Schematics or Service Manual EA-1

[gaztech]

Hi guys,

Does a schematic or service manual exist for the Electribe EA-1?

I have one in for repair with no sound. I traced right up to the DAC and there is nothing there. I'm going to have to go deeper.

Without a schematic at least it going to be difficult!

Anyone have anything?

[gaztech]

So... Now I have output just after the DAC.

I found badly soldered resistor. Could only see it through a large magnifier. I have both channels so progress has been made!

Now I have very low output on the output section. All outputs are low but I do have some signal at the volume control and onwards. I suspect that the wrong power supply was used on this one.

If I could JUST get a schematic of the output section then that would enable me to finish this one off. Without the schematic (and it's NOT the same as the other units) I'm having a hell of a time getting this one done.

Anyone have anything at all?

[gaztech]

So... Now I have output just after the DAC. I have both channels so progress has been made!

Now I have very low output on the output section. All outputs are low but I do have some signal at the volume control and onwards.

If I could JUST get a schematic of the output section then that would enable me to finish this one off. Without the schematic (and it's NOT the same as the other units) I'm having a hell of a time getting this one done.

Anyone have anything at all? Oh, and it's not the mutes. Even with them taken out it doesn't work.

[otzcz]

So... Now I have output just after the DAC. I have both channels so progress has been made!

Now I have very low output on the output section. All outputs are low but I do have some signal at the volume control and onwards.

If I could JUST get a schematic of the output section then that would enable me to finish this one off. Without the schematic (and it's NOT the same as the other units) I'm having a hell of a time getting this one done.

Anyone have anything at all? Oh, and it's not the mutes. Even with them taken out it doesn't work.

Hi, I also tried to find some original technical info for ER-1, but with little success. It looks like they hide it well

Maybe this could help a bit, or there's link to service manual for EM-1 in the description: https://www.youtube.com/watch?v=h0OfLD_NHDU

[gaztech]

Hi guys,

I forgot to add... This one is an ER-1 MK II version.

I actually managed to find an ER-1 service manual from one of the paid sites and bought it since I couldn't find it anywhere else but I find that the earlier version is very different so this manual is no good for this one.

It's the MkII version manual that I need. This one seems to be unobtainium. I can't find it anywhere.

However, the board that I have the issue with may be used in something else. That's very possible.

Board number is: KLM 2475

If anyone has a schematic for just this board then it would help enormously. I changed some chips out as the signal looked like it was dying after them but that didn't work (these surface mount boards are very difficult to trace out) - but I did manage to advance the signal a little further so a bit more progress!

If I had the MK II service manual I might be in with a chance to fix this thing.

As an aside... If someone wants the ER-1 manual I have then I can send it on if you need it. Just PM me... I checked all the other Electribe variants (EM-1 etc etc) but ALL of them are different to this one. None of them have the KLM 2475 board.

Still hoping someone will come up with something.