I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

On Monday, 25 September 2017 12:07:40 UTC+1, Scott wrote:
I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

Can you open it & resolder the connections? That might or might not fix it.


NT

wrote:

Can you open it & resolder the connections? That might or might not fix it.

They're usually potted in silicone gunge ... I had one that gave the
occasional flicker, then got worse, until sometimes it wouldn't start,
then it went FOT, nothing too violent but game over.

I cannot imagine its dangerous, but it would be interesting to if it
flickers if you move it to one of the other fittings or if the flickering
stays in the same fitting.
Brian

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

Blind user, so no pictures please!
"Scott" wrote in message
...
I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

wrote in
:

On Monday, 25 September 2017 12:07:40 UTC+1, Scott wrote:
I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

Can you open it & resolder the connections? That might or might not
fix it.


NT

LED - not CFL?

Surprised you can't find a matching replacement. Can you uphotograph the
data markings and upload for the group to see?

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly designed.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

On Mon, 25 Sep 2017 15:49:31 +0100, "Brian Gaff"
wrote:

I cannot imagine its dangerous, but it would be interesting to if it
flickers if you move it to one of the other fittings or if the flickering
stays in the same fitting.
Brian

That's what I did to find out if it was the bulb or the light fitting
that was to blame. It's Edison screw so poor connection is always a
possibility. I don't know why this system is used.

On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards). I'm
not replacing that as it fits in with the decor of the room. Maybe I
should be buying five replacements from a reputable source rather than
trying to replace this one.

On Mon, 25 Sep 2017 15:58:57 GMT, DerbyBorn
wrote:

wrote in
:

On Monday, 25 September 2017 12:07:40 UTC+1, Scott wrote:
I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

Can you open it & resolder the connections? That might or might not
fix it.


NT

LED - not CFL?

Surprised you can't find a matching replacement. Can you uphotograph the
data markings and upload for the group to see?

I'm not sure how to do that but it's ES (27mm), 300 Lumens and 3000
Kelvin colour temp. Made by LUMiLIfe but I won't be buying that
again!

Scott wrote:

Maybe I should be buying five replacements from a reputable source
rather than trying to replace this one.

LumiLife is from LEDhut who are generally regarded as reputable.

I've had one golf-ball (out of three) from them go dodgy, I had the
receipt and it was within warranty, but I couldn't be arsed to send it
back, especially as I wanted to up the power from 4.5W

On Mon, 25 Sep 2017 17:56:01 +0100, Andy Burns
wrote:

Scott wrote:

Maybe I should be buying five replacements from a reputable source
rather than trying to replace this one.

LumiLife is from LEDhut who are generally regarded as reputable.

I've had one golf-ball (out of three) from them go dodgy, I had the
receipt and it was within warranty, but I couldn't be arsed to send it
back, especially as I wanted to up the power from 4.5W

I got a stack of MR16 spotlights that produced so much RF interference
they obliterated DAB radio reception. When I involved Trading
Standards and eventually returned them, they claimed they had not been
received and denied that the signature on the recorded delivery
receipt was that of one of their employees. She even argued that the
proof of delivery ('delivered from X sorting office') meant the
package was still in the sorting office. Once I demanded to speak to
a manager they then discovered the package was lying in their
warehouse having been delivered to them by the Royal Mail. .

Crap product from a crap company IMO.

"Scott" wrote in message
...
On Mon, 25 Sep 2017 15:49:31 +0100, "Brian Gaff"
wrote:

I cannot imagine its dangerous, but it would be interesting to if it
flickers if you move it to one of the other fittings or if the flickering
stays in the same fitting.
Brian

That's what I did to find out if it was the bulb or the light fitting
that was to blame. It's Edison screw so poor connection is always a
possibility. I don't know why this system is used.

Because it retains the bulb much more securely.

I've never found any of mine to be intermittent and in fact
one of the few BCs that I have is the intermittent one.

"Scott" wrote in message
...
On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards).

Yeah, that's what I meant. IMO its time to replace those.

I'm not replacing that as it fits in with the decor of the room.
Maybe I should be buying five replacements from a reputable
source rather than trying to replace this one.

