Fuse Blowing - Linn LK85 Service Manual

nd
2 June 1999
Doesn't power up Intermittent -
or tapping or bumping
Powers up the unit makes fault
(power LED may come & go
be lit) but no
function.
Unit dies At any time
intermittently
Unit does not May be intermittent
power up or
powers up & then
dies
May die
intermittently or
briefly and then
come back on
again.
Unit does not May be intermittent
power up or
powers up & then
dies
May die
intermittently or
briefly and then
come back on
again.

Fuse blowing

Symptom Circumstances
Fuse blowing May be intermittent
Fuse blowing May be intermittent
Page5
Contents
Bad connection either inside
or outside the unit.
Mains voltage dropping too
low for unit to function
correctly (known as 'Brown
outs' as these voltage drops
also sometimes cause the
lights to dim.)
Mains inlet faulty
Transformer faulty
Possible Cause(s)
Wrong type of fuse fitted
Mains surges
Copyright © 1999 Linn Products Limited. All rights reserved.
Find and eradicate bad
connection. It may be something
as simple as a connector not
pushed fully home and may be
easily visible. If fault is
intermittent, see Introduction to
Fault Finding section (paragraph
on intermittent faults - accessible
via Linfo Website - Product
Information). If fault is not
intermittent, it may be possible to
trace the fault – again see
Introduction to Fault Finding –
Substitution & Isolation
Consult an electrician or your
power company.
Replace mains inlet – Linn part
no: CONN 385
Replace transformer – Linn part
nos:
LK85
230V - MCAS 030/230
115V - MCAS 030/115
100V - MCAS 030/100
LK140
230V - MCAS 033/230
115V - MCAS 033/115
100V - MCAS 033/100
Cure
Replace fuse(s) with correct
value & type.
Fuse in mains lead should be 5A.
Fuse in the mains inlet of the amp
should be "Slow Blow" – look for
a 'T' before the rating on the fuse.
Correct types are:
100 - 115V - 6.3A
220 - 240V - 3.15A
Consult an electrician or your
power company.