Faulty tv
 

"Art" wrote in message
...
Actually time to turn this one over to the repair shops and stop the dribble!! IMHO

That would depend on the OP's desire and resources,
would it not? I doubt you know enough to gauge either
at this point.

Mr. Terrell's suggestion to take the issue to
news:sci.electronics.repair
is more appropriate under the circumstances,
IMHO. Followups set accordingly.

"Larry Brasfield" wrote in message ...
"Lessie" wrote in message
...
When the picture suddenly goes on a t.v., what is it usually
due to?

Operation of the power switch.

I don't think this could be it, as there is sound, hence the power switch
must be delivering current.

Hmmm. I almost wrote that more symptoms would
help narrow the cause a bit. g

Are you thinking of fixing a TV? If so, you will
be concerned with why yours is broken, not
common cases. That said, a common failure
is breakdown of the flyback HV winding, a
fairly expensive part to replace.

Are there cheap generic replacements? What is
expensive 10 Pounds or 100 Pounds ?

They may have become generic lately. When I was
last looking into it. the transformers tended to have
so many taps, different output voltages, and primary
inductance values, that they were all different.

If you really want to diagnose your TV's problem,
it would help to describe more of what you can see,
especially with different input stimulii if they vary the
result. For example, how long after turn-on before
the picture "goes". What does "goes" look like?
Does it ever come back? Is there a change in the
sound emitted? Any odd smells? What can you
see when you open the cover and shine a light on
the circuit board(s)? Do you have any instruments
to apply to the task? Are you willing to purchase
the schematic for the set?

--
--Larry Brasfield
email:
Above views may belong only to me.

Bloody shame that the original poster did not even take the time to post the
make, model and/or chassis so at least we have a flippin chance at
diagnosing, The original post indicated total lack of any intelligence
regarding actually servicing these devices. therefore the best option, IMHO,
is the fact that professional services would be mandated. Duh!
"Larry Brasfield" wrote in message
...
"Art" wrote in message
...
Actually time to turn this one over to the repair shops and stop the
dribble!! IMHO

That would depend on the OP's desire and resources,
would it not? I doubt you know enough to gauge either
at this point.

Mr. Terrell's suggestion to take the issue to
news:sci.electronics.repair
is more appropriate under the circumstances,
IMHO. Followups set accordingly.

"Larry Brasfield" wrote in
message ...
"Lessie" wrote in message
...
When the picture suddenly goes on a t.v., what is it usually
due to?

Operation of the power switch.

I don't think this could be it, as there is sound, hence the power
switch
must be delivering current.

Hmmm. I almost wrote that more symptoms would
help narrow the cause a bit. g

Are you thinking of fixing a TV? If so, you will
be concerned with why yours is broken, not
common cases. That said, a common failure
is breakdown of the flyback HV winding, a
fairly expensive part to replace.

Are there cheap generic replacements? What is
expensive 10 Pounds or 100 Pounds ?

They may have become generic lately. When I was
last looking into it. the transformers tended to have
so many taps, different output voltages, and primary
inductance values, that they were all different.

If you really want to diagnose your TV's problem,
it would help to describe more of what you can see,
especially with different input stimulii if they vary the
result. For example, how long after turn-on before
the picture "goes". What does "goes" look like?
Does it ever come back? Is there a change in the
sound emitted? Any odd smells? What can you
see when you open the cover and shine a light on
the circuit board(s)? Do you have any instruments
to apply to the task? Are you willing to purchase
the schematic for the set?

--
--Larry Brasfield
email:
Above views may belong only to me.

Art:
I agree with your accessment of the OP and his posting. Your reply posting
was correct IMHO.
It is time for a repair shop to look at it UNLESS the OP can provide more
information about his "desire and resources" so we can "guage" both and
respond accordingly.
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"Art" wrote in message
...
Bloody shame that the original poster did not even take the time to post
the
make, model and/or chassis so at least we have a flippin chance at
diagnosing, The original post indicated total lack of any intelligence
regarding actually servicing these devices. therefore the best option,
IMHO,
is the fact that professional services would be mandated. Duh!
"Larry Brasfield" wrote in message
...
"Art" wrote in message
...
Actually time to turn this one over to the repair shops and stop the
dribble!! IMHO

That would depend on the OP's desire and resources,
would it not? I doubt you know enough to gauge either
at this point.

Art wrote:

Again! It is blatantly apparent you do not have the technical quality to
attempt this type of repair, take the flippin thing to a professional
servicer. For YOUR PERSONAL SAFETY!!

First of all, I am not the one with the bad television. I simply
pointed out that news:sci.electronics.basics was not the place to ask
about TV repair and told the OP to ask his questions on
news:sci.electronics.repair, and to give the make, model and symptoms in
the request.

As far as TV repair I was working in a TV shop in the mid '60s at the
age of 13. I moved on to broadcast, Radar CATV and aerospace
electronics. I have done things the average tech will never do and I was
taught electrical safety when I was 13. I am now 100% disabled for a
number of reasons but I still know how to do the work.

Your silly little rant makes you look bad and doesn't reflect well on
TV techs in general.


--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

Sorry for omitting all the info, but the reason is that the tv has been
chucked away, still I wanted to know what it could have been.
The engineer had one look at it and said it was not worth fixing,
he didn't even open it, seems he new what it was straight away.

It was a 25" Panasonic, but I don't know what model it was. One
day we switched it on with the remote and only the sound started,
i.e. no picture. That's it, no picture was ever visible from then on,
the screen was exactly as if the unit was off, no partial brightness
or near the corners, just absolutly dead, as if no power was on.

But this is all academic :-) , so feel free not to waste your time too
much...

tnx.