hifi engine

wires came loose sansui 5000x

Help please, I have a beautiful Sansui 5000x receiver. The inside treble and bass controls were frozen but other than that it worked good. I cleaned the pots by removing the bottom circuit board, I was able to flip it around to get better access to the pots, any way 2 wire separated that are attached to the back of the board.
The repair manual posted here shows a different setup? Mine has 4 soldered blue wires closely spliced into two blue wires one having a gray jacket on it, the other ends broke off I think from the next larger board ? Looking at the board from the bottom they are near the back edge on the right. I have about zero electronics knowledge but a think I could do a solder jog if I could find a good picture of where these buggers attach.