W123 VDO Cruise control repair series part 3: Amplifier repair

Here is the finale. Disassembling and repairing the amplifier. These cruise amps tend to fail after years of vibration and heat cycles.
In this video we take the amp out of my blue 1982 Mercedes 300D and fix it.
Find all the information including the latest document on the website: https://trythistv.com/cruise-control/


Key things in video:

0:37 Amplifier removal
2:26 Disassembly of the amp
2:57 I hulk smash it apart
3:15 What we'll be doing
4:00 Removing the varnish/coating on the circuit board to allow servicing
5:30 Clean board ready for soldering
5:52 Match capacitors to the pins on opposite side for removal (Or check the document at https://trythistv.com/cruise-control/ )
6:14 I'm using solder wick
7:00 Polarity of 22uF
7:30 Solder in new 22uF cap
8:35 Polarity of 10uF caps
8:44 Solder in new 10uF caps
9:09 Polarity of 2.2uF caps
10:15 Solder in new 2.2uF caps
10:30 Clip tails
11:05 Reflowing each and every single solder joint on the board
12:08 Test drive

Here are some links to products we used in this video on amazon in case you want to try this, purchasing from these links may earn us a small commission that helps us keep doing videos like this one:

Rosin core solder: https://amzn.to/2YdjPtw
Solder wick: https://amzn.to/2VQG86O
Portasol soldering kit: https://amzn.to/35fpMaK
Portasol individual soldering iron: https://amzn.to/3eZNgFv

Capacitors I used were ordered from Mouser, with the following part numbers:
22uF: 647-UVZ2A220MED1TD
10uF: 598-106TTA100M
2.2uF: 598-225TTA100M

Possible alternative capacitors, I have not tried these, but they are the same on paper:
22uF capacitors: https://amzn.to/2xnz48c
10uF capacitors: https://amzn.to/2Si9pVu
2.2uF capacitors: https://amzn.to/3bQCDTk