Question about Monotron
 

Hi. I have a monotron classic, which I left batteries in , and they leaked.
Now the monotron wont make any sound anymore..basically a dimmed out LED flashes in the LFO knob, but nothing else works on it. Almost Seems like it is running on low batteries..but they are a new pair.
I really do enjoy and Love all My synths, and its quite a pity that I lost this one. Unless it can be fixed. I did clean the compartment quite well, with lemon juice, but still didn't work.. any ideas ? can it be fixed ? Thanks :D