[Swansea Hackspace] LEDs failed in my World Globe nightlight

[Ceri Clatworthy]

your photo is not great,
but I would try re-melting the solder joints (use some LEADED solder, and a
little flux, if you have it)

I an guessing the small vertical PCB is the controller ? (no photo !! )

if it is an epoxy blob then there might be no fix it solution,

If you have a DMM, set it to diode, and test the LED's

you should be able to get them to glow, to prove failure, (*don't know
capabilities of your DMM, so not conclusive fail)*

Cheers

Ceri

On Sun, Sep 3, 2017 at 4:13 PM, Richard Morgan <
richard.morgan at avocation.co.uk> wrote:

> Hi Hackspace List,
> I have a ‘Discovery Channel’ globe nightlight that was bought years ago.
>
> It rotates through a range of coloured light that illuminates from
> inside the globe. It’s now only showing RED light which is not ideal for my
> Son’s nightlight.
>
> I’ve opened it up and the problem appears to be the green(?) and blue LEDs
> are failing. Some slight illumination from a couple of the  non-red LEDs as
> it cycles through the colours and strong illumination from the reds.
>
> I’ve included some images of the PCB with the LEDs on it. I’d like to
> remove the current non-red LEDs and replace with new ones to see if this
> fixes it….but…..
>
>    - How do I know which side to solder in the long leg of the LED to the
>    PCB? There are markings on the PCB where the LEDs solder in.
>    - Should I also replace the red LEDs at the same time?
>
> How plausible is it that the non-red LEDs are failing at the same time due
> to the LEDs themselves failing? I could go through and replace the LEDs and
> find no benefit as something else is amiss.
>
> How else might I troubleshoot this problem and what else could it be?
>
> All help gratefully received,
>
> Thanks,
>
> Richard
>
>
>
> _______________________________________________
> Hackspace mailing list
> Hackspace at swansea.hackspace.org.uk
> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://swansea.hackspace.org.uk/pipermail/hackspace/attachments/20170905/238b36e4/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_8638.JPG
Type: image/jpeg
Size: 1720979 bytes
Desc: not available
URL: <http://swansea.hackspace.org.uk/pipermail/hackspace/attachments/20170905/238b36e4/attachment.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screen Shot 2017-09-03 at 15.49.13.png
Type: image/png
Size: 96824 bytes
Desc: not available
URL: <http://swansea.hackspace.org.uk/pipermail/hackspace/attachments/20170905/238b36e4/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_8635.JPG
Type: image/jpeg
Size: 1675991 bytes
Desc: not available
URL: <http://swansea.hackspace.org.uk/pipermail/hackspace/attachments/20170905/238b36e4/attachment-0001.jpe>