I'd still go for a single one myself.

On Tue, 26 Sep 2017 03:59:48 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
.. .
On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards).

Yeah, that's what I meant. IMO its time to replace those.

I'm not replacing that as it fits in with the decor of the room.
Maybe I should be buying five replacements from a reputable
source rather than trying to replace this one.

I'd still go for a single one myself.

In a 100 year old building in a room with high ceiling, traditionally
furnished with a light fitting that fits in with the decor?

On 25/09/2017 17:33, Scott wrote:
On Mon, 25 Sep 2017 15:58:57 GMT, DerbyBorn
wrote:

wrote in
:

On Monday, 25 September 2017 12:07:40 UTC+1, Scott wrote:
I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

Can you open it & resolder the connections? That might or might not
fix it.


NT

LED - not CFL?

Surprised you can't find a matching replacement. Can you uphotograph the
data markings and upload for the group to see?

I'm not sure how to do that but it's ES (27mm), 300 Lumens and 3000
Kelvin colour temp. Made by LUMiLIfe but I won't be buying that
again!

Like this one?

https://www.ledhut.co.uk/6-watt-edis...placement.html

"Scott" wrote in message
...
On Tue, 26 Sep 2017 03:59:48 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
. ..
On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards).

Yeah, that's what I meant. IMO its time to replace those.

I'm not replacing that as it fits in with the decor of the room.
Maybe I should be buying five replacements from a reputable
source rather than trying to replace this one.

I'd still go for a single one myself.

In a 100 year old building in a room with high ceiling, traditionally
furnished with a light fitting that fits in with the decor?

You don't have to have those fake chandelier things to do that.

On Mon, 25 Sep 2017 19:37:10 +0100, Fredxxx wrote:

On 25/09/2017 17:33, Scott wrote:
On Mon, 25 Sep 2017 15:58:57 GMT, DerbyBorn
wrote:

wrote in
:

On Monday, 25 September 2017 12:07:40 UTC+1, Scott wrote:
I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

Can you open it & resolder the connections? That might or might not
fix it.


NT

LED - not CFL?

Surprised you can't find a matching replacement. Can you uphotograph the
data markings and upload for the group to see?

I'm not sure how to do that but it's ES (27mm), 300 Lumens and 3000
Kelvin colour temp. Made by LUMiLIfe but I won't be buying that
again!

Like this one?

https://www.ledhut.co.uk/6-watt-edis...placement.html

No - substantial mismatch. The ones I have are 300 Lumens and this is
470. Colour temperature of the ones I have is 3000K and this is
2700K. The ones I have are 25W replacement and this is 40W
replacement.

In summary, the one you suggest would be too bright and redder than
the others.

On Tue, 26 Sep 2017 04:51:53 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
.. .
On Tue, 26 Sep 2017 03:59:48 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
...
On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards).

Yeah, that's what I meant. IMO its time to replace those.

I'm not replacing that as it fits in with the decor of the room.
Maybe I should be buying five replacements from a reputable
source rather than trying to replace this one.

I'd still go for a single one myself.

In a 100 year old building in a room with high ceiling, traditionally
furnished with a light fitting that fits in with the decor?

You don't have to have those fake chandelier things to do that.

Not fake chandaliers actually but five uplights on arms. I will
however take a look in John Lewis but I doubt if one LED could
illuminate a large room.

On Mon, 25 Sep 2017 12:07:34 +0100, Scott wrote:

I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of five
and I cannot find an identical unit so I would be left with one that
looks a bit odd or having to replace all five.

It might be worth checking out your local Poundland or Poundworld for
six quid's worth of 3W 240 Lm ses candle lamps[1] (assuming your 5 lamp
chandelier[2] uses that common ses lamp socket size). At that price, it's
well worth buying an extra lamp as a spare or, as it turned out in my
case, to let you complete the re-lamping in one go when one of the set
proves to be a dud (in which case, you return said dud to exchange for a
working spare at your own convenience).

[1] If your luminary accepts the larger size of lamp, you may be able to
fit the larger and brighter 5W 380 Lm size of candle lamp.

