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Retracting mirror motor

Posted: Mon Apr 27, 2015 9:04 pm
by TheStinkyHippy
So, my drivers side mirror was wobbly and doesn't retract.
I stripped it down, and found the motor was dead.
I ordered a replacement from the details on http://igmaynard.co.uk/bongo/forum/view ... or#p623566

That came, but found it still doesn't work.
I've narrowed it down to the switch inside the motor that stops it when it is fully open/closed.
Comparing it to the other mirror, the diodes are dead.
I get no flow through the diodes.

Now, I am stuck on what to buy..

There are 2 diodes, both the same.
They have a green band on the cathode end, and markings E 5A on them.
I'm pretty sure they are the diode on http://www.g8dhe.net/bwm/bwmanualp.htm?1995/Page_112
under the X17 and X14 switches.

I know very little about diodes.. can anyone tell me what to buy to replace them.. if maplin have them even better.
or it is these? http://www.amazon.co.uk/dp/B00HGALQLY

Re: Retracting mirror motor

Posted: Mon Apr 27, 2015 9:38 pm
by g8dhe
I would imagine that these rated at 3A and 50Volts will be fine
http://www.maplin.co.uk/p/1n5400-3a-sil ... fier-ql81c
No you don't need Schottky diodes for this!

Re: Retracting mirror motor

Posted: Tue Apr 28, 2015 8:29 pm
by TheStinkyHippy
Thanks for the reply..

Unfortunately those were much too big to fit onto the circuit board.

In the end I bought 2 of these: http://www.maplin.co.uk/p/1n5817-1a-sch ... fier-ja46a

Good news is that the mirror is back to fully working and retracting, but it is slower than the other one.

not bad though for £10 motor and £1.18 components