Emax

Hello fellow EMAX users,



I recently acquired an EMAX Rack. As it seems the unit was stored in a
damp environment for quite some time.

It boots up until the "Please Insert Disk" message appears and
the following LEDs are lit:

Master, Transponse and Enter.

The Floppy drive did not take any disks, so a HXC-emulator was hooked
up.

It is possible to load floppy images with the HXC.

There is no sound, the only thing that is heard is a click sound if
notes are sent via midi.

The following measures were taken so far with measures against static
discharge:

-       PCB cleaning.

-       Reseating of all socketed ICs on the digital board, except for
the E-Chip because it was not possible to get it out of the socket.

-       Results of The Internal tests: Bank RAM test passed, ERAM test
failed.

Message:

is80sb01 bk0ic??

ad000000 galpat

-      If I remove any of the RAM chips the message stays the same.



To make a long story short: What can I do to bring the unit back to
life?

As for test equipment I am in possession of a scope and a logic
analyzer.

I don't know exactly where to start to look for errors.






[Non-text portions of this message have been removed]