Hi Rob,
I also check all power on every board and Floppy drive...
All power are ok !
I think my problem come from Floppy drive...
Regards,
JB
Le 3 juin 07 à 23:21, rob a écrit :
> 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
>
> [Non-text portions of this message have been removed]
>
>
>