LK2 Service Manual
Page10 Copyright © 2000 Linn Products Limited. All rights reserved.
Contents Paul O'Neill
Power-up problems – Fault Table
Won’t power up
Symptom Circumstances Possible Cause(s) Cure
Won’t power up.
Power LED dead
& no function –
both channels
Constant Fuse blown in unit and/or in
mains plug.
Replace fuse(s) with correct
value & type.
Fuse in mains lead should be 5A.
Fuse in LK2 should be “Slow
Blow” – look for a ‘T’ before the
rating on the fuse. Correct types
are:
100-115V - T3.15A antisurge
220-240V - T6.3A antisurge
Won’t power up.
Power LED dead
& no function –
both channels
May be intermittent Mains lead faulty Replace faulty mains lead.
Won’t power up.
Power LED dead
& no function –
both channels
May be intermittent Power switch faulty Replace power switch – use Linn
part no: SWRL 006
Unit dies
intermittently &
stops working for
a while – possible
distortion or
reduction in
sound quality -
both channels
At any time Mains voltage dropping too
low for LK2 to function
correctly (known as ‘Brown
outs’ as these voltage drops
also sometimes cause the
house lights to dim.)
Consult an electrician or your
electricity supply company.
Doesn’t power up
or
Powers up
(display LED lit)
but no function.
or
Possible
distortion / poor
sound quality –
both channels
May be intermittent Wrong mains voltage for LK2
type – mains voltage is too
low. (e.g. 240V unit being
used with 115V mains
supply.)
Check voltage rating on
underside of LK2. If wrong,
transformer will require
replacement. Correct part
numbers are:
MCAS 001/100 for 100V mains
MCAS 001/115 for 115V mains
MCAS 001/220 for 220V mains
MCAS 001/240 for 240V mains
Our stock of these transformers is
very limited, so it may not be
possible to supply the part you
require.
One channel
dead
May be intermittent Transformer cable not
connected to board; may be
broken or may have a bad
connection
Reconnect cable or repair if
broken.
One channel
dead
May be intermittent Channel has “tripped” See Trip Faults section below
One channel
dead
May be intermittent Board is faulty See Amplifier Faults section
below
Won’t switch off
Amp will not
switch off using
power switch
May be intermittent Faulty power switch Replace power switch – use Linn
part no: SWRL 006
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