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LEAK S70 Repair


LEAK Stereo 70 Repair

A later and more substantial vintage transistor amplifier to the Leak 30 and Leak 30 plus. The Leak Stereo 70 has a really clean sound with more power and a better sound-stage than the earlier models.

A Typical Leak Stereo 70 repair procedure includes: Safety check; switch, potentiometer and input socket contact cleaning, fault diagnosis, replacement of all OT components and replacement of all small signal electrolytic capacitors. and smoothing capacitor and output capacitor replacement. The two fat-can smoothing capacitors are replaced with modern high quality Cornell/Dubilier capacitors. They are smaller in size but superior to the original types. To accommodate them we use a circuit board mounted over the original capacitor fixing holes on hexagonal metal pillars. 

Full performance check and adjustment followed by a  24 hour soak test and Electrical Safety Check (PAT).

Full service as described above 150.00 + UK return carriage. 

Socket Modification

If the input sockets are faulty, removing the old riveted phono banks and fitting new gold plated types mounted on FR4 board is a tedious and time consuming process. This is made worse by the tangle of resistor attenuators soldered across the pins and slide switches. We can replace them, however the full service + socket upgrade will cost around 200.00 plus return carriage.

If you want this option please phone Rob on 01905 821737 or send an email enquiries@amplabs.co.uk stating your requirements.


PAT = Portable Appliance Test

Leak S70 before service


S70 After full service (PCB retainer moved to show PCBs clearly)

We now mount the main smoothing (top centre) on a PCB  with two capacitors

LEAK Stereo 30 plus

Fulll service similar to the Stereo 70 above 150.00 + UK return carriage. 





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Last modified: Monday, 27. April 2015 12:57