Weird light issue
 

Hi All,

A friend was around yesterday and she was describing an issue she is having with one of her lights. In the bathroom she has a number of spot lights (believed to by 240v) and when switch on, all lights come on as normal. When she turns them off, one of the lights flashes on and off continually. It would appear as though this is fully on then fully off (i.e. not dim).

This has only recently started to happen and no work has been done on the house to suddenly cause it. I did wonder if for some reason an emergency light was fitted (i.e. as in offices where they come on in the event of power loss) but apparently they are all the same and no little led lights on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone have any ideas?

thanks

Lee.

Weird light issue
 

Lee Nowell wrote in
:

Hi All,

A friend was around yesterday and she was describing an issue she is
having with one of her lights. In the bathroom she has a number of
spot lights (believed to by 240v) and when switch on, all lights come
on as normal. When she turns them off, one of the lights flashes on
and off continually. It would appear as though this is fully on then
fully off (i.e. not dim).

This has only recently started to happen and no work has been done on
the house to suddenly cause it. I did wonder if for some reason an
emergency light was fitted (i.e. as in offices where they come on in
the event of power loss) but apparently they are all the same and no
little led lights on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone
have any ideas?

thanks

Lee.


So - you imply a dimmer switch is in the circuit? /Is it a touch or
remote type?

Weird light issue
 

Sorry didn't mean to imply dimmer. Was trying to say that the on state when flashing seems to imply mains live and not some sort of residual current from somewhere (where I would have assumed the bulb would be dim).

Weird light issue
 

Lee Nowell wrote:

In the bathroom she has a number of spot lights (believed to by
240v) and when switch on, all lights come on as normal. When she
turns them off, one of the lights flashes on and off continually.
Has one of the incandescent or CFLs have been replaced with an LED? if
the cables to the light run parallel to other cables they could have
enough capacitance that lets the PSU inside the LED slowly "suck up"
enough power to give a brief flash, then rinse and repeat.

Another possibility, is if the lamps turn out to be 12V halogens with a
transformer, rather than 240V, a transformer might have gone faulty.

Weird light issue
 

On Friday, 23 August 2019 14:59:04 UTC+1, Andy Burns wrote:
Lee Nowell wrote:

In the bathroom she has a number of spot lights (believed to by
240v) and when switch on, all lights come on as normal. When she
turns them off, one of the lights flashes on and off continually.
Has one of the incandescent or CFLs have been replaced with an LED? if
the cables to the light run parallel to other cables they could have
enough capacitance that lets the PSU inside the LED slowly "suck up"
enough power to give a brief flash, then rinse and repeat.

Another possibility, is if the lamps turn out to be 12V halogens with a
transformer, rather than 240V, a transformer might have gone faulty.

Will check the LED.... I too was originally thinking dud transformer but then was thinking that might be the case if the light flashed on a few times due to the capacitance on the transformer but given it apparently goes on "for ever" I ruled that out. Have got her to send me some photos too which may unpick things

Weird light issue
 

On 23/08/2019 13:38, Lee Nowell wrote:
Hi All,

A friend was around yesterday and she was describing an issue she is having with one of her lights. In the bathroom she has a number of spot lights (believed to by 240v) and when switch on, all lights come on as normal. When she turns them off, one of the lights flashes on and off continually. It would appear as though this is fully on then fully off (i.e. not dim).

This has only recently started to happen and no work has been done on the house to suddenly cause it. I did wonder if for some reason an emergency light was fitted (i.e. as in offices where they come on in the event of power loss) but apparently they are all the same and no little led lights on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone have any ideas?

I can think of dozens

thanks

Lee.



--
"In our post-modern world, climate science is not powerful because it is
true: it is true because it is powerful."

Lucas Bergkamp

Weird light issue
 

On 23/08/2019 14:15, Lee Nowell wrote:
Sorry didn't mean to imply dimmer. Was trying to say that the on
state when flashing seems to imply mains live and not some sort of
residual current from somewhere (where I would have assumed the bulb
would be dim).

Not if its an LED.

