Re: Apple IIe and Profile (Power supply burned out?)

[Rubywand <rubywand@swbell.net>]

cjyo@my-deja.com writes ...
> 
> ...Well, I walked in to my office this morning to find that one of my
> co-workers had bought me a complete Apple II+ system for $7 at a Church
> sale.  I guess I was talking a lot about the IIe last week...
> 
> Anyway, the first thing I did was switch the II+ on to see if it
> worked.  It did, but there are thin vertical lines all across the
> screen.  I guess the video chip has gone bad.

     Actually, the II+ does not have a video chip.

     Thin vertical lines could indicate that your video output level needs to
be adjusted. (Not all Apple II's have this adjustement; but, the II+ does.)
The Video Output Level adjustment is a mini-pot (a small wheel with a slot)
located in the right rear corner of the motherboard, pretty near the Video
Out socket.

     Working between the II+ adjustment and the monitor's Brightness and
Contrast controls, you should be able to get rid of the lines. (Also, some
monitors have a Video Input Level adjustment which may need to be diddled to
get a stable, clear display.)



> 
> The next thing I did was try the II+ power supply in the IIe.  Still
> nothing (with no cards in) - just the same thick vertical bars on the
> screen.  I took another look at the IIe power supply and I think it is
> actually okay - the fuse still looks good.  I'm sure glad I didn't
> order another power supply.
>
> I think one of the chips on the IIe motherboard must be burned out.  I
> popped out a few of the chips: CPU, Video Rom, etc, then put them back
> in, but that didn't change anything.
> 
> I'm going to give up on that IIe, since I have the II+ now.  The II+
> has a 16mb RAM card (so a total of 64k, I guess).  I also put in the
> IIe's CMS SCSI card, SD-20 hard disk and also the Profile hard disk and
> controller card.
>
 ....

     The power supply clicking you mention in an earlier posting is a symptom
of an Apple II power supply which believes it is overloaded or not loaded at
all. Plugging in both hard disk controllers and drives may bring you close to
overloading the power supply. It may be a good idea to pick one controller +
hard disk set and (with all power OFF) pull the other. 



> 
> Or maybe I'll just buy a GS...I've never played around with those
> before.  But it's not as nostalgic...
> 
> Maybe I should have never picked up the IIe in the first place...?
> 
> :)
> 
     Maybe; but, now you're hooked!



Rubywand