Helpo with a RF remote ...

Thread Starter

slklite

Joined Aug 5, 2014
2
Hello guys, I'm having trouble with a remote control for a car remote access.

I bought a complete module with 2 remotes.

They keys fobs are like VW cars, and I want to install this on a ford remote fob.

Because obviously, it's not plug and play, I had to grind the circuit to adapt it in the ford key fob.

Now that I finished, I replaced some of the circuit lines with small cables ...

The problem I'm facing now, is that it works only when I touch the RF chip with fingers. If I don't touch it, nothing, it's like no signal comes out of the remote ...

Here are some pics.

Original remote circuit





Grinded circuit





Original remote



New remote



Do you have any suggestions ?

Thank you for your help.

Best regards.
 

alfacliff

Joined Dec 13, 2013
2,458
some of the printed runs on those remotes are antennas, inductors, and such.. I have never had any sucess with using wire after the board is damaged.
 

MikeML

Joined Oct 2, 2009
5,444
You have detuned (pulled the frequency of) the extremely simplistic transmitter (or reciever) by hacking it. It takes some hand capacitance (to your body) to tune one to the same frequency as the other. Very common problem with garage door remotes, too...

A is not talking to B
 

Thread Starter

slklite

Joined Aug 5, 2014
2
All right, thanks for the answer.

Is there a way to fix it ? All the buttons work as they should, but I have to touch the chrome part next to the battery for it to work ...
 
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