Thread: Cyrus 1 amp.
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Old March 26th 11, 10:50 AM posted to uk.rec.audio
Dave Plowman (News)
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Default Cyrus 1 amp.

In article ,
Mike Coatham wrote:
On 26/03/2011 12:01 p.m., Dave Plowman (News) wrote:
In ,
Mike wrote:
If you want a copy of the service manual, let me know& I'll email you a
copy.


Thanks Mike. I've found the schematics online and have taken it apart
ok. One channel appears to be distorting ever so slightly - after
cleaning the selector switch which cured the intermittent on one
channel. The 'faulty' amp is reading a DC offset of 0.04V - the other
zero. Haven't looked on the scope yet. There doesn't appear to be any
presets for standing current - so would the manual help? If so I'd be
grateful.

Email address in the sig.

Manual sent - the quiescent current trimpots are RV2/3 and are 'hidden'
under that flat ribbon cable - hence hard to see.


Great - I found them after removing the ribbon this morning. I've been
repairing the fixings for the front panel - two of the three at the bottom
were broken, stopping the switch mechanism working.


But the manual hasn't arrived - you did notice the spam trap in the
address?
'davenoise' won't bounce - but I haven't set up any access to that box.
Only 'davesound'.

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Dave Plowman London SW
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