[2] In view of the location and the need for matching the replacement to
the existing lamps, I've made a reasonable assumption that a 5 lamp
chandelier is involved. Apologies if I've made an ASS out of U and ME. :-)

--
Johnny B Good

On Mon, 25 Sep 2017 21:17:17 GMT, Johnny B Good
wrote:

On Mon, 25 Sep 2017 12:07:34 +0100, Scott wrote:

I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of five
and I cannot find an identical unit so I would be left with one that
looks a bit odd or having to replace all five.

It might be worth checking out your local Poundland or Poundworld for
six quid's worth of 3W 240 Lm ses candle lamps[1] (assuming your 5 lamp
chandelier[2] uses that common ses lamp socket size). At that price, it's
well worth buying an extra lamp as a spare or, as it turned out in my
case, to let you complete the re-lamping in one go when one of the set
proves to be a dud (in which case, you return said dud to exchange for a
working spare at your own convenience).

[1] If your luminary accepts the larger size of lamp, you may be able to
fit the larger and brighter 5W 380 Lm size of candle lamp.

It is full size (27mm) Edison screw. This is the problem. I am
trying to avoid the replacement being much brighter than the existing
lamp. Also,a candle lamp would look out of place against globes. I
wonder from my photograpy days how critical this is as I think it
takes a doubling of power output to provide an increase of one stop.

[2] In view of the location and the need for matching the replacement to
the existing lamps, I've made a reasonable assumption that a 5 lamp
chandelier is involved. Apologies if I've made an ASS out of U and ME. :-)

That's right - five lamps each 4.5W. .

LED bulbs have clever electronics in them,
different bulbs have different electronics,
so all 5 should be the same type
(use the existing bulbs elsewhere)

I've been watching BigDave's videos
and learning about LEDs today.
https://www.youtube.com/watch?v=Nme8T2yLhL0

george

"Scott" wrote in message
...
On Tue, 26 Sep 2017 04:51:53 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
. ..
On Tue, 26 Sep 2017 03:59:48 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
m...
On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly
designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards).

Yeah, that's what I meant. IMO its time to replace those.

I'm not replacing that as it fits in with the decor of the room.
Maybe I should be buying five replacements from a reputable
source rather than trying to replace this one.

I'd still go for a single one myself.

In a 100 year old building in a room with high ceiling, traditionally
furnished with a light fitting that fits in with the decor?

You don't have to have those fake chandelier things to do that.

Not fake chandaliers actually

The multiples are. They didn't have very bright bulbs then inside houses.

but five uplights on arms. I will however take a look in John
Lewis but I doubt if one LED could illuminate a large room.

Sure, but you certainly don't need 5 anymore.

On Mon, 25 Sep 2017 22:46:43 +0100, Scott wrote:

On Mon, 25 Sep 2017 21:17:17 GMT, Johnny B Good
wrote:

On Mon, 25 Sep 2017 12:07:34 +0100, Scott wrote:

I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

It might be worth checking out your local Poundland or Poundworld for
six quid's worth of 3W 240 Lm ses candle lamps[1] (assuming your 5 lamp
chandelier[2] uses that common ses lamp socket size). At that price,
it's well worth buying an extra lamp as a spare or, as it turned out in
my case, to let you complete the re-lamping in one go when one of the
set proves to be a dud (in which case, you return said dud to exchange
for a working spare at your own convenience).

[1] If your luminary accepts the larger size of lamp, you may be able to
fit the larger and brighter 5W 380 Lm size of candle lamp.

It is full size (27mm) Edison screw. This is the problem. I am trying
to avoid the replacement being much brighter than the existing lamp.
Also,a candle lamp would look out of place against globes. I wonder
from my photograpy days how critical this is as I think it takes a
doubling of power output to provide an increase of one stop.

This last is correct, each doubling of lumen output corresponds to a one
stop increase for any given shutter speed at any one iso speed rating. A
quadrupling of lumen output is two stop's worth with 3 stop's worth
requiring an octupling of lumen output.

