Minimoog Overload light is always on/no sound

The Moog Forum Minimoog Forum
1

I had a friend using my Minimoog model d to filter some sounds she was working using the external input. When she returned it I found that the Overload light was always on and what’s worse is that my synth isn’t making any sound period…
any ideas on what this might be? Or how I might go about fixing it?

2

Lesson 1: Don’t loan out your vintage synth.
Lesson 2: Get the person who broke it to pay for repairs.
Step next: Call Kevin Lightner (or PM him on the board here) and see what his experiance says it could be.
See the bottom of this page for some other information…
http://www.moogmusic.com/service/

3

Thanks, I’ve noted the not lending bit.
Do you know what Kevin Lightner’s username is?

4

Yes, it’s “Kevin Lightner”

5

I had observed a similar behaviour with my Mini Moog D many years ago. I played with the external power sockets (for external gears such as ribbon controller or bongo etc.) in order to extract “a voltage” to drive the oscillator (actually a stupid idea…). And then the overload light went on (very bright) and no sound anymore. I thought the Mini Moog was dead. But fortunately it only blowes the fuse on the back. After I replaced it the Mini Moog was fine again - what a relief!
Maybe your problem can be solved also in such an easy way (hopefully).

6

Hi there… I know it’s quite an old thread here, but I’m facing the issue that the overload lamp remains lit, the unit is still producing sound though.
And I don’t have any external input connected!
What might be the cause?
Thanks and regards,
Flavio.

7

I remember reading many years ago about the external lamp being on all the time due to a broken PSU inside.

As usually, check the PSU first.
Better ask someone with the needed knowledge to do it for you.

8

Hallo Till,
thanks for your reply. I will either way bring it in for a service next month or so, thus I’ll ask to check this as well.

BR,
Flavio.

9

I was taught by Kevin that this means one of the fuses is out and needs to be replaced.

10

Hi ppl.
Sorry that I never replied here…
My tech had to replace an IC (small 8-legged one) and that fixed the issue…
F.