Discussion Forum: Thread 370911

 Author: pcthurman View Messages Posted By pcthurman
 Posted: Jul 7, 2025 15:02
 Subject: Replacement bulb
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pcthurman (1424)

Location:  USA, Virginia
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Hi,
I am wondering if anyone has ever replaced the bulb in
 
Part No: 08010dc01  Name: Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
* 
08010dc01 Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
Parts: Electric, Light & Sound {Yellow}

and if so, where did the bulb come from and any other specifics I should know?

Thanks much,
Cass T
 Author: TheBrickGuys View Messages Posted By TheBrickGuys
 Posted: Jul 8, 2025 11:07
 Subject: Re: Replacement bulb
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TheBrickGuys (15008)

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In Help, pcthurman writes:
  Hi,
I am wondering if anyone has ever replaced the bulb in
 
Part No: 08010dc01  Name: Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
* 
08010dc01 Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
Parts: Electric, Light & Sound {Yellow}

and if so, where did the bulb come from and any other specifics I should know?

Thanks much,
Cass T

It doesn't look like it even comes apart. If there are no screws then the
assembly is probably glued so that it cant come apart when playing with it and
so you would probably have to break it to open it.

Jim
 Author: pcthurman View Messages Posted By pcthurman
 Posted: Jul 8, 2025 12:17
 Subject: Re: Replacement bulb
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pcthurman (1424)

Location:  USA, Virginia
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In Help, TheBrickGuys writes:
  In Help, pcthurman writes:
  Hi,
I am wondering if anyone has ever replaced the bulb in
 
Part No: 08010dc01  Name: Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
* 
08010dc01 Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
Parts: Electric, Light & Sound {Yellow}

and if so, where did the bulb come from and any other specifics I should know?

Thanks much,
Cass T

It doesn't look like it even comes apart. If there are no screws then the
assembly is probably glued so that it cant come apart when playing with it and
so you would probably have to break it to open it.

Jim

Hi Jim,
I have taken it apart, it was not glued, and I have taken the bulb out. The outer
yellow case is in great condition as is the trans-clear inner part. I can put
it back together again, but I need a working bulb and I have no idea what or
where to look for 1.

Cass T
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Jul 8, 2025 12:28
 Subject: Re: Replacement bulb
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SylvainLS (52)

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In Help, pcthurman writes:
  […]
Hi Jim,
I have taken it apart, it was not glued, and I have taken the bulb out. The outer
yellow case is in great condition as is the trans-clear inner part. I can put
it back together again,

That’s cool


   but I need a working bulb and I have no idea what or
where to look for 1.

Google Lens to find a similar bulb.

Otherwise, I’d say any 4.5V light bulb (of the right size) should work.
It’s DC; bulbs work both ways (no polarity); it’s not rocket surgery.
 Author: pcthurman View Messages Posted By pcthurman
 Posted: Jul 9, 2025 00:39
 Subject: Re: Replacement bulb
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pcthurman (1424)

Location:  USA, Virginia
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In Help, SylvainLS writes:
  In Help, pcthurman writes:
  […]
Hi Jim,
I have taken it apart, it was not glued, and I have taken the bulb out. The outer
yellow case is in great condition as is the trans-clear inner part. I can put
it back together again,

That’s cool


   but I need a working bulb and I have no idea what or
where to look for 1.

Google Lens to find a similar bulb.

Otherwise, I’d say any 4.5V light bulb (of the right size) should work.
It’s DC; bulbs work both ways (no polarity); it’s not rocket surgery.

Thank you for the suggestion! To me, it is rocket surgery
 Author: bb-408947 View Messages Posted By bb-408947
 Posted: Jul 8, 2025 17:45
 Subject: Re: Replacement bulb
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bb-408947 (146)

Location:  Sweden
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In Help, pcthurman writes:
  In Help, TheBrickGuys writes:
  In Help, pcthurman writes:
  Hi,
I am wondering if anyone has ever replaced the bulb in
 
Part No: 08010dc01  Name: Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
* 
08010dc01 Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
Parts: Electric, Light & Sound {Yellow}

and if so, where did the bulb come from and any other specifics I should know?

Thanks much,
Cass T

It doesn't look like it even comes apart. If there are no screws then the
assembly is probably glued so that it cant come apart when playing with it and
so you would probably have to break it to open it.

Jim

Hi Jim,
I have taken it apart, it was not glued, and I have taken the bulb out. The outer
yellow case is in great condition as is the trans-clear inner part. I can put
it back together again, but I need a working bulb and I have no idea what or
where to look for 1.

Cass T

Do you have any picture of it taken apart and on the bulb (for future reference)?
 Author: pcthurman View Messages Posted By pcthurman
 Posted: Jul 9, 2025 00:41
 Subject: Re: Replacement bulb
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pcthurman (1424)

Location:  USA, Virginia
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In Help, taxan writes:
  In Help, pcthurman writes:
  In Help, TheBrickGuys writes:
  In Help, pcthurman writes:
  Hi,
I am wondering if anyone has ever replaced the bulb in
 
Part No: 08010dc01  Name: Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
* 
08010dc01 Electric, Light Brick 4.5V 2 x 2 with 3 Plug Holes, Trans-Clear Diffuser Lens
Parts: Electric, Light & Sound {Yellow}

and if so, where did the bulb come from and any other specifics I should know?

Thanks much,
Cass T

It doesn't look like it even comes apart. If there are no screws then the
assembly is probably glued so that it cant come apart when playing with it and
so you would probably have to break it to open it.

Jim

Hi Jim,
I have taken it apart, it was not glued, and I have taken the bulb out. The outer
yellow case is in great condition as is the trans-clear inner part. I can put
it back together again, but I need a working bulb and I have no idea what or
where to look for 1.

