Assembled K4004B with K4006 and 22518. No sound whatsoever.
At the power pins a measure 25V. At the LS right I measure 0.31V and left 0V. When I disconnect power LD1 brightness dampens much faster than LD2.
Most likely I have made a mistake (my skill level is -11) when connecting power supply to the amplifier. Of the six pins of K4006 I used right pin of - and gnd and left pin of +. I measured 31V at the amplifier then.
Do I have a total loss here?