emulatorII-list

Hi
First thing to do - check all the power rails are ok. Check the voltage to
every board.
Buy or find a service manual - I can sell you one as a PDF download.
Replace the floppy drives with working units - do not try and reapir them -
you don't know they work.
Leave the debug EPROM alone, use the main OS EPROM. Debug is for the
factory...
 
Most EII problems are very basic, power supply, floppy drive, internal
cables, worn out LCD, worn out buttons.
The electronics are generally reliable, voices fails due to switched
capacitor chip (dead voice) or sound muffled (SSM chip failure).
 
Regards
Rob
www.emulatorarchive.com
 
 

-----Original Message-----
From: emulatorII-list@yahoogroups.com
[mailto:emulatorII-list@yahoogroups.com] On Behalf Of Jean-Bernard Emond
Sent: 02 June 2007 18:20
To: emulatorII-list@yahoogroups.com
Subject: [emulatorII-list] Emulator II (1MB & 2 Floppy) HS



hello,

I had a emulator II broken down!

According to its last owner, it was broken down one day and it did not try
to make it 
repaired.

Now, It boot any more, it does not charge any more the diskettes at the
beginning.
I dismounted the two floppy, there were condensers to do acid leak, I
changed the 
condensers and I'll make some more tracks leak by the acid.

But no progess, ...

I download the DEBUG ROM (IP341 E2+ DEBUG 1986, CSUM 1B72 (2764)) in the
files 
section in yahoo forum.

I make own Eprom (2764) with it, i read the good checksum, I replaced the
MAIN ROM with 
the DEBUG ROM.

Always the same messages at starting like MAIN ROM.

After I connect on the serial (DB25) port in back of the Emulator II.

I dont have any message or reply / reaction from it :(

I made a cable as indicated in the service manual.

Who has an idea ?

They say that the Emulator II floppy drive (Shugart) were compatible with
the commodore 
1541 floppy drive, is this truth ?

Thank you sorry for my very bad English,

JB



 



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