Question about JVC AV-48WP30 48" Rear Projection Television

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JVC NV-50D500 Flickering

JVC NV-50D500

For the last 6 weeks Ihave to let the tv warm up It flickering or jumpy horizontal not it does not stop
can help me

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Convergence board problems u will nedd replacment soon

plz do rate this post

Posted on Nov 30, 2008

  • Sayed Feb 02, 2011

    I replaced the vertical IC and the convergence board is good.
    What is the problem then?

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My Samsung plasma tv is only around 4yrs old and suddenly started going from normal to dimmer projection, flickering between the two, is there a way to fix it or should I get a new tv


I have seen this in Samsung sets before, the flickering is likely a jumper in the power supply that needs to be removed, they had this issue on a number of sets---a jumper in the power supply (that board) likely is causing this, someone else here did post the location but search the model number with google for flickering and you may find it, it was widespread and as a last resort call Samsung or even a authorized service center.

I hope this helps and if you want (I spend a lot of time and effort answering questions here and if you get me the full model number I will research it when I get a chance, answer about 600 questions here a week.

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Happy holidays, Temp here is 11 degrees F right now but warm now inside the house.

Dec 19, 2012 | Televison & Video

1 Answer

After a period of time, vertical lines appear on the screen. Looks like jail bars. Sometimes turning the TV off, then back on will clear it. All channels. I replaced the projection bulb about 6 months...


no solution, same sounding problem though. last year we were getting lines through the screen and flickering and then the bulb burned out. had it replaced, 2 months later it did it again (they wouldn't stand behind the bulb so we had to buy a whole new one) this time had the bulb and ballast replaced because the repair guy said usually you have to replace both (why didn't they replace them both in the first place?) .. a year later and it's doing it again.. we get the flickering of the screen going on and off and horizontal lines that flicker across it. after turning the TV off and on a few times it seems to go away (or after it warms up)

i know know if i should order another bulb and ballast and spend the money for it to happen again or if it could be something else

let me know if you find a solution.. carolynspranger@gmail.com

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My screen looks like the tracking off. It wount stop flickering


Some electolytics on a small regulator IC are going bad. Take it to a shop.

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Tv picture is jumping


Unfortunately, JVC service manuals are not usually available outside of Authorized service centers. That being said,anyone that services TVs should have seen similar symptoms on other sets and should be able to "fix" this one even without a schematic. Call around. In the meantime, I'll look into this a bit more.

Dan

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Sounds like the 1000uf capacitors on the FMT board need replacing. This is a common symptom with that chassis. There are three 1000uf caps that fail on that PC Board

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Your tv has a video problem, leak capacitor in video section, near in flyback need to replace it.

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hi there, your set has a capacitor problem, most of it are on the horizontal section and video section., usually 100 microfarad electrolytic capacitor with a high voltage is damage. try to test some parts. ty

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Faint horizontal lines in picture


This is usually caused by a problem in the Horizontal Output section, around the Horizontal Output transformer usually a capacitor or diode going or gone faulty... the line you see are the Horizontal "Retrace" lines that are useually "Hidden" when the circuit is OK..

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