Luxman Cassette Deck Repairs
The belt required changing, jrc 1021 (non standard pin out and impossible to locate source) rec op amp had +24 V on one of its o\ps,the old flux had began to track, the - i\p was low resistance to the pin next to it 0 V upsetting bias, a service manual was required for this as there were other faults. I suspect more solder pads were tracking as a general cleaning of the old flux cured the problems. Dry joints were the cause of non erase of the previous recording, an unusual one. The front panel section with the volume controls etc is driven back to reveal the controls when switched on. A gimmick I suspect to counteract flagging sales in the early 80's, made good recordings though. This may not have been available in the UK as it is a 120 V model. Luxman was bought out by Alpine in the early 80's.
The problem was no record\erase of previous recording. These use the infamous orange capacitors (polypropylene), they are also used in Nakamichi decks in the 80's. They go s\c o\c or anywhere in-between. The faulty one in this deck was in the oscillator cct, 2n7 was the value. I have found it difficult to get some values of capacitors nowadays and made one up of the correct value by paralleling 2n2+470p etc.