter failure.


    And suggestions would be greatly appreciated.

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  • Master
  • 558 Answers

Ok I have posted a fix for this but I will do it again it will require some soldering technique unplug the unit from the wall and the computer and set it down on its face(lcd side down) open the back of the unit and disconnect the lcd unit and the backlight power leads. remove the screws from the power unit cover. remove the screws from the vga board then gently pull up the board turn it over and you will see a grouping of 6 capacitors that are blown you may also see another single 120 mfd at 25 volts blown the capacitors are rated 470 mfd at 25 volts but look at the side of one when you have unsoldered it to make sure you get the proper capacitance . make sure you solder in the capacitor the correct way there is a neg and pos side to them and they switch sides halfway through the reworking. reassemble the unit and plug in the back light power leads and then plug in the lcd unit to the vga lead make sure its securely pushed onto the connector re screw the ten screws and then reattach to the computer and plug in the wall and the lcd should come back to life. be very careful doing this kid of work

Posted on May 01, 2008

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