Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: Martin_1962 on 12 December 2007, 19:44:55

Title: Key fob switches
Post by: Martin_1962 on 12 December 2007, 19:44:55
One of my key fobs has 3 knackered switches

Little rubber ones, they do not make contact.

ANy idea how easy to replace or where I can get them from
Title: Re: Key fob switches
Post by: Martin_1962 on 12 December 2007, 22:10:41
Megamos
Title: Re: Key fob switches
Post by: HI2DVY on 12 December 2007, 23:55:26
I have tried replacing mine and found it next to impossible. They are surface mount type and the contact area with the circuit board is minute. You need a very fine point temperature soldering iron and a magnifying glass... oh, and three hands. :-/
Title: Re: Key fob switches
Post by: shyboy on 13 December 2007, 13:46:45
I did a post entitled 'simple repair for key fob' about 6 weeks ago. Basically, I packed the space behind the battery with card to press the contacts back into position and it works well, but I've since done one with more 'springy' thin packaging plastic to equally good effect. No problems with either, and the 'repair' was free.
I shied away from attempting a soldered repair. Ask Loo-Knee. I think he ruined a fob trying it with unsuitable equipment.
Cheers,
Bill.
Title: Re: Key fob switches
Post by: TheBoy on 16 December 2007, 14:57:58
get a replacement fob from ebay and get it programmed if it cannot be soldered...
Title: Re: Key fob switches
Post by: Martin_1962 on 16 December 2007, 17:14:46
My switches didn't work when pressed out of the fob.

Will attempt new switches I think
Title: Re: Key fob switches
Post by: Marks DTM Calib on 16 December 2007, 19:04:20
I think RS do them.......although they are through hole ones the legs can be bent so they are the same as the surface mount types.
Title: Re: Key fob switches
Post by: Martin_1962 on 17 December 2007, 10:14:02
We have a new Maplins - so I may have a look there.

Anything to save a few quid at the moment
Title: Re: Key fob switches
Post by: Kevin Wood on 17 December 2007, 10:28:28
Shame yours is a Megamos. I have a Delphi one bought in error that you'd have been welcome to.

These might do it, although I've not measured them up : http://www.maplin.co.uk/module.aspx?ModuleNo=4196&doy=17m12

Kevin
Title: Re: Key fob switches
Post by: Marks DTM Calib on 17 December 2007, 10:50:25
The facelift ones are more like this.....

http://www.rapidonline.com/productinfo.aspx?kw=78-1120&tier1=Electronic+Components&tier2=Switches&tier3=Tactile+Switches&tier4=Miniature+rectangular+tactile+switch&moduleno=36679

Title: Re: Key fob switches
Post by: Martin_1962 on 17 December 2007, 11:36:31
Quote
Shame yours is a Megamos. I have a Delphi one bought in error that you'd have been welcome to.

These might do it, although I've not measured them up : http://www.maplin.co.uk/module.aspx?ModuleNo=4196&doy=17m12

Kevin

Thanks for the offer!!
Title: Re: Key fob switches
Post by: Martin_1962 on 17 December 2007, 11:37:35
Quote
The facelift ones are more like this.....

http://www.rapidonline.com/productinfo.aspx?kw=78-1120&tier1=Electronic+Components&tier2=Switches&tier3=Tactile+Switches&tier4=Miniature+rectangular+tactile+switch&moduleno=36679



That is similar - I'll check Maplins for something like it, all three switches are knacked but  if you short them the remote works!
Title: Re: Key fob switches
Post by: Andy B on 17 December 2007, 18:36:56
Quote
The facelift ones are more like this.....

http://www.rapidonline.com/productinfo.aspx?kw=78-1120&tier1=Electronic+Components&tier2=Switches&tier3=Tactile+Switches&tier4=Miniature+rectangular+tactile+switch&moduleno=36679


7 pence?!?!  :o How do you manage to make anything for 7 pence? They must have to chuck 'em out by the millions (probably made in the Peoples Republic of China which will help) to make it that cheap!
Title: Re: Key fob switches
Post by: Marks DTM Calib on 18 December 2007, 14:12:34
Quote
Quote
The facelift ones are more like this.....

http://www.rapidonline.com/productinfo.aspx?kw=78-1120&tier1=Electronic+Components&tier2=Switches&tier3=Tactile+Switches&tier4=Miniature+rectangular+tactile+switch&moduleno=36679


7 pence?!?!  :o How do you manage to make anything for 7 pence? They must have to chuck 'em out by the millions (probably made in the Peoples Republic of China which will help) to make it that cheap!

