v479 viper remote

remote stopped working. 

took it apart and saw that there are two circutboards connected twice.  one of the connections had worn solder points.  thought that I would fix it instead of spend 100 for new remote. 

remote now works, but is not receiving a signal back. the alarm and remote start work, but the remote is acting like I am out of range. 

I am looking for some info on the layout of the chip to see if I over connected some things, and or any other helpful advice. thanks in advance.

You probably still have a bad joint. 

 I've fixed MANY of those remotes, the top one has 3 legs, and the lower connector has about 6 (8?). 

If theres any of the tan glue on the connectors, use an Xacto knife blade to LIFT it off. 

Use a SMALL tipped iron, and reflow all the joints.