My Racal 1992 is bringing up error 52 on the Channel A relay test (Relay C,
50 Ohm/1Meg switching), and error 56 on the Channel B relay test (Relay G, x1, x10 switching).
Racal part numbers 23-7529 and 23-7528.
Can anyone help (if you have a dead 1991/1992 perhaps)?
Based in UK.