Thats expensive....we pay 1.6p for them and 0.09p for a resistor.....trouble is all teh manufacturing is outsourced now so I cant get hold of any!

It will be a fully automated production line somewhere (hence labout costs have little impact) knocking out 1 a second....
Title: Re: Key fob switches
Post by: Andy B on 18 December 2007, 17:25:17
Quote
....
It will be a fully automated production line somewhere (hence labout costs have little impact) knocking out 1 a second....

LOL The best I ccan do is make a machine label cans of beanz/spag/etc at 800 cans per minute!  ;D
Title: Re: Key fob switches
Post by: Marks DTM Calib on 18 December 2007, 17:38:51
Lol....out latest pick and place machines fit 5 components a second......and they can be big components.

Each item is collected from a tape and reel or waffle tray, inspected by a camera for orientation etc and then placed exactly where required......ut can even test the component value but this slows the process down.......so it does that lot 5 times a second.....very good to watch.
Title: Re: Key fob switches
Post by: TheBoy on 18 December 2007, 18:41:16
Quote
Lol....out latest pick and place machines fit 5 components a second......and they can be big components.

Each item is collected from a tape and reel or waffle tray, inspected by a camera for orientation etc and then placed exactly where required......ut can even test the component value but this slows the process down.......so it does that lot 5 times a second.....very good to watch.
Yes, not seen a modern pick and place in action. Last pick and place I saw took3 or 4s per component.  5 per sec must look impressive :y
Title: Re: Key fob switches
Post by: Kevin Wood on 18 December 2007, 20:48:23
Back when we used to have mobile phone manufacturing in the UK I used to visit the factories occasionally. It's truly incredible what can be achieved by these machines. Only thing that let them down were the few human steps involved in the line :-X

Kevin
Title: Re: Key fob switches
Post by: Martin_1962 on 18 December 2007, 22:19:31
'dangle berries' >:(

Locking switch on the other fob is now getting stiff - time to fix the old one ASAP >:(
Title: Re: Key fob switches
Post by: Martin_1962 on 19 December 2007, 19:43:38
UPDATE

Got the inside out, managed to dismantle and clean the inside of the two door switches, (boot worked)

I have a working keyfob
Title: Re: Key fob switches
Post by: Martin_1962 on 20 December 2007, 09:58:20
Damn unlock doesn't work this morning.

Anyone have some faulty ones I can cannibalise?
Title: Re: Key fob switches
Post by: TheBoy on 20 December 2007, 20:00:58
The one on the tractor packed up.  So I just programmed a spare to it ::)
Title: Re: Key fob switches
Post by: Martin_1962 on 20 December 2007, 22:54:20
Quote
The one on the tractor packed up.  So I just programmed a spare to it ::)


Got any dodgy facelift ones?

Are the switches the same on prefacelift?
Title: Re: Key fob switches
Post by: TheBoy on 21 December 2007, 09:01:03
Quote
Quote
The one on the tractor packed up.  So I just programmed a spare to it ::)


Got any dodgy facelift ones?

Are the switches the same on prefacelift?
I dont have any 3 button ones.  Need to get some.
Title: Re: Key fob switches
Post by: Mr.Slippy on 21 December 2007, 10:31:54
replacing my battery the other the, managed to break the battery housing off.

Need to find a super fine soldering iron to reattach the contacts to the circuit board? Anyone done this??

Andrew
Title: Re: Key fob switches
Post by: TheBoy on 21 December 2007, 23:00:49
Quote
replacing my battery the other the, managed to break the battery housing off.

Need to find a super fine soldering iron to reattach the contacts to the circuit board? Anyone done this??

Andrew
I need to do the one I broke last week, which hopefully I'll do tomorrow.  Looks easy enough.
Title: Re: Key fob switches
Post by: Marks DTM Calib on 22 December 2007, 10:19:31
Post it to me and I will re-solder it for free and return......
Title: Re: Key fob switches
Post by: Martin_1962 on 24 December 2007, 13:34:29
ALl working fine!