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Flickering TV
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TheCase
Junior Member with 2 posts.
Join Date: Sep 2009
21-Sep-2009, 12:25 PM
#1
Flickering TV
Hi,
I was watching TV at my relative and I had to switch it off after just 1 minuite. It gave me a huge headache and when I looked on the wall next to the TV and saw the TV in the corner of my eye it was flickering, like dark to light really really fast.
The relative has been sufering from very bad headaches for the last few months from watching TV for hours, but no one else can see the flickering.
Any idea what the causes of fast flickering are
Thanks
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JohnWill
Moderator with 96,701 posts.
Join Date: Oct 2002
Location: South Eastern PA, USA
Experience: Advanced age & experience
21-Sep-2009, 03:50 PM
#2
What kind of TV, tube or flat panel? The flickering is normally a result of the lighting (florescent lights being the worst) beating with the vertical scan of a CRT tube. Flat panels normally don't have this issue.
TheCase
Junior Member with 2 posts.
Join Date: Sep 2009
21-Sep-2009, 04:58 PM
#3
The TV is a CRT. There are florescent lights near the TV but they are off, does this matter
Thanks
JohnWill
Moderator with 96,701 posts.
Join Date: Oct 2002
Location: South Eastern PA, USA
Experience: Advanced age & experience
22-Sep-2009, 10:50 AM
#4
If they're off, they don't affect it.
I'd make sure there is nothing like a speaker or other magnetic device close to the set. Of course, the TV may simply be failing, I would gather it's probably on the old side...
guy2
Senior Member with 344 posts.
Join Date: Apr 2009
Location: Chicago
Experience: always learning
25-Sep-2009, 09:54 AM
#5
I'm guessing it's old
One problem that CRT TVs have that is common is that somewhere in the horizontal chip set solder becoming damaged but still intact to work sometimes ,flicker or never.
I forgot the name of the thingy but the solder gets damaged more and more threw the years of shock ,moving the TV from one room to another or putting it down to fast one to many times will cause damage not to the chip it self but the solder holding it. The newer old CRTs were build to break ,take one apart and there's no chip support ,slots or anything as sturdy as the older one's.
If that's the case don't even bother getting it fixed it will cost you an arm and a leg because of all the contact points that need to be remover and re soldered manually by hand ,not like how it was manufactured.
Last edited by guy2 : 25-Sep-2009
10:01 AM
.
iamubiquitous
Junior Member with 20 posts.
Join Date: Jul 2008
Location: La-La Sangeles
Experience: Speed-read root drives
06-Oct-2009, 03:24 AM
#6
It's probably (As Guy2 stated.), a cold solder joint. These can only be repaired by visually examining the board(s) and manually re-soldering the suspect joints. 'Flickering' is also (Crts AND Lcds), caused by refresh rate being set improperly and in cases of (Television), crts, by an external source plugged into the same a.c. circuit and can be corrected with a simple filter inline on the power cord.
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