[sdiy] Emu XL7 Keypad - Light Sensor

[Tom Bugs]

I thought 'photoreflector' but then looking at Mouser that term should 
maybe be changed to 'optical switch, reflective'
Here are some:
http://www.mouser.co.uk/Optoelectronics/Optical-Switches/Optical-Switches-Reflective-Phototransistor-Output/_/N-abusl/?No=25
 From a quick scan there may be something similar.

Worth giving Emu tech a shout to see if you can get a parts number?

On 28/01/2016 21:29, foRUMS 4 punkdISCO wrote:
>
> Hi all
>
> I have a new Emu XL7 (a complete blast!) but one of the keypads is 
> very flaky (mainly dead).
>
> It is definitely not the rubber pad or the rubber contacts.  I’ve 
> cleaned these all up and done various experiments..
>
> I think the issue is a flaky light sensor of some description..  In 
> the below picture, the square component marked U1 is some sort of 
> light sensor; you can trigger the sounds by putting your finger over 
> these.  Anyway, the faulty one I can get working by pressing it around 
> a bit but after I re-assemble, it eventually stops working again.
>
> https://farm2.staticflickr.com/1470/24047199144_8e49158937_b.jpg
>
> So my questions are:
>
> 1)What is this component?
>
> 2)Will it be easy to find a modern replacement?
>
> 3)It’s VERY small so is it going to be impossible to swap out?
>
> Big thanks for any reply’s..
>
> Paul
>
> London
>
> www.punkdisco.co.uk
>
>
>
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