[DMcMahon]

Checked out the right channel, very surprised that it had the same symptom as the left channel. i.e. good pre-amp output at C224 input but no signal at C224 output and as before by moving C224 could get good signal out.

Could not believe that had 2 faults with same symptoms of bad connections around the capacitors so looked elsewhere and found could induce exactly the same by touching other components such as the 2 Record/Play slide switches (S101 Mono Stereo & S201 Stereo). Used contact cleaner on the switches but no change.

Checked out why no VU indications. By pressing the capacitors to get good signal could monitor signal getting to both VU meters, but zero indications on the meters. Found that the 2 meters common connection was not connecting to 0V/ground as they should.

Checked the VU meters common connection back to the board OK but no sign of it connecting to 0V by measurement.

Partially removed main board to investigate further.

Soldering around the slide switches and the suspect capacitors looks OK, maybe a couple could do with resoldering.

Found the cause of the missing 0V connection back to the VU meters. There is 6mm long crack on one side of the board that has broken right through the board and has severed 3 artwork tracks including the track that provides 0V back to the meters (and other circuitry).

I will repair the 3 tracks with solder bridges strengthened with wire and will check out what other parts of the circuit these 3 broken tracks connect to.