How can you fix the extreme high pitch sound of my tv?

[Skiguy411]

I have an old 1988 Sony 27inch Trinitron TV. The picture is great and everything, but it has started making this extremely loud, extremely high pitched sound that is starting to drive me crazy. Is there anything I can do to fix it?

 

[Eli]

AFAIK, it's normal.

It does seem strange that it would appear, though. Are you sure you just never noticed it before?

 

[Skiguy411]

Originally posted by: Eli
AFAIK, it's normal.

It does seem strange that it would appear, though. Are you sure you just never noticed it before?

This noise is alot louder than any other tv. Its like the normal high pitched sound you hear except magnified 5x's.

 

[RaynorWolfcastle]

I think I'd heard about this before, it was something about a resonant frequency caused by cheap step-up transformers or something as I recall; then again I could be completely wrong.

 

[Anubis]

it happenes on every TV i have ever had old and new

 

[DrumminBoy]

my tv does it too...a few brisk hits to the back usually quiets her down for awhile

 

[spidey07]

isn't this a sign of an unstable power supply?

yeah - a few good whacks should help. I'm not kidding.

 

[Amused]

Originally posted by: spidey07
isn't this a sign of an unstable power supply?

yeah - a few good whacks should help. I'm not kidding.

What he said.

 

[OffTopic1]

Originally posted by: Amused

Originally posted by: spidey07
isn't this a sign of an unstable power supply?

yeah - a few good whacks should help. I'm not kidding.

What he said.

Check the fuse or power supply resistor.

 

[jagec]

TVs do that. Older ones are louder than newer. Another reason just to get a big projector and TV tuner for your computer

 

[jst0ney]

Its the flywheel converter. Very hard and expensive to fix. If you open your tv you will prpbably die even if you have the power unpluged. Capacitors in there will hold a lethal charge for a very long time. You are better off getting a new tv. I speak form experience, my tv did the same thing.

 

[Eli]

Originally posted by: jst0ney
Its the flywheel converter. Very hard and expensive to fix. If you open your tv you will prpbably die even if you have the power unpluged. Capacitors in there will hold a lethal charge for a very long time. You are better off getting a new tv. I speak form experience, my tv did the same thing.

OMG.. BAHAHAHA

LMFAO @ flywheel converter

Perhaps you mean.. flyback transformer?

LOL

 

[morkinva]

If it is the flyback transformer, it will eventually get louder, start crackling and fail. I fixed mine by using some of that gasket maker stuff for cars. You have to put it on where you see it arcing with a thick layer of gasket maker. Then let it dry completely for 24 hrs before using it.

Warning, if you touch one of those capacitors which are right next to the transformer, then your toast, unless you properly discharge them.

 

[jagec]

Originally posted by: morkinva
Warning, if you touch one of those capacitors which are right next to the transformer, then your toast, unless you properly discharge them.

"Properly discharge" = go up to your friends and say "Hey, want to feel something cool? Touch that!"

 

[spidey07]

Originally posted by: jagec

Originally posted by: morkinva
Warning, if you touch one of those capacitors which are right next to the transformer, then your toast, unless you properly discharge them.

"Properly discharge" = go up to your friends and say "Hey, want to feel something cool? Touch that!"

Damn you!!!

Now I have to clean coke off my monitor.

:beer:

 

[thawolfman]

Originally posted by: DrumminBoy
my tv does it too...a few brisk hits to the back usually quiets her down for awhile

:thumbsup:

 

[Lvis]

mine stops doing it when I wiggle the cable tv coax. dunno why.

 

[Skiguy411]

Originally posted by: morkinva
If it is the flyback transformer, it will eventually get louder, start crackling and fail. I fixed mine by using some of that gasket maker stuff for cars. You have to put it on where you see it arcing with a thick layer of gasket maker. Then let it dry completely for 24 hrs before using it.

Warning, if you touch one of those capacitors which are right next to the transformer, then your toast, unless you properly discharge them.

Hm....this sounds like something I could do. To properly discharge the capacitors, couldnt you just unplug the tv while it is on?

 

[Eli]

Originally posted by: Skiguy411

Originally posted by: morkinva
If it is the flyback transformer, it will eventually get louder, start crackling and fail. I fixed mine by using some of that gasket maker stuff for cars. You have to put it on where you see it arcing with a thick layer of gasket maker. Then let it dry completely for 24 hrs before using it.

Warning, if you touch one of those capacitors which are right next to the transformer, then your toast, unless you properly discharge them.

Hm....this sounds like something I could do. To properly discharge the capacitors, couldnt you just unplug the tv while it is on?

NO.

They're capacitors.

If you don't know that capacitors store energy, you have no business opening your TV.

 

[Skiguy411]

Then how would you recommend discharging them other than just letting the tv sit there without it plugged in for weeks?

 

[pray4mojo]

How do you properly discharge it? Unplug it and repeatedly press the power button?

 

[OffTopic1]

Originally posted by: Skiguy411
Then how would you recommend discharging them other than just letting the tv sit there without it plugged in for weeks?

The capacitor might hold the 40000-50000v charge more than a couple of weeks.

Connect a wire to ground and the other to a metal screw driver with wood/plastic handle. Wear rubber gloves & wrap a dry rag around the flyback cable. Then lift the cup on top of the monitor that the cable attaches to and jam the grounded screw driver underneath the cup to discharge.

 

[dmurray14]

Originally posted by: OffTopic

Originally posted by: Skiguy411
Then how would you recommend discharging them other than just letting the tv sit there without it plugged in for weeks?

The capacitor might hold the 40000-50000v charge more than a couple of weeks.

Connect a wire to ground and the other to a metal screw driver with wood/plastic handle. Wear rubber gloves & wrap a dry rag around the flyback cable. Then lift the cup on top of the monitor that the cable attaches to and jam the grounded screw driver underneath the cup to discharge.

:Q

Skiguy, just go buy a new tv. It's not really worth getting fvcked up to save a few bucks!

 

[spidey07]

Originally posted by: dmurray14

Originally posted by: OffTopic

Originally posted by: Skiguy411
Then how would you recommend discharging them other than just letting the tv sit there without it plugged in for weeks?

The capacitor might hold the 40000-50000v charge more than a couple of weeks.

Connect a wire to ground and the other to a metal screw driver with wood/plastic handle. Wear rubber gloves & wrap a dry rag around the flyback cable. Then lift the cup on top of the monitor that the cable attaches to and jam the grounded screw driver underneath the cup to discharge.

:Q

Skiguy, just go buy a new tv. It's not really worth getting fvcked up to save a few bucks!

heh, yeah. just keep one arm behind your back so the charge doesn't cross your heart and make it stop beating.

seriosly - don't be messin in there.

 

[Skiguy411]

Sigh, I guess I'll just have to tuff it out because I cant really afford a new tv right now. How long do you think this TV has left?