Fairlight-CMI

Hello again,

I'm glad to tell that my IIx is working again. Just like Joe 
mentioned this was a power problem. I said that I checked all the 
fuses. Well I checked them on the back of the mainframe. But after 
opnening the mainframe I also noticed two on the board at the back of 
the box. They were OK. And in the housing of the boards behind the 
Frontpanel are also three fuses, and one of them -12V was broken. 
After replacing it, the system booted up.

I want to thank all who did some co-thinking. Especially with these 
old machines, where a lot of technical knowledge gets lost, we can 
solve some problems by helping eachother.


Hans

--- In Fairlight-CMI@yahoogroups.com, "tama_rat" <britt@...> wrote:
>
> Hans,
> 
> --- In Fairlight-CMI@yahoogroups.com, "Hans Nijhof" <hansensandra@>
> wrote:
> >
> > Hello,
> > 
> > after connecting the communication cable from the keyboard to the 
> > mainframe, with the power on, my system doesn't start up anymore 
> > (static electricity). It only shows a green square on the monitor 
and 
> > the keypad of the music keyboard doesn't show any text at all. 
I've 
> > checked all the fuses on the back of the mainframe, they all are 
OK. 
> > Also disconneced the music keyboard and plugged the qwerty 
keyboard 
> > directly into the mainframe. Also no effect. I can here the 
diskdrives 
> > running when I put in the boot disk, but nothing changes on the 
screen 
> > or keypad.
> > Did anybody else have experience with this problem? Are there 
also 
> > fuses on the cards inside the mainframe? If not which card could 
have 
> > something to do with this problem?
> 
> Are all 3 power supply LEDs on the front panel on?  I understand 
that
> you checked the fuses, but perhaps a power supply failed without
> blowing a fuse.
> 
> Also, when you say that you hear the disk drives running, do you 
just
> hear the disk spinning, or do you actually hear the head seeking
> across the disk (the chunk-chunk-chunk sound)?  All the drives need 
to
> spin is power, but seeking requires that the CPU be running.
> 
> Joe
> 
> 
> > 
> > Thanks in advance
> > 
> > Hans
> >
>