Above set dead apart from seven blink of red std-by lamp.
Checking the manual suggests that the Inverter for the various supplies on the SC board is unhappy.
Disconnecting both buffers from the SC completely, and set runs.
Reconnected bottom-buffer only, back to SOS-7
Disconnected bottom buffer re-connected top buffer, set runs with half a picture proving bottom buffer bad.
--A short was found in one of the chips of the bottom buffer.
Checking the manual suggests that the Inverter for the various supplies on the SC board is unhappy.
Disconnecting both buffers from the SC completely, and set runs.
Reconnected bottom-buffer only, back to SOS-7
Disconnected bottom buffer re-connected top buffer, set runs with half a picture proving bottom buffer bad.
--A short was found in one of the chips of the bottom buffer.