Help !! ELECTROCOMPANIET EC-1 preamp

dray177 · 15th April 2010, 06:45 PM

My new preamp, an Electrocompaniet EC-1, have one noisy phono channel.
Not hum, but cracklings...

In order to solve this problem, I would like to find schematics, diagrams, ...

Of course, I asked that to Electrocompaniet Norway, but without success.
And I am not astonished by this no reply ; all companies are doing so, except AUDIO RESEARCH !!!

Perhaps You are able to provide help ?
I hope

Raymond

My EC-1 :

HALOLS · 15th April 2010, 07:05 PM

You could ask Mr. Abrahamsen who started EC, and now runs his own company Abrahamsen Audio.
Abrahamsen Audio | H e a r i n g i s B e l i e v i n g

mjf · 15th April 2010, 09:06 PM

hello.
have you tried out the search button (on the end of this site)?
i think there are some threads about electrocompaniet preamps.........perhaps this can help.
greetings

Gordy · 15th April 2010, 11:45 PM

If you receive no circuit diagram, my guess is that the problem may be an electrolytic capacitor in the direct signal path or possibly a 'dry' solder joint.

dray177 · 16th April 2010, 07:02 AM

Halols, mjf and Gorgy, THANK to You !!

- I will try today or tomorrow to contact sir Abrahamsen but without good hopes because my English is a bit poor ( if I was Norwegian like you it will be more easier with phone to get a nice reply !! ).

- on DiyAudio, nothing appear about EC-1 ; only one other guy, like me, is trying to get schematics.

- Of course, I verified before all electrolytic C and changed all these out of specifications ( around 16 C 22µF/63v were so ! ) but no amelioration ; in addition with a magnifying glass, no dry solder found.

This is why I am searching then schematics for understanding circuitry !
Raymond

mjf · 16th April 2010, 08:49 AM

if i understand correctly it is only one channel of the phoneamp that is crackling.......
annother reason for that can be a bad contact........the source switch,can be cleaned with a contact spray or so...........
greets

tiefbassuebertr · 16th April 2010, 12:02 PM

have you checking this sources?
schematic download sites i have found
Electrocompaniet EC1 help requested
http://www.audiocircuit.com/index.php?c=ELC&m=EC-1

dray177 · 16th April 2010, 01:31 PM

Quote:

Originally Posted by tiefbassuebertr

have you checking this sources?
schematic download sites i have found
Electrocompaniet EC1 help requested
Electrocompaniet, EC-1

Thanks Andreas for your informations !!!
But alas, nothing on them abour EC-1 preamp.
Raymond

dray177 · 16th April 2010, 01:43 PM

Quote:

Originally Posted by mjf

if i understand correctly it is only one channel of the phoneamp that is crackling.......
annother reason for that can be a bad contact........the source switch,can be cleaned with a contact spray or so...........
greets

Thanks mjf for your interest.
Crackling become visible ( with oscilloscope ) in the middle of phono stage ( the right channel only ).
Then, no problem with source switch, volume & balance potentiometers.
In this case, only diagram can help me

Raymond

mjf · 16th April 2010, 02:45 PM

hello.
can you give a little pressure (with your fingertip) on the bad channel so that the pcb is a little "bent trough"............if then the crackling changes it should be a bad soldering point or hairrent or bad contact..........

15th April 2010, 06:45 PM	#1
dray177 diyAudio Member Join Date: Apr 2008	Help !! ELECTROCOMPANIET EC-1 preamp My new preamp, an Electrocompaniet EC-1, have one noisy phono channel. Not hum, but cracklings... In order to solve this problem, I would like to find schematics, diagrams, ... Of course, I asked that to Electrocompaniet Norway, but without success. And I am not astonished by this no reply ; all companies are doing so, except AUDIO RESEARCH !!! Perhaps You are able to provide help ? I hope Raymond My EC-1 :

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15th April 2010, 07:05 PM	#2
HALOLS diyAudio Member Join Date: Jun 2009	You could ask Mr. Abrahamsen who started EC, and now runs his own company Abrahamsen Audio. Abrahamsen Audio \| H e a r i n g i s B e l i e v i n g

15th April 2010, 09:06 PM	#3
mjf diyAudio Member Join Date: Jan 2009 Location: upper austria/near linz	hello. have you tried out the search button (on the end of this site)? i think there are some threads about electrocompaniet preamps.........perhaps this can help. greetings

15th April 2010, 11:45 PM	#4
Gordy diyAudio Member Join Date: Nov 2006	If you receive no circuit diagram, my guess is that the problem may be an electrolytic capacitor in the direct signal path or possibly a 'dry' solder joint.

16th April 2010, 07:02 AM	#5
dray177 diyAudio Member Join Date: Apr 2008	Halols, mjf and Gorgy, THANK to You !! - I will try today or tomorrow to contact sir Abrahamsen but without good hopes because my English is a bit poor ( if I was Norwegian like you it will be more easier with phone to get a nice reply !! ). - on DiyAudio, nothing appear about EC-1 ; only one other guy, like me, is trying to get schematics. - Of course, I verified before all electrolytic C and changed all these out of specifications ( around 16 C 22µF/63v were so ! ) but no amelioration ; in addition with a magnifying glass, no dry solder found. This is why I am searching then schematics for understanding circuitry ! Raymond

16th April 2010, 08:49 AM	#6
mjf diyAudio Member Join Date: Jan 2009 Location: upper austria/near linz	if i understand correctly it is only one channel of the phoneamp that is crackling....... annother reason for that can be a bad contact........the source switch,can be cleaned with a contact spray or so........... greets

16th April 2010, 12:02 PM	#7
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	have you checking this sources? schematic download sites i have found Electrocompaniet EC1 help requested http://www.audiocircuit.com/index.php?c=ELC&m=EC-1

16th April 2010, 02:45 PM	#10
mjf diyAudio Member Join Date: Jan 2009 Location: upper austria/near linz	hello. can you give a little pressure (with your fingertip) on the bad channel so that the pcb is a little "bent trough"............if then the crackling changes it should be a bad soldering point or hairrent or bad contact..........

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