Cass T

Do you have any picture of it taken apart and on the bulb (for future reference)?

I can certainly take a few pictures. Getting them to upload to Bricklink is a
whole other can of worms though. I will give it a try tomorrow.
 Author: yorbrick View Messages Posted By yorbrick
 Posted: Jul 9, 2025 03:45
 Subject: Re: Replacement bulb
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yorbrick (1207)

Location:  United Kingdom, England
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I don't know what the internals of this are like. It might be a good idea
to practice putting the broken bulb back in, especially if it is more complicated
than a screw in bulb.
 Author: novabrick View Messages Posted By novabrick
 Posted: Jul 9, 2025 08:56
 Subject: Re: Replacement bulb
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novabrick (15218)

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Here's a broken one I butchered apart.
The clear plastic was glued in place
It looks to me that the wires of the bulb are between the contact and the plastic.
I broke the wires unfortunately.
These parts have not been made with maintanance in mind.

Christian

novabrick-team


In Help, yorbrick writes:
  I don't know what the internals of this are like. It might be a good idea
to practice putting the broken bulb back in, especially if it is more complicated
than a screw in bulb.
 


 Author: yorbrick View Messages Posted By yorbrick
 Posted: Jul 9, 2025 10:04
 Subject: Re: Replacement bulb
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yorbrick (1207)

Location:  United Kingdom, England
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In Help, novabrick writes:
  Here's a broken one I butchered apart.
The clear plastic was glued in place
It looks to me that the wires of the bulb are between the contact and the plastic.
I broke the wires unfortunately.
These parts have not been made with maintanance in mind.


If I was going to try to repair that, I think I'd cut off the wires as close
to the bulb as possible, leaving as much wire as possible, then wrap the wires
of the new bulb around the stumps that were left, then fill it with hot glue
so it doesn't move. Soldering a new bulb in to those existing ring shaped
contacts might be difficult as you'd probably end up melting the plastic
before you melt the solder. Unless you can take the contacts out then push them
back in again once soldered.
 Author: bb-408947 View Messages Posted By bb-408947
 Posted: Jul 9, 2025 14:52
 Subject: Re: Replacement bulb
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bb-408947 (146)

Location:  Sweden
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In Help, novabrick writes:
  Here's a broken one I butchered apart.
The clear plastic was glued in place
It looks to me that the wires of the bulb are between the contact and the plastic.
I broke the wires unfortunately.
These parts have not been made with maintanance in mind.

Christian

novabrick-team


In Help, yorbrick writes:
  I don't know what the internals of this are like. It might be a good idea
to practice putting the broken bulb back in, especially if it is more complicated
than a screw in bulb.

Thanks for the picture.
If you know how to soldering you can replace it with a White LED and a series
resistor.
Most White LED are on 3-3.2v that mean you need a resistor that is around 75
ohm.
 
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Jul 9, 2025 15:10
 Subject: Re: Replacement bulb
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SylvainLS (52)

Location:  France, Nouvelle-Aquitaine
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In Help, taxan writes:
  […]
Thanks for the picture.
If you know how to soldering you can replace it with a White LED and a series
resistor.
Most White LED are on 3-3.2v that mean you need a resistor that is around 75
ohm.

LEDs have a polarity.  If you plug it the wrong way, at best it doesn’t work,
at worst it’s dead… well, okay, at 4.5V, I don’t think you’ll total it but
that changes how the LEGO part works.
 Author: bb-408947 View Messages Posted By bb-408947
 Posted: Jul 9, 2025 17:33
 Subject: Re: Replacement bulb
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bb-408947 (146)

Location:  Sweden
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In Help, SylvainLS writes:
  In Help, taxan writes:
  […]
Thanks for the picture.
If you know how to soldering you can replace it with a White LED and a series
resistor.
Most White LED are on 3-3.2v that mean you need a resistor that is around 75
ohm.

LEDs have a polarity.  If you plug it the wrong way, at best it doesn’t work,
at worst it’s dead… well, okay, at 4.5V, I don’t think you’ll total it but
that changes how the LEGO part works.

A small Diode fix that for the next 10-20 year or more.
Sadly i don't think you can by the original bulb any more.
 
 Author: SylvainLS View Messages Posted By SylvainLS
 Posted: Jul 9, 2025 17:51
 Subject: Re: Replacement bulb
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SylvainLS (52)

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In Help, taxan writes:
  […]
A small Diode fix that for the next 10-20 year or more.

That becomes complicated: more solder than light
… don’t they sell ready-made LED replacements for filament bulbs?


  Sadly i don't think you can by the original bulb any more.

Maybe not “the original,” but you can still find mini/micro filament bulbs.
 Author: WhiteHorseMatt View Messages Posted By WhiteHorseMatt
 Posted: Jul 10, 2025 03:45
 Subject: Re: Replacement bulb
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WhiteHorseMatt (1755)

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In Help, SylvainLS writes:
  In Help, taxan writes:


  … don’t they sell ready-made LED replacements for filament bulbs?

Yes. for model railways, tiny LED units that run natively of e.g. 12V are pretty
standard.
 Author: WildBricks View Messages Posted By WildBricks
 Posted: Jul 10, 2025 12:43
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 Author: WildBricks View Messages Posted By WildBricks
 Posted: Jul 10, 2025 12:45
 Subject: Re: Replacement bulb
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WildBricks (7924)

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  In Help, yorbrick writes:
  I don't know what the internals of this are like. It might be a good idea
to practice putting the broken bulb back in, especially if it is more complicated
than a screw in bulb.

Thanks for the picture.
If you know how to soldering you can replace it with a White LED and a series
resistor.
Most White LED are on 3-3.2v that mean you need a resistor that is around 75
ohm.

It may not be all rocket surgery, but it's all Greek to me.