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Topic: remote keyfob (Read 1637 times) |
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pedropedro
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Posts: 677
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remote keyfob
« on: Dec 31st, 2006, 3:42pm » |
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Ive wondered why the remote is so bad and the "conductive" contacts/buttons are the problem...if you measure with an ohmeter, resistance is around 1k with probes 2mm apart when good...conductive paint doesnt stay put for long...maybe folk know this already
cut x3 neat squares of kitchen foil about 4mm sq and with small drop of superglue on each button spread evenly and fit on...press down with finger..leave for 30 secs ...its a tad fiddly... BUT
range is now maybe 15m opposed to 2m
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TiberiuS
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Ex. 1996 2.3 Ultima - RIP P789 KHJ
 
Posts: 2257
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Re: remote keyfob
« Reply #1 on: Dec 31st, 2006, 5:11pm » |
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Good stuff for worn switch membranes too is self adhesive aluminium shielding tape...you can get a roll from Maplin for a couple of quid, about 20mm wide; I use it when I make audio cables, works well  .
Done a couple of typewriter keyboards with it too; keypad repair paint is great but it's £15 a jar and once you mix it you can't save any...
Happy new year 
Regards, Bruce.
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Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
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pedropedro
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Posts: 677
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Re: remote keyfob
« Reply #2 on: Jan 1st, 2007, 10:11am » |
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yes I am sure that works well too....
happy New Year John
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mr._floppy
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Posts: 100
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Re: remote keyfob
« Reply #3 on: Jan 1st, 2007, 12:01pm » |
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The downside with the foil trick is that the foil will eventually part company with the pads and cause a barrowload of trouble when operating the remote.
I've tried all types of glues with varying degress of success.
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pedropedro
Full Member
Posts: 677
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Re: remote keyfob
« Reply #4 on: Jan 1st, 2007, 12:05pm » |
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Thanks...I will keep a weekly eye on the insides.......john
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Johnboy
Junior Member
Scorpio facelift '98
Posts: 52
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Re: remote keyfob
« Reply #5 on: Jan 3rd, 2007, 4:43pm » |
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Had a look at this problem.
On the one I have. I had to stand right upto the drivers glass to make it work.
So, took it apart and was going to use the foil trick. Didn't really want to. So, had a look at the circuit board and noticed a few small black marks on the contacts.
Using some of the Mr's cotton buds on a stick thingys, wiped over the contacts on the board. Used about ten of them it was amazing how much dirt comes off these things.
Put it all back together again and hey presto! It works like new. I can open and close the scorp form the other side of the road now.
It worked for me so give it a go and let me know if it works for you.
I have even tried the fob in my pocket and like magic it works.
Good luck
John
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pedropedro
Full Member
Posts: 677
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Re: remote keyfob
« Reply #6 on: Jan 3rd, 2007, 6:35pm » |
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dont do the foil trick..as Mr floppy says it parts company as i dicovered today ! doors locking/unlocking whilst zipping along
the gold contacts get covered with the carbon from the buttons ..yes ive cleaned mine with acetone makes a big difference but if could get contact resistance down on the button would solve full stop.....will try mixing some silver conductive paint with some adhesive tomorrow
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: remote keyfob
« Reply #7 on: Jan 3rd, 2007, 6:53pm » |
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That's why I use the self adhesive stuff mate, doesn't fold over so easily and the adhesive backing sticks better. Done quite a few remotes/keypads with it now and yet to have a problem...
Cleaning the contacts won't last for long, once the moisture wears off the carbon contacts start to lose their surface again, I've tried that one more than once. If you're convinced the foil causes problems then get hold of some of the 2 part carbon keypad repair, will cost you £15 but will fix the problem.
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Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
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pedropedro
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Posts: 677
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Re: remote keyfob
« Reply #8 on: Jan 3rd, 2007, 7:18pm » |
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where can you get the 2 part carbon repair kit..cant find in maplin website..tried search but cant locate in this country at least
tks john
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harry.m1byt
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What's YaBB?
Posts: 792
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Re: remote keyfob
« Reply #9 on: Jan 3rd, 2007, 8:30pm » |
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on Jan 3rd, 2007, 7:18pm, pedropedro wrote:where can you get the 2 part carbon repair kit..cant find in maplin website..tried search but cant locate in this country at least
tks john |
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Just a thought...
Has anyone thought to try mixing up some Superglue with carbon dust then dabbing that on the buttons?
Carbon dust as in - sanded down from motor brushes or even a soft pencil.
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Daven
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I'm a cheeky Boy! (Simmos fan club)
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Re: remote keyfob
« Reply #11 on: Jan 4th, 2007, 7:59am » |
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on Jan 3rd, 2007, 8:30pm, harry.m1byt wrote:
Just a thought...
Has anyone thought to try mixing up some Superglue with carbon dust then dabbing that on the buttons?
Carbon dust as in - sanded down from motor brushes or even a soft pencil.
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Yep - tried it - it don't work! Bought a new one in the end!
Dave
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youmitegetian
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Re: remote keyfob
« Reply #12 on: Jan 7th, 2007, 5:23pm » |
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Tried cleaning my remote with contact cleaner to see if it made it better, it did't, and now the remote doesn't work at all, is there anyway to test them??
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harry.m1byt
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Re: remote keyfob
« Reply #13 on: Jan 7th, 2007, 6:03pm » |
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on Jan 7th, 2007, 5:23pm, youmitegetian wrote:| Tried cleaning my remote with contact cleaner to see if it made it better, it did't, and now the remote doesn't work at all, is there anyway to test them?? |
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A radio scanner would pick it up, but the transmission is very brief so we need some basic idea of the frequency first. I am reasonably sure it is not 432MHz - I hear my other remotes on there, but not the Scorps remote.
That would be the easy way to at least proove they are transmitting.
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pedropedro
Full Member
Posts: 677
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Re: remote keyfob
« Reply #14 on: Jan 8th, 2007, 11:39am » |
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testing of the buttons is relatively easy...you will need a multi meter
put probes across a button with approx 3mm ( not critcal but useful to have a reference distance as resistance will vary with a change of distance between probes tips )
should expect to see max 500R (ohms) .5K
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pedropedro
Full Member
Posts: 677
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Re: remote keyfob
« Reply #15 on: Jan 8th, 2007, 4:08pm » |
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Bruce
if you read this thanks for advice re keyboard repair paint
cleaned buttons with acetone so all old carbon removed , put thin film of the mixed paint on each button ......now resistance is down to zero across the button perfect...seems flexible and yet tough
thanks for advice
John
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