HOW-TO: Cruise Control Amp Repair 14-pin - PeachParts Mercedes-Benz Forum

brewtoo · #1 06-13-2012, 01:18 AM

Just wanted to let you know that I replaced the capacitors in several of these units. I had several I had bought from junk yards. All dead.

Now, every single one works perfectly.

BTW, I only replaced the caps - I did not re-solder the rest of the board on any of them.

One of mine had been "refurbished" according to the sticker on it. Inside, I studied the board and the parts were all original. It appears that the refurb consisted of nothing more than re-soldering all the joints. I say that because there was a good bit more solder on these joints than on any of my other boards. Also, the shellac had been stripped and a thin coat had been sprayed back on. Anyway, it too was dead. I replaced the six caps and it works great again as well.

Thanks for your help!

JamesDean · #2 06-13-2012, 01:29 AM

Quote:

Originally Posted by brewtoo

Just wanted to let you know that I replaced the capacitors in several of these units. I had several I had bought from junk yards. All dead.

Now, every single one works perfectly.

BTW, I only replaced the caps - I did not re-solder the rest of the board on any of them.

One of mine had been "refurbished" according to the sticker on it. Inside, I studied the board and the parts were all original. It appears that the refurb consisted of nothing more than re-soldering all the joints. I say that because there was a good bit more solder on these joints than on any of my other boards. Also, the shellac had been stripped and a thin coat had been sprayed back on. Anyway, it too was dead. I replaced the six caps and it works great again as well.

Thanks for your help!

Glad to be of help!

Someone shipped me in a core that had a "refurbished" sticker on it as well. It looked like someone half-stripped off the coating and re-soldered in a few spots. Didn't replace anything. I came across this same company's website and they had a price of some $300+ for that particular model!

brewtoo · #3 06-15-2012, 10:22 AM

BTW, how are you testing your units? Can they be bench-tested somehow?

JamesDean · #4 07-22-2012, 01:27 AM

Sorry I didn't see this post earlier!

Yes they can be bench tested! I've got a custom built harness that essentially is a mock-up of the in-car cruise control system. All of the components are there, I just have to provide it with power and a speed signal then test out the various functions.