Or a fluorecscent



--
€œwhen things get difficult you just have to lie€�

€• Jean Claud Jüncker

Weird light issue
 

On 23/08/2019 14:58, Andy Burns wrote:
Lee Nowell wrote:

In the bathroom she has a number of spot lights (believed to by 240v)
and when switch on, all lights come on as normal. When she
turns them off, one of the lights flashes on and off continually.
Has one of the incandescent or CFLs have been replaced with an LED?Â* if
the cables to the light run parallel to other cables they could have
enough capacitance that lets the PSU inside the LED slowly "suck up"
enough power to give a brief flash, then rinse and repeat.

Another possibility, is if the lamps turn out to be 12V halogens with a
transformer, rather than 240V, a transformer might have gone faulty.

If it has, take it out and patent it.

A transformer that produces voltage on the incendiary with the primary
underpowered would be worth billions and a Nobel prize.


--
€œwhen things get difficult you just have to lie€�

€• Jean Claus Jüncker

Weird light issue
 

On Friday, 23 August 2019 13:38:33 UTC+1, Lee Nowell wrote:
Hi All,

A friend was around yesterday and she was describing an issue she is having with one of her lights. In the bathroom she has a number of spot lights (believed to by 240v) and when switch on, all lights come on as normal. When she turns them off, one of the lights flashes on and off continually. It would appear as though this is fully on then fully off (i.e. not dim).

This has only recently started to happen and no work has been done on the house to suddenly cause it. I did wonder if for some reason an emergency light was fitted (i.e. as in offices where they come on in the event of power loss) but apparently they are all the same and no little led lights on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone have any ideas?

thanks

Lee.

Possibles:
1. Leakage R in bulb has gone o/c, now it's powering from capacitive cable coupling
2. dodgy switch or wiring


NT

Weird light issue
 

wrote in message
...
On Friday, 23 August 2019 13:38:33 UTC+1, Lee Nowell wrote:
Hi All,

A friend was around yesterday and she was describing an issue she is
having with one of her lights. In the bathroom she has a number of spot
lights (believed to by 240v) and when switch on, all lights come on as
normal. When she turns them off, one of the lights flashes on and off
continually. It would appear as though this is fully on then fully off
(i.e. not dim).

This has only recently started to happen and no work has been done on the
house to suddenly cause it. I did wonder if for some reason an emergency
light was fitted (i.e. as in offices where they come on in the event of
power loss) but apparently they are all the same and no little led lights
on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone have
any ideas?

thanks

Lee.

Possibles:
1. Leakage R in bulb has gone o/c, now it's powering from capacitive cable
coupling

2. dodgy switch or wiring

Never seen a dodgy switch or wiring do anything like that. Dont believe it.

Weird light issue
 

Well first swap the lamp between sockets. If it moves then its the lamp. I'm
assuming these are LEDs?
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Lee Nowell" wrote in message
...
Hi All,

A friend was around yesterday and she was describing an issue she is having
with one of her lights. In the bathroom she has a number of spot lights
(believed to by 240v) and when switch on, all lights come on as normal.
When she turns them off, one of the lights flashes on and off continually.
It would appear as though this is fully on then fully off (i.e. not dim).

This has only recently started to happen and no work has been done on the
house to suddenly cause it. I did wonder if for some reason an emergency
light was fitted (i.e. as in offices where they come on in the event of
power loss) but apparently they are all the same and no little led lights on
them to indicate these.

I can not think of anything that could cause this behaviour. Anyone have any
ideas?

thanks

Lee.

Weird light issue
 

Dodgy spell check, must be related to mine. Yes I agree something like that
has to be rather more than a faulty transformer.

Swapping bulbs will prove the point and reveal the culprit as I said.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"The Natural Philosopher" wrote in message
...
On 23/08/2019 14:58, Andy Burns wrote:
Lee Nowell wrote:

In the bathroom she has a number of spot lights (believed to by 240v)
and when switch on, all lights come on as normal. When she
turns them off, one of the lights flashes on and off continually.
Has one of the incandescent or CFLs have been replaced with an LED? if
the cables to the light run parallel to other cables they could have
enough capacitance that lets the PSU inside the LED slowly "suck up"
enough power to give a brief flash, then rinse and repeat.

Another possibility, is if the lamps turn out to be 12V halogens with a
transformer, rather than 240V, a transformer might have gone faulty.

If it has, take it out and patent it.

A transformer that produces voltage on the incendiary with the primary
underpowered would be worth billions and a Nobel prize.


