Preamp

Linn LK-1 preamp and LK-2 power amp full service

Customer said their LK-1 “wasn’t behaving right” (pops/clicks between channels) so asked me to take a look. Several faults found (including some not noticed/mentioned by customer) on preamp board, including dead BC212L transistor shorted in the MC input (LH channel dead/buzzing), a faulty analogue switch IC DG309CJ causing popping switching to/from tuner input amongst other

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Another Linn Kairn battery leak

I didn’t get such a good vibe when seeing the corrosion presented around the externals: And naturally the insides didn’t look too optimistic… (but this hasn’t been enough to decline repair in the past) However despite being one of the worst examples (with corroded broken tracks under the 10 way IDC socket too!), neutralised all

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Quad 34 one channel not working

Turns out to be plastic failure in the RV4 balance fader. An ALPS part no longer made so repaired it instead… A juggling act to remove as it is levered remotely from front panel: Can see the break in the lower side and the contacts are no longer pressing against the track Nothing a good

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Another Linn Kairn battery leak repair

Another dead kairn and seeing the signs already (gulp): Yep we have sparklies! But not the worst I’ve seen. it just travels everywhere mainly along the negative current paths. Typically happens when battery is flat (not been plugged in for a long time) Cleaned up with water, neutralised with citric acid, and repair any traces

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Linn Kairn ‘no power’

This Linn Kairn with MM/MC came in dead, apparently “was working fine and went off”. Fuse blown so took a look at the power supply (‘Slimline’ switching version) and found a number of dead parts, including both mosfets shorted, controller and a few resistors: I wanted to check the other component values against the PSU

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