Hi guys,
does anybody have the service manual or schematic of Electrocompaniet ECI-1?
It would be very helpful as i want to repair/restore a really old device!
Thank you in advance.
Theo
does anybody have the service manual or schematic of Electrocompaniet ECI-1?
It would be very helpful as i want to repair/restore a really old device!
Thank you in advance.
Theo
Somebody was looking here in 2004 and couldn't get one --the links then don't work right now or 404 .
The easiest way to test an amplifier without a schematic is to use a curve tracer or component analyzer and test every transistor and diode in-circuit. Use say +/- 5 volts and limit the current to a few ma. You can also use a DVM in diode mode. Any suspect devices can be removed and fully tested. Transistors will look like two diodes connected to the Base. MosFets are a bit more difficult to test.
Be sure to replace every single bad component before powering up or you could blow the output devices.
Be sure to replace every single bad component before powering up or you could blow the output devices.
Thebet I was looking at the insides of one it looks easy enough to trace with discrete components -----whats the problem ?
Went bankrupt ,changed owners in Sweden-- the USA Electrocompaniet Inc is a wholly owned US company so there will be variations in the function of the company in Europe and the USA .
As it stands many owners ( as of this date ) say its practically "unobtanium " but there must be somebody in the world who has squirreled away a schematic or knows a direct link ( no charge ) to it ?
If so DIY Audio could increase its membership by posting a link or even the schematic as large numbers of Audio enthusiasts are looking for one.
As of 2020 I have not found an owner who can obtain a schematic from the company ( discount -10/20 year old threads elsewhere ) but again ---if you know different please post to help audio enthusiasts.
As it stands many owners ( as of this date ) say its practically "unobtanium " but there must be somebody in the world who has squirreled away a schematic or knows a direct link ( no charge ) to it ?
If so DIY Audio could increase its membership by posting a link or even the schematic as large numbers of Audio enthusiasts are looking for one.
As of 2020 I have not found an owner who can obtain a schematic from the company ( discount -10/20 year old threads elsewhere ) but again ---if you know different please post to help audio enthusiasts.
Hi,
It is true, that the company had many financial problems the last few years. But they did a come-back with new investors.
Anyway, ECI-1 is one of the very first products, probably over 25-30 years old. Quite strange than no information can be achieved somewhere... it was quite successful int. amp.
Let’s see... the problem of this amp is the high frequency oscillation. I had no time up to now to search it in detail, but I will (thx to lockdown...!) after finish my ML repair/upgrade.
Theo
It is true, that the company had many financial problems the last few years. But they did a come-back with new investors.
Anyway, ECI-1 is one of the very first products, probably over 25-30 years old. Quite strange than no information can be achieved somewhere... it was quite successful int. amp.
Let’s see... the problem of this amp is the high frequency oscillation. I had no time up to now to search it in detail, but I will (thx to lockdown...!) after finish my ML repair/upgrade.
Theo
HF oscillation --- change in value of (usually ) a compensation capacitor unless somebody has been working on the circuit and changed components or the values of them ---a BAD thing to do if its a compensation capacitor as as design is modeled around that value.