--
"when things get difficult you just have to lie"

? Jean Claus Jüncker

Weird light issue
 

I can recall many years ago when Leds were in their infancy the almost on
problem afflicted on, and the fix, in the end was a 1 megohm resistor across
the socket.
Weird things LEDs.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Chris Hogg" wrote in message
...
On Fri, 23 Aug 2019 18:57:46 +0100, The Natural Philosopher
wrote:

On 23/08/2019 14:58, Andy Burns wrote:
Lee Nowell wrote:

In the bathroom she has a number of spot lights (believed to by 240v)
and when switch on, all lights come on as normal. When she
turns them off, one of the lights flashes on and off continually.
Has one of the incandescent or CFLs have been replaced with an LED? if
the cables to the light run parallel to other cables they could have
enough capacitance that lets the PSU inside the LED slowly "suck up"
enough power to give a brief flash, then rinse and repeat.

Another possibility, is if the lamps turn out to be 12V halogens with a
transformer, rather than 240V, a transformer might have gone faulty.

If it has, take it out and patent it.

A transformer that produces voltage on the incendiary with the primary
^^^^^^^^^^
underpowered would be worth billions and a Nobel prize.
^^^
chuckle

--

Chris

Lonely Psychopathic Senile Ozzie Troll Alert!
 

On Sat, 24 Aug 2019 15:57:31 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


Possibles:
1. Leakage R in bulb has gone o/c, now it's powering from capacitive cable
coupling

2. dodgy switch or wiring

Never seen a dodgy switch or wiring do anything like that. Don¢t believe it.

Like which sane person gives a **** what you saw or didn't see, or believe
and don't believe?

--
pamela about Rot Speed:
"His off the cuff expertise demonstrates how little he knows..."
MID:

Weird light issue
 

On 24/08/2019 06:57, Rod Speed wrote:
wrote in message
...
On Friday, 23 August 2019 13:38:33 UTC+1, Lee NowellÂ* wrote:

Hi All,

A friend was around yesterday and she was describing an issue she is
having with one of her lights.Â* In the bathroom she has a number of
spot lights (believed to by 240v) and when switch on, all lights come
on as normal.Â* When she turns them off, one of the lights flashes on
and off continually.Â* It would appear as though this is fully on then
fully off (i.e. not dim).

This has only recently started to happen and no work has been done on
the house to suddenly cause it.Â* I did wonder if for some reason an
emergency light was fitted (i.e. as in offices where they come on in
the event of power loss) but apparently they are all the same and no
little led lights on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone
have any ideas?

thanks

Possibles:
1. Leakage R in bulb has gone o/c, now it's powering from capacitive
cable coupling

2. dodgy switch or wiring

Never seen a dodgy switch or wiring do anything like that. Dont believe
it.

The place I was at before had a weird switch in the bedroom with a dial
and stuff which I assume was to turn the lights on and off arbitrarily
to confuse burglars. I could never work it out, but some (but not all)
CFLs used to flicker continuously when the switch was off - I assume
that the electronics used the load as a return connection as switches
usually only have access to the line connection.

--
Max Demian

Weird light issue
 

"Max Demian" wrote in message
o.uk...
On 24/08/2019 06:57, Rod Speed wrote:
wrote in message
...
On Friday, 23 August 2019 13:38:33 UTC+1, Lee Nowell wrote:

Hi All,

A friend was around yesterday and she was describing an issue she is
having with one of her lights. In the bathroom she has a number of
spot lights (believed to by 240v) and when switch on, all lights come
on as normal. When she turns them off, one of the lights flashes on
and off continually. It would appear as though this is fully on then
fully off (i.e. not dim).

This has only recently started to happen and no work has been done on
the house to suddenly cause it. I did wonder if for some reason an
emergency light was fitted (i.e. as in offices where they come on in
the event of power loss) but apparently they are all the same and no
little led lights on them to indicate these.

I can not think of anything that could cause this behaviour. Anyone
have any ideas?

thanks

Possibles:
1. Leakage R in bulb has gone o/c, now it's powering from capacitive
cable coupling

2. dodgy switch or wiring

Never seen a dodgy switch or wiring do anything like that. Dont believe
it.

