|
Home > Archive > Electrical Engineering > July 2005 > Strange sound from big screen TV
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
Strange sound from big screen TV
|
|
|
| My 5 year old 60" rear projection TV is going nuts. There is an intermittent
scratchy sound (like a loose wire connection from the input stage) coming
from the speakers - it does not matter if the TV is on or off. It happens
once every few days. The video section is clear when this sound comes on.
When the TV is switched off, we have the same strange sound, same volumn
level. This sound also comes out from my power sub that is connected to the
signal output of the TV. The sub is now disconnected. This does not happen
with my boom box located in the same room. I have Comcast able.
Couldn't figure if its the power company, my cable company or just an old TV
going bad. If it is from the power company then my boom box should have this
sound at the same time, but it does not. Any ideas?
| |
| TimPerry 2005-07-02, 6:25 pm |
|
"Fred" <Fred@Cross.Bal> wrote in message
news:L_mdnZ6ej5ikfFjfRVn-hg@comcast.com...
quote:
> My 5 year old 60" rear projection TV is going nuts. There is an
intermittent
quote:
> scratchy sound (like a loose wire connection from the input stage) coming
> from the speakers - it does not matter if the TV is on or off.
are you near an AM radio transmitter?
do you have a neighbor who might be operating high power RF equipment?
do you ever set a cell phone on the TV?
It happens
quote:
> once every few days. The video section is clear when this sound comes on.
> When the TV is switched off, we have the same strange sound, same volumn
> level.
does unplugging the set from the wall make the sound go away?
This sound also comes out from my power sub that is connected to the
quote:
> signal output of the TV. The sub is now disconnected. This does not happen
> with my boom box located in the same room. I have Comcast able.
>
> Couldn't figure if its the power company, my cable company or just an old
TV
quote:
> going bad. If it is from the power company then my boom box should have
this
quote:
> sound at the same time, but it does not. Any ideas?
>
| |
| Roy Q.T. 2005-07-02, 6:25 pm |
|
From: timperry@noaspamadelphia.net (TimPerry)
"Fred" <Fred@Cross.Bal> wrote in message
news:L_mdnZ6ej5ikfFjfRVn-hg@comcast.com...
My 5 year old 60" rear projection TV is going nuts. There is an
intermittent
scratchy sound (like a loose wire connection from the input stage)
coming from the speakers - it does not matter if the TV is on or off.
are you near an AM radio transmitter?
do you have a neighbor who might be operating high power RF equipment?
do you ever set a cell phone on the TV?
=A0=A0It happens
once every few days. The video section is clear when this sound comes
on. When the TV is switched off, we have the same strange sound, same
volume level.
does unplugging the set from the wall make the sound go away?
=A0=A0This sound also comes out from my power sub that is connected to
the
signal output of the TV. The sub is now disconnected. This does not
happen with my boom box located in the same room. I have Comcast able.
Couldn't figure if its the power company, my cable company or just an
old TV going bad. If it is from the power company then my boom box
should have this sound at the same time, but it does not. Any ideas?
----------------------------
Something like that is what i was thinking.
One of the neighbors has installed a High Powered Linear on a CB or Ham
Radio and is giving him TVI, these waves can flood your Television &
Stereo with unwanted cross talk, but some of the symptoms he mentioned
are inconsistent with this theory so I am not so sure.
Roy Q.T.
Urban Technician
[I don't make em, I just fix em]
| |
|
| On Fri, 1 Jul 2005 17:35:02 -0700, "Fred" <Fred@Cross.Bal> wrote:
quote:
>My 5 year old 60" rear projection TV is going nuts. There is an intermittent
>scratchy sound (like a loose wire connection from the input stage) coming
>from the speakers - it does not matter if the TV is on or off. It happens
>once every few days. The video section is clear when this sound comes on.
>When the TV is switched off, we have the same strange sound, same volumn
>level. This sound also comes out from my power sub that is connected to the
>signal output of the TV. The sub is now disconnected. This does not happen
>with my boom box located in the same room. I have Comcast able.
>
>Couldn't figure if its the power company, my cable company or just an old TV
>going bad. If it is from the power company then my boom box should have this
>sound at the same time, but it does not. Any ideas?
Is your cat missing?
Regards
quote:
>
>
>
Daveb
| |
| TokaMundo 2005-07-02, 6:25 pm |
| On Sat, 2 Jul 2005 11:13:11 -0400, "TimPerry"
<timperry@noaspamadelphia.net> Gave us:
quote:
>
>do you ever set a cell phone on the TV?
>
Don't forget "Having a "space phone" nearby..."
| |
| TokaMundo 2005-07-02, 6:25 pm |
| On Sat, 2 Jul 2005 14:56:34 -0400, ROYKEY@webtv.net (Roy Q.T.) Gave
us:
quote:
>
>Something like that is what i was thinking.
>One of the neighbors has installed a High Powered Linear on a CB or Ham
>Radio and is giving him TVI, these waves can flood your Television &
>Stereo with unwanted cross talk, but some of the symptoms he mentioned
>are inconsistent with this theory so I am not so sure.
If some XXXXXXX has a linear amp bleeding over into everything else
around, I would be placing a call to the FCC. His days of
non-conformance would be over in short order!
| |
| TokaMundo 2005-07-02, 6:25 pm |
| On Sat, 02 Jul 2005 20:07:36 GMT, DaveB Gave us:
quote:
>
>Is your cat missing?
Hahaha... funniest post I have seen in this group in a very long
time.
| |
| TimPerry 2005-07-02, 6:25 pm |
|
"TokaMundo" <TokaMundo@weedizgood.org> wrote in message
news:bbrdc1d09bap5c76fdkcf1qjrac952ufuj@4ax.com...
quote:
> On Sat, 02 Jul 2005 20:07:36 GMT, DaveB Gave us:
>
>
> Hahaha... funniest post I have seen in this group in a very long
> time.
that's cuz the guy downloading free power from the ionosphere went away
| |
| TokaMundo 2005-07-02, 11:25 pm |
| On Sat, 2 Jul 2005 16:23:51 -0400, "TimPerry"
<timperry@noaspamadelphia.net> Gave us:
quote:
>
>"TokaMundo" <TokaMundo@weedizgood.org> wrote in message
>news:bbrdc1d09bap5c76fdkcf1qjrac952ufuj@4ax.com...
>
>that's cuz the guy downloading free power from the ionosphere went away
>
That guy was a trip.
| |
| Rotes Sapiens 2005-07-12, 4:25 am |
| On Fri, 1 Jul 2005 17:35:02 -0700, "Fred" <Fred@Cross.Bal> wrote:
quote:
>My 5 year old 60" rear projection TV is going nuts. There is an intermittent
>scratchy sound (like a loose wire connection from the input stage) coming
>from the speakers - it does not matter if the TV is on or off. It happens
>once every few days. The video section is clear when this sound comes on.
>When the TV is switched off, we have the same strange sound, same volumn
>level. This sound also comes out from my power sub that is connected to the
>signal output of the TV. The sub is now disconnected. This does not happen
>with my boom box located in the same room. I have Comcast able.
Does the sound stop when the TV is disconnected from the power? It
could in theory be the sub. I would suspect bad connections in the
aerial cabling or a dry joint in the TV. Alternatively a globe could
be dying.
quote:
>Couldn't figure if its the power company, my cable company or just an old TV
>going bad. If it is from the power company then my boom box should have this
>sound at the same time, but it does not. Any ideas?
The boom box might filter out the scratchy sounds which are a
relatively high frequency.
Sig:
I do not fear computers. I fear the lack of them.
-- Isaac Asimov
|
|
|
|
|