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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

1495.0. "Amiga A500 power up probs" by HAGGIS::MALKY () Wed Jun 22 1988 15:49

    Hello ..
    		I have a friend who is having a problem with his Amiga
    	A500. At power up the red Led flashes 11 times stops for a few
    	seconds and then starts flashing 11 times again...etc....
    	
    		The green LED never comes on and there is no picture
    	Can anybody out ther help me please????
    
    		I take it the flashing LED is an error code of some
        sort ?,does anyone know what they mean? I would be thankful
    	for any info what-so-ever.
    
    		Thanks for reading this....
T.RTitleUserPersonal
Name
DateLines
1495.1color of screenANGORA::JANZENTom 2965421 LMO2/O23Wed Jun 22 1988 16:072
    the error code is in the screen color.  tell us the screen color.
    Tom
1495.2SCREEN COLORHAGGIS::MALKYMon Jun 27 1988 17:076
    Dear Mike,
    		Thanks for your reply,the screen color is cyan.
    
    
    			Many thanks.
    				   Malcolm.
1495.3ANGORA::JANZENTom 2965421 LMO2/O23Mon Jun 27 1988 18:193
    if by cyan you mean a greenish color, green at  bootup denotes a
    chip ram problem, according to an old memo from usenet.
    Tom
1495.4I SEE NO CYAN!!!HAGGIS::MALKYTue Jun 28 1988 13:227
    Mike,
    	Sorry to mess you about ,the actual screen color is a shade
    is mauve.....I cant quite see why my friend thought cyan was a purple
    ? ,but anyway
    
    			Thanks again.
    				   Malcolm
1495.5amiga colors from network usenetCOUGAR::JANZENTom 2965421 LMO2/O23Tue Jun 28 1988 13:3822
+ From: daveh@cbmvax.UUCP (Dave Haynie)
+ Subject: Re: Screen changes to green during reboot
+ Date: 16 Jul 87 16:09:37 GMT
+ Organization: Commodore Technology, West Chester, PA
+ 
+ Actually, green is meaningful in the right context.  On initial powerup, the
+ first meaningful color displayed is dark grey, which indicates the system 
+ has passed the "hardware test".  The 68000 is running, and some hardware
+ registers are seen.  Next is the light grey screen, the "software test",
+ where the system software is starting to come up.  Finally, the "white"
+ screen comes up indicating that the machine is just about ready to ask for
+ a disk; everything has checked out OK.  
+ 
+ Failures come up as colors.  

	GREEN indicates a CHIP RAM failure of some kind.
	RED indicates a ROM/WCS failure.  
	BLUE indicates a custom chip failure.
	YELLOW indicates that a 68000 exception trap has occurred before the
+ normal OS trap handler (the GURU code) has been installed.  When a failure
+ is detected, the OS will often retry, so you can see cycling from failure to
+ test, at least for the right kind of failures.
1495.6Reseating chips works for me.FROBUS::MOORETom Moore MRO1-3/SL1 297-5224Tue Jul 19 1988 21:4110
	I also have had problems with my A500. Each time pushing
	down on all of the chips has fixed it.  I get the green
	screen and the red light flashes.  The shop removed and
	reseated all of the chips the first time.  I tried to remove
	some of the chips to reseat them and decided there was too
	much risk of really breaking it by bending or breaking a
	pin.  I thought the A500 owners would like to know what
	type of problems they might encounter. 

	-Tom-