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Matsui DVD 225A microswitch needed

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daz:
Just a thought Evan, but they look very similar to the micro switches used on old floppy disk drives,
might be worth a look if you have an old PC kicking about.
regards
Daz

E Parton:
Thanks Daz ...
It can't hurt to take a look ...but from memory the floppy ones I've seen ... aren't mounted with a screw ...but soldered directly to the pcb ..
rgds

daz:
Ahhhh, your are right, well there is always glue, or pehapse you could get the springs out of them to fit yours?
good luck
daz

E Parton:
Hi Daz ...am going to give it a go ..
Drill 2 holes in the plastic plate ..and passthe nylon stubs through ...
some glue or a small bracket underside ...and the dual microswitch mounted sideways ..
a lot of work ..but if I can do it ...I'll post the result here ..
Its not about the money any more ...its about once again.. spitting in the eye of supermarket chains ..
rds
Evan

E Parton:
Ok ...using Dazs suggestion of sacrificing an old floppy drive ..
When you open one up ..you get 2x sets of micro switches ..which are at right angles to whats needed ..and pcb mounted so no screw fixing ...

So below are a series of photos showing how to do this ..
First the mount point of the original microswitch has to be cut away with a sharp craft knife ..
Next a small file used to open the hole up to the correct width ...
turning attention to the salvaged micro switch bend the ends of the 3 contacts up at right angles ..this makes it possible to solder to the tips once in place..
Fit the microswitch in the cut out you've made ...but it is not yet at the correct height so wont be activated by the whilte nylon gear ..or the disc tray ...
So ...with the tip of a fine soldering iron apply heat to the flat of each microswitch contact in turn ..to melt the plastic underneath ..and bed the switch down about 2mm ...
once level fit ...apply a tiny bit of heat to the floating side to meld the plastic of the switch to the plastic chassis ..
(shown with yellow circles)on the photo ..
The tips of the 3 microswitch contacts should be sufficiently 'proud' to connect the control wires from the original switch..
Test the switch first to make sure the plastic cam levers from the gears ..and the tray do actually close the contacts ..
Mine do ...
Tomorrow I'll refit it in the CD player ..and since these microswitches are designed for a longer life ...hopefully it wont bounce back..
rgds
Evan

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