The place I was at before had a weird switch in the bedroom with a dial
and stuff which I assume was to turn the lights on and off arbitrarily to
confuse burglars. I could never work it out, but some (but not all) CFLs
used to flicker continuously when the switch was off - I assume that the
electronics used the load as a return connection as switches usually only
have access to the line connection.

Sure, but thats nothing like the repeated fully on and fully off she sees.

Lonely Psychopathic Senile Ozzie Troll Alert!
 

On Sun, 25 Aug 2019 08:06:07 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


Sure, but

Sure, but NOBODY even talked to you, cretin!

--
Sqwertz to Rot Speed:
"This is just a hunch, but I'm betting you're kinda an argumentative
asshole.
MID:

Weird light issue
 

On 24/08/2019 06:57, Rod Speed wrote:

Never seen a dodgy switch or wiring do anything like that. Dont believe
it.

I once had a failed switch with carbonised contacts caused by long term
arcing.

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Weird light issue
 

alan_m wrote
Rod Speed wrote

Never seen a dodgy switch or wiring do anything like that. Dont believe
it.

I once had a failed switch with carbonised contacts caused by long term
arcing.

Sure, but that doesnt see the light keep flashing fully on and fully off
when its switched off.

Lonely Psychopathic Senile Ozzie Troll Alert!
 

On Thu, 29 Aug 2019 16:27:42 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


I once had a failed switch with carbonised contacts caused by long term
arcing.

Sure, but that doesn¢t see the light keep flashing fully on and fully off
when its switched off.

I'll eventually switch YOU off, senile pest! Just wait and see! LOL

--
Website (from 2007) dedicated to the 85-year-old trolling senile
cretin from Oz:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

Weird light issue
 

On Thursday, 29 August 2019 07:27:54 UTC+1, Rod Speed wrote:
alan_m wrote
Rod Speed wrote

Never seen a dodgy switch or wiring do anything like that. Dont believe
it.

I once had a failed switch with carbonised contacts caused by long term
arcing.

Sure, but that doesnt see the light keep flashing fully on and fully off
when its switched off.

Sounds like something is acting like a bi-=metalic strip or perhaps a spider ;-)

Weird light issue
 

"whisky-dave" wrote in message
...
On Thursday, 29 August 2019 07:27:54 UTC+1, Rod Speed wrote:
alan_m wrote
Rod Speed wrote

Never seen a dodgy switch or wiring do anything like that. Dont
believe
it.

I once had a failed switch with carbonised contacts caused by long term
arcing.

Sure, but that doesnt see the light keep flashing fully on and fully off
when its switched off.

Sounds like something is acting like a bi-=metalic strip

Yeah, tho those arent normally very fast. Forget if the op said how fast it
toggles.

or perhaps a spider ;-)

Unlikely too many spider would keep doing it over and over again.
A monkey might but you dont get too many of those inside a light switch.

Lonely Psychopathic Senile Ozzie Troll Alert!
 

On Fri, 30 Aug 2019 07:25:21 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


Yeah, tho those arent normally very fast. Forget if the op said how fast it
toggles.

or perhaps a spider ;-)

Unlikely too many spider would keep doing it over and over again.
A monkey might but you don¢t get too many of those inside a light switch.

What a load of retarded bull**** again! tsk

--
Website (from 2007) dedicated to the 85-year-old trolling senile
cretin from Oz:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

Weird light issue
 

On 29/08/2019 22:25, Rod Speed wrote:

A monkey might but you dont get too many of those inside a light switch.

How many monkeys does it take to screw in a light bulb?
Two, but they have to be very small.


--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Weird light issue
 

alan_m wrote
Rod Speed wrote

A monkey might but you dont get too many of those inside a light switch.

How many monkeys does it take to screw in a light bulb?
Two, but they have to be very small.

I'd have you publicly flogged again if you hadn't enjoyed that so much the
last time, boy.

Lonely Psychopathic Senile Ozzie Troll Alert!
 

On Sat, 31 Aug 2019 14:23:46 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


I'd have you publicly flogged again if you hadn't enjoyed that so much the
last time, boy.

It was YOU who got publicly flogged with this website dedicated to your
insipid trolling, senile Rodent:

https://www.pcreview.co.uk/threads/r...d-faq.2973853/

--
"Anonymous" to trolling senile Rot Speed:
"You can **** off as you know less than pig **** you sad
little ignorant ****."
MID: