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-   -   Legendary Problem Solved.... (https://www.corvetteforum.com/forums/c5-tech/2208518-legendary-problem-solved.html)

00Corvette 03-09-2009 09:29 PM

NM, LOL.. I'll just try the glue and if it don't work, I'll take a deep breath and try the solder method...

Donnie

Bill Curlee 03-09-2009 09:50 PM

NO GLUE!!!!!!!!!!!!!!!!!!!!!!!:willy::ack: Glue is NON Conductive. That would most likely cause it to get WORSE!:thumbs:

dgrant3830 03-09-2009 10:48 PM

I tried soldering those contacts long ago when I still had my '99. It didn't work for me. Reading this thread today, I pulled out the old fobs and looked them over closely with a scope. They were and are still making the proper electrical connections and they were still bad.

doje 03-09-2009 11:14 PM

OK, someone who has successfully done this want to give me a price to do my old one for me? :lurk:

00Corvette 03-10-2009 12:01 AM

Bill,

Thanks for the heads up! I'll just see if I can get the tip of my iron on there...

DZ

KRISCO 03-10-2009 12:05 AM

nice post. Thanks

Silverbullet00 03-10-2009 12:06 AM

I have an advantage! Fasthotrod is close by! Oh Mark, another request for help!:D

Billy52 03-15-2009 08:51 AM


Originally Posted by dgrant3830 (Post 1569235508)
I tried soldering those contacts long ago when I still had my '99. It didn't work for me. Reading this thread today, I pulled out the old fobs and looked them over closely with a scope. They were and are still making the proper electrical connections and they were still bad.

Several things are possible here.

(1) You may have what's known in the electronics world as a "cold" solder joint. It may appear to be good visually but the microcircuit lead may not have been cleaned properly before soldering, resulting in a solder connection that went bad over time.

(2) You microcircuit may be bad. Only fix would be to solder in a new microcircuit...

(3) You may have a "cold" solder joint somewhere else other than the six points indicated in the post above.

(4) Gremlins - Those things are almost impossible to find.

Good luck.

I have a FOB that exhibits this problem. I'm going to go check it now.

theworm 03-15-2009 11:49 AM

Was about to buy a new fob and I saw this post. After sync, it would work for about 10 minutes and then stop--every time. Makes sense. With a magnafying glass, I could see the contacts broken. Was probably done during battery replacement. Has been working now for an hour. Thanks for the info.

Red3644 03-17-2009 12:31 PM

This worked great! Fobs were always losing sync. I assumed bad batteries but that didn't work either. Checked the solder joints and they "looked" good but...a quick hit with the solder and gun and they're working well for 2 weeks now. Thanks.

Fasthotrod 03-17-2009 03:42 PM


Originally Posted by Silverbullet00 (Post 1569236511)
I have an advantage! Fasthotrod is close by! Oh Mark, another request for help!:D

You got it, bud. Bring it to our next GTG and I'll take it home and solder it for you. :thumbs:

Mark

doje 03-17-2009 09:47 PM


Originally Posted by doje (Post 1569235904)
OK, someone who has successfully done this want to give me a price to do my old one for me? :lurk:

:lurk::D

tstar 03-18-2009 12:43 AM


Originally Posted by doje (Post 1569340557)
:lurk::D

PM me. I got a new soldering staton with a flow gun and want to try it out.

Jon B. 03-18-2009 04:30 PM

I'm gonna try this tonight. I've got another question though, something on my circuit board sounds like it has something rolling around inside. Does the little silver cylinder have a ball in it?

Corvette Don 03-18-2009 04:47 PM

Man, wish I knew about this a few months ago, I threw out 2 2000 fobs due to them not working :(, my current one works when it wants to so maybe I need to do this to mine

doje 03-18-2009 11:14 PM


Originally Posted by Jon B. (Post 1569349526)
I'm gonna try this tonight. I've got another question though, something on my circuit board sounds like it has something rolling around inside. Does the little silver cylinder have a ball in it?

Yup, that's for the passive entry feature. When the ball rolls around it sends out an unlock signal. :thumbs:

Jon B. 03-19-2009 03:53 PM


Originally Posted by doje (Post 1569355308)
Yup, that's for the passive entry feature. When the ball rolls around it sends out an unlock signal. :thumbs:

Cool, learn something new every day.

poolboy 04-09-2009 09:06 AM

So, for those of you that have done this, has it worked?

gpracer1 04-09-2009 11:56 AM

Sometimes you can fix it , sometimes the fob is just bad even after fixing it. I did the same to the 2000 I had a few years ago and it worked for a while, then the fob just died.

n5554t 04-27-2009 07:45 PM

Thank You, Thank You, Thank You!
 

Originally Posted by Fasthotrod (Post 1568259007)
That would make sense... I just took mine apart and studied the circuit. It appears that one of the battery (+) legs goes up to the two legs on that chip, through the chip, then down to two pins on the main chip.

Maybe that is a memory feature of some kind? I think the FOB's have a rolling code, so maybe this is what keeps track of the codes as it rolls over?!?!

I just took my FOB down to the lab and hit those points with some solder. If it works, I'll report back.

Thanks for the tip. :thumbs:

Mark

Thank you, I have gone a few months without the FOB working....was going to replace the entire system UNTIL I read this. I repaired the broken "legs" and the FOB now works. Thank You, Thank You


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