Repear of Expert 1k-fa, powerdrop, currentdrop

After using my Expert SPE 1k-FA for some years, I suddenly experienced RF power drop, 
which could also be seen in the power consumption, which dropped significantly.

It worked occasionally, but then failed, which could mean that it was a mistake that 
could come and go.

However, the error was easy to find, and the picture below shows the resistance over 
which the current measurement is made, and an effective soldering at both ends of this 
resistor removed my problem.