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Have an RCA 20F511T television that continuously loses power to the CRT. It is almost like a capacitor charges and discharges causing the screen to go from full picture to a single line, back to the picture and then to the single line again. It is cyclic and gets worse as the set warms up Thanks Tom

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  • tcpses1 Mar 28, 2008

    I tried your advice. With no input signal TV comes on and stays on (tried for 5 minutes). However when ever I change channels, the tv actually goes off and then comes back on. I remember now that is how the problem started. Thanks

  • tcpses1 Mar 29, 2008

    When I change the channels, sometimes it takes a short time for the channel to change, but most of the time, I can hear the crt discharging, the screen projects a series of snow, vertical and horizontal lines, then the channel comes in.


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It seems that the refresh rate of the tv is causing an issue try doin a hard reset
switch off ur tv
remove power cable from mains.
keep power button pressed for 15 seconds
then turn on the tv

Posted on Mar 28, 2008

  • 1 more comment 
  • Maanita Chadha
    Maanita Chadha Mar 28, 2008

    try the step and let me know...i will provide u with further steps

  • Maanita Chadha
    Maanita Chadha Mar 29, 2008

    is it that the tv would go off and come on or is it that the tv is taking too long to show the picture after changing a channel

  • Maanita Chadha
    Maanita Chadha Mar 30, 2008

    well that means its an issue with the refresh rate of ur tv...plz contact the vendor of ur tv so that they can reset it to factory defaults


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Click HERE for a detailed explanation of how to discharge a capacitor.
Also, the convergence modules will be located on the heat sinks on the main board. Here is a pic of the modules on the heatsink:

But once again , be VERY careful there is enough charge in a tv capacitor to kill you and will probably kill the capacitor (if it has a high enough capacity) due to the extremely high current flowing through it if you do that. The normal procedure is to connect both lead with an appropriate resistance. And not only once, because large capacitors can spontaneously rebuild some residual charge after being discharged (still enough to give you a serious shock). Normally both leads are connected through a fixed capacitor discharge bridge, which stays on the leads while working on the system. Once ready for testing, the bridges are removed.

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