[comp.sys.amiga] Help, my machine is flacky...

STU00@vx.acss.umn.edu (Stuart Stanley) (10/25/89)

Hello net,

    I am having some strange probelms with my 500.  Here is the system
state and symptoms:  (Please note, the local shop hasn't a clue as to
whats going on here...)

	Amiga 500
	Inboard 1.5 (mem board that plugs into CPU socket)
	a501 512 mem expansion - Total mem = 2.5
	Kronos hard drive controler
	ST277n hard drive
	I*M power supply driving both computer and drive (the hard
		drive is direct connected to the supply, not powered
		through the bus)
	Amiga 2000 case in which all this stuff has been mounted

	Symtoms:
	    random 4 to 5 pixel long lines when I load an image
		in hires. (Shows up in some games too) -
		*note*, the effect occurs even if the image is loaded from
		the floppy, not just the hard drive.

	    If a GURU occurs, the normal words
		"Software failure   press left mouse..."
		are all kinda squished together on the left side of
		the screen . . The amount of overlap, etc varies w/
		the crash.

	    The hard drive will sometimes boot and crash repeatedly
	    	until I turn the machine of for a minute, then things
		are fine. (This may be unrelated, since it could be
	 	caused by the controler getting confused by the other
		odd things going on)

	    I had my friend at the local computer shop run the Commodore
		system test program on it and everthing checked out.
		(mem, sound, blitter, etc all seemed to work)  We ran
		it for 2 hours.

	    The problem USUALLY goes away when I take the cover off. however,
		as of last night, it did it even after I had removed the
		cover.  

	Well, I am at the nets mercy, since I have no idea what to do next.
	Any help would be, um, helpfull!  Thanks in advance,

						Stuart Stanley