It could be a bunch of different problems, maybe even some that your
buddy has created. Based on his troubleshooting step selection and
lack of preventive measures when turning the thing on for the first
time, my advice is for him to take it to someone that understands
how it works and how to fix it before he breaks it for good. Don't
turn it on again because you could really really damage it.
Sorry if the first paragraph sounds harsh, but it's the honest to
god truth.
Here's my solution and don't attempt this if you don't understand
what you're doing please! This isn't exactly a great toy to learn
about electricity on.
If I just got a fresh EII from ebay or wherever:
1.)I would make sure that the previous owner did not turn it on or
test it for me. This is important becuase if the electrolytics fail
upon power up, you could blow the whole thing up.
2.)Upon the arrival of the EII I would take it apart and check it
for damage internally and that all connections are properly seated.
3.)I would remove all of the jumpers from the power supply and test
the rails for noise and tolerance. Then, if everything passed, I
would test it with a load. Well, actually, I would probably rebuild
the entire supply first regardless with New lytics and F.R.E.D's.
The whole thing is pretty old and fragile.
4.)I would also make sure that none of the chips wiggled their way
out of the sockets. Basically, every chip would get a strong push
from my thumb to make sure it was properly seated.
5.)Look for spots on the tantalum or signs of failure and replace.
Actually, you should probably replace all of it. There aren't that
many in there if I remember correctly.
6.)Make sure all connections are properly seated and there aren't
any broken solder joints on the pcb connectors.
7.)If you get to step 7 and the thing doesn't work, you need all
sorts of test equipment and you should probably take it to a tech.
-Mike
--- In emulatorII-list@yahoogroups.com, "Heiko Mehring"
<Mehrings@...> wrote:
>
> Hello emulators,
>
> a guy in another german "keyboards-forum" has bought an damaged
EII.
> After he switch the maschine on, just a few lights (from both
drives,
> Tune, Transpose, Define, VCA/LFO & Special) went on till he switch
it
> of again and nothing is seen on the display. He said, that he has
> checked all connectors inside and has changed the drives on the
bus
> (also just trying to boot with one drive). Has someone of you an
idea,
> what should be the problem with his maschine? It would be cool, if
we
> can get this nice EII back to life, or?
>
> Thanx in advance
> Heiko
>