You say a candle lamp would look out of place against globes. It seems
to me that your chandelier is using standard A60 E26 GLS lamps. If this
is the case, the solution is even better. Go to your handiest Poundland
or Poundworld shop and purchase half a dozen 6W 470lm 3000K A60 E26 GLS
lamps (a full set and a spare). Don't be tempted to substitute with their
5.5W 470lm golfball LES lamps which use too compact a diffuser envelope
to prevent the LED assembly overheating and failing prematurely.


[2] In view of the location and the need for matching the replacement to
the existing lamps, I've made a reasonable assumption that a 5 lamp
chandelier is involved. Apologies if I've made an ASS out of U and ME.
:-)

That's right - five lamps each 4.5W. .

300lm at 4.5W is a rather shoddy 66.7lm per watt, only as efficient as
the most efficient of CFLs. Even Poundland/Poundworld can do better than
that with their 6W 470lm A60 BC22 and A60 E26 GLS lamps at a barely
acceptable 78.3lm/per watt. What makes 'barely acceptable' acceptable in
this case is the low price tag of a quid per lamp. :-)

In most domestic lighting scenarios, you usually have to go out of your
way to land up with 'Too much illumination'. An increase from 300 to
470lm per lamp represents just over half a stop improvement in
photographic terms and one that's likely to be perceived as a much
welcomed and overdue improvement.

--
Johnny B Good

On Tue, 26 Sep 2017 09:23:46 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
.. .
On Tue, 26 Sep 2017 04:51:53 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
...
On Tue, 26 Sep 2017 03:59:48 +1000, "Rod Speed"
wrote:



"Scott" wrote in message
om...
On Tue, 26 Sep 2017 02:14:17 +1000, "Rod Speed"
wrote:

Scott wrote

I have an LED bulb in my lounge that flickers a bit on start-up.
Are there any safey implications?

Nope, its likely just got the wrong type of dimmer or is badly
designed.

There's no dimmer involved. Your second point could be right. I
bought other bulbs from the same supplier (online) and had to return a
lot of them.

I have no objection in principle to replacing it - which
is what I would normally do - but it is one of five and
I cannot find an identical unit so I would be left with
one that looks a bit odd or having to replace all five.

IMO its starting to be the time when those multiples
are better replaced with a single well designed one.

It's a ceiling light that takes five bulbs (pointing upwards).

Yeah, that's what I meant. IMO its time to replace those.

I'm not replacing that as it fits in with the decor of the room.
Maybe I should be buying five replacements from a reputable
source rather than trying to replace this one.

I'd still go for a single one myself.

In a 100 year old building in a room with high ceiling, traditionally
furnished with a light fitting that fits in with the decor?

You don't have to have those fake chandelier things to do that.

Not fake chandaliers actually

The multiples are. They didn't have very bright bulbs then inside houses.

but five uplights on arms. I will however take a look in John
Lewis but I doubt if one LED could illuminate a large room.

Sure, but you certainly don't need 5 anymore.

I think I misunderstood the word chandalier. I thought it referred
only to crystal design but I see it refers to pretty much any ceiling
light.

On Mon, 25 Sep 2017 14:52:27 -0700 (PDT)
DICEGEORGE wrote:

LED bulbs have clever electronics in them,
different bulbs have different electronics,
so all 5 should be the same type
(use the existing bulbs elsewhere)

I've been watching BigDave's videos
and learning about LEDs today.
https://www.youtube.com/watch?v=Nme8T2yLhL0

Big Clive.

On Mon, 25 Sep 2017 12:07:34 +0100, Scott
wrote:

I have an LED bulb in my lounge that flickers a bit on start-up. Are
there any safey implications? I have no objection in principle to
replacing it - which is what I would normally do - but it is one of
five and I cannot find an identical unit so I would be left with one
that looks a bit odd or having to replace all five.

Thanks for all the advice. It seems the cool white are far more
diffiicult to source than the warm white. I tried warm white from
Poundland but they were too dim and too yellow. I have ordered more
expensive bulbs online. These are 470 lumens which, as has been
pointed out, is less than one stop's difference in photographic terms
to the ones I had.