tv failure

[[email protected]]

I've been trying to rectify a fault on ferguson tv(25inc), model
no;d59f. the nature of the fault is; the tv always switches itself off
an on ,after sometime( with shrill noise from the line transformer ),
especially when connected to the aerial and tv station very bright. i
have removed the boost capacitor in the power supply with known good
one,but the problem still continue.i observed that when the tv is not
receiving broadcast signal,it will not switch off. i've injected a
video signal throughthe av input(bypassing the tuner), the result is
still the same.Arching is observed in the line transformer ,with
vertical dark line streaks when the tv is about to swich off.What
could be the cause of this?

 

[D from BC]

I've been trying to rectify a fault on ferguson tv(25inc), model
no;d59f. the nature of the fault is; the tv always switches itself off
an on ,after sometime( with shrill noise from the line transformer ),
especially when connected to the aerial and tv station very bright. i
have removed the boost capacitor in the power supply with known good
one,but the problem still continue.i observed that when the tv is not
receiving broadcast signal,it will not switch off. i've injected a
video signal throughthe av input(bypassing the tuner), the result is
still the same.Arching is observed in the line transformer ,with
vertical dark line streaks when the tv is about to swich off.What
could be the cause of this?

I have no tolerance for CRT problems...
One little flicker and it's not fast enough to let gravity accelerate
it into the trash.


D from BC
British Columbia
Canada.

 

[JeffM]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in http://groups.google.com/group/sci.electronics.repair
http://groups.google.com/group/sci....s+sci.electronics.design-*-*-design+uu+repair

 

[J.A. Legris]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in news:sci.electronics.repair.http://groups.google.com/group/sci..../group/sci.electronics/msg/13651a897337a7a9?q...

Considering all the OT political nonsense found here, TV repair is at
least peripherally related to ED, and at one time was even a
respectable path to it. Just ask JT.

 

[Jim Thompson]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in news:sci.electronics.repair.http://groups.google.com/group/sci..../group/sci.electronics/msg/13651a897337a7a9?q...

Considering all the OT political nonsense found here, TV repair is at
least peripherally related to ED, and at one time was even a
respectable path to it. Just ask JT.

Yep. All the practical stuff I learned from puttering around in my
Dad's TV repair shop.

"ED"?? Isn't that Erectile Dysfunction ?

...Jim Thompson

 

[D from BC]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in http://groups.google.com/group/sci.electronics.repair
http://groups.google.com/group/sci....s+sci.electronics.design-*-*-design+uu+repair

Look at it this way.. It's historic!
We get to see one of the last CRT TV repair posts in the time of LCD
domination.
Kinda sad too.. Poor schmuck probably gets stuck fixn Betamax VCRs and
8 tracks..


D from BC
British Columbia
Canada.

 

[PeterD]

Arching is observed in the line transformer ,with
vertical dark line streaks when the tv is about to swich off.

And your question is what?

 

[Jamie]

I've been trying to rectify a fault on ferguson tv(25inc), model
no;d59f. the nature of the fault is; the tv always switches itself off
an on ,after sometime( with shrill noise from the line transformer ),
especially when connected to the aerial and tv station very bright. i
have removed the boost capacitor in the power supply with known good
one,but the problem still continue.i observed that when the tv is not
receiving broadcast signal,it will not switch off. i've injected a
video signal throughthe av input(bypassing the tuner), the result is
still the same.Arching is observed in the line transformer ,with
vertical dark line streaks when the tv is about to swich off.What
could be the cause of this?

You have excessive HV, and the question should asked in the repair channel.

 

[mpm]

Considering all the OT political nonsense found here, TV repair is at
least peripherally related to ED, and at one time was even a
respectable path to it. Just ask JT.

Now if you had one of those cheap Replica Ferguson TV's, or had the
Louis Vuitton remote to go with it.... you'd be in the right place!!

(Seriously: Can't help. Sorry.)
-mpm

 

[Robert Baer]

I've been trying to rectify a fault on ferguson tv(25inc), model
no;d59f. the nature of the fault is; the tv always switches itself off
an on ,after sometime( with shrill noise from the line transformer ),
especially when connected to the aerial and tv station very bright. i
have removed the boost capacitor in the power supply with known good
one,but the problem still continue.i observed that when the tv is not
receiving broadcast signal,it will not switch off. i've injected a
video signal throughthe av input(bypassing the tuner), the result is
still the same.Arching is observed in the line transformer ,with
vertical dark line streaks when the tv is about to swich off.What
could be the cause of this?

