Many thanks to all for their input on these cruise control units. My first attempt was to replace the capacitors but there was no noticeable difference from before when the cruise would lock on then drop out suddenly. After I cleaned the Conformal coating off and resoldered all joints, the CC is working normally again.

It is a good feeling to have successfully repaired mine and gathered knowledge and experience in the process.

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1972 FJ40 Toyota Land Cruiser 350TBI, NP465/205 5.38 gears, ARB Dana 60, Detroit Locker 14B, Premier Welder, 38.5 TSL/SX
2003 Dodge Quad Cab Diesel 4x4 3500 Dually- Vegetable Oil Conversion
1998 Mercedes Benz E300
1991 Mercedes Benz 350SD- Vegetable Oil Conversion
1985 Suzuki Madura GV1200
1995 Bayliner 185 Ski Boat
2005 Dutchman Colorado 32' Fifthwheel Bunkhouse