[sdiy] Emu XL7 Keypad - Light Sensor

[foRUMS 4 punkdISCO]

Super big thanks Tom and Simon..

 

Assuming I can find the part (this seems likely) will it be very difficult
to solder Out/In?  Ive done a reasonable amount of DIY soldering but only
one big through hole stuff..

 

Ta,

 

Paul

London

www.punkdisco.co.uk

 

From: Tom Bugs [mailto:admin at bugbrand.co.uk] 
Sent: 28 January 2016 21:43
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Emu XL7 Keypad - Light Sensor

 

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-Re
flective-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 <http://www.punkdisco.co.uk> 

 






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