Seems you know little about fixing TV sets.
Replace or rewind that transformer.

 

[Robert Baer]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in http://groups.google.com/group/sci.electronics.repair
http://groups.google.com/group/sci....s+sci.electronics.design-*-*-design+uu+repair

Look at it this way.. It's historic!
We get to see one of the last CRT TV repair posts in the time of LCD
domination.
Kinda sad too.. Poor schmuck probably gets stuck fixn Betamax VCRs and
8 tracks..


D from BC
British Columbia
Canada.

....or fixing a transistor radio that uses neutralization for the
Germanium transistors in the IF..

 

[Michael A. Terrell]

Yep. All the practical stuff I learned from puttering around in my
Dad's TV repair shop.

"ED"?? Isn't that Erectile Dysfunction ?

"Erratic Drivel", AKA: dimbulb.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Allan Herriman]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in http://groups.google.com/group/sci.electronics.repair
http://groups.google.com/group/sci....s+sci.electronics.design-*-*-design+uu+repair

Look at it this way.. It's historic!
We get to see one of the last CRT TV repair posts in the time of LCD
domination.
Kinda sad too.. Poor schmuck probably gets stuck fixn Betamax VCRs and
8 tracks..

The local technical college recently dropped its course in electronic
repair. It's a sign of the times. From now on, we'll only be
throwing things away when they break.

Allan

 

[Fred Bloggs]

I've been trying to rectify a fault on ferguson tv(25inc), model
no;d59f. the nature of the fault is; the tv always switches itself off
an on ,after sometime( with shrill noise from the line transformer ),
especially when connected to the aerial and tv station very bright. i
have removed the boost capacitor in the power supply with known good
one,but the problem still continue.i observed that when the tv is not
receiving broadcast signal,it will not switch off. i've injected a
video signal throughthe av input(bypassing the tuner), the result is
still the same.Arching is observed in the line transformer ,with
vertical dark line streaks when the tv is about to swich off.What
could be the cause of this?

It's a power supply problem somewhere obviously. Definitely not a good
sign to have audible and visual arcing occurring in the line
transformer, and there shouldn't be any type of circuit fault that would
cause this. You could make a temporary substitute for that transformer
and see if the problem goes away. The TV is chock full of all kinds of
fault shut-down circuitry and one or more of these can be triggered by
the transformer fault.

 

[Robert Baer]

kunleadewole2007@ yahoo.com wrote:

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in http://groups.google.com/group/sci.electronics.repair
http://groups.google.com/group/sci....s+sci.electronics.design-*-*-design+uu+repair

Look at it this way.. It's historic!
We get to see one of the last CRT TV repair posts in the time of LCD
domination.
Kinda sad too.. Poor schmuck probably gets stuck fixn Betamax VCRs and
8 tracks..

The local technical college recently dropped its course in electronic
repair. It's a sign of the times. From now on, we'll only be
throwing things away when they break.

Allan

Wake up and smell the roses; we have been in a throw-away "economy"
for at least 20 years...

 

[Allan Herriman]

kunleadewole2007@ yahoo.com wrote:

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in http://groups.google.com/group/sci.electronics.repair
http://groups.google.com/group/sci....s+sci.electronics.design-*-*-design+uu+repair

Look at it this way.. It's historic!
We get to see one of the last CRT TV repair posts in the time of LCD
domination.
Kinda sad too.. Poor schmuck probably gets stuck fixn Betamax VCRs and
8 tracks..

The local technical college recently dropped its course in electronic
repair. It's a sign of the times. From now on, we'll only be
throwing things away when they break.

Allan

Wake up and smell the roses; we have been in a throw-away "economy"
for at least 20 years...

I agree. I haven't repaired much equipment since the 1980s. It was
still disheartening to see the courses go.

Allan

 

[[email protected]]

[...]the tv always switches itself off an on[...]

Look at the name of this group again.
If you are DESIGNING a TV, this is the group.

TV **repair** is in news:sci.electronics.repair.http://groups.google.com/group/sci..../group/sci.electronics/msg/13651a897337a7a9?q...

Yes, This group is reserved for MI5 persecution posts!