amiga.org
     
iconAll times are GMT -6. The time now is 10:42 PM. | Welcome to Forum, please register to access all of our features.

» Amiga.org » Amiga computer related discussion » Amiga Hardware Issues and discussion » A1000 boots to blinking red screen

Amiga Hardware Issues and discussion This forum is dedicated to the discussion and resolution of issues related to Classic and Next Generation Amiga hardware. Got a problem with a piece of hardware? Click to speak.

Reply
 
Thread Tools Display Modes
Old 11-21-2011, 07:45 AM   #1
SEgamer
Merely Curious
Points: 481, Level: 9 Points: 481, Level: 9 Points: 481, Level: 9
Activity: 12% Activity: 12% Activity: 12%
 
Join Date: Nov 2011
Location: Macon, GA
Posts: 11
Default A1000 boots to blinking red screen

I recently got an A1000 that has some issues. I'm new to amiga stuff and trying to educate myself on it, so please correct me if I'm wrong.

The problem:
The system immediately boots to a blinking red screen. There is no response from the floppy drive when a floppy is in it.(I had to point that out because on another site people kept saying to insert a kickstart floppy). There's no grey screen at all before that. If I remember correctly there's different grey screens, one for each major component, that are displayed during the boot sequence correct?

I looked up the error colors and red appears to be a bad checksum from the boot roms. I'm just wondering if anyone else has had this problem and trying to confirm that it is the roms.

My other question is that should the screen blink or should it stay red? I'm wondering if another chip is causing a timing error and/or other things to reset. I pulled and re-seated every socketed chip and checked the voltages on the psu, but still have the same results.
SEgamer is offline   Reply With Quote
Old 11-21-2011, 08:27 AM   #2
spirantho
Premium Member
Points: 10,848, Level: 68 Points: 10,848, Level: 68 Points: 10,848, Level: 68
Activity: 46% Activity: 46% Activity: 46%
 
Join Date: Aug 2002
Posts: 1,100
Default Re: A1000 boots to blinking red screen

Does your A1000 have a Kickstart ROM or just the bootstrap? In other words, if you boot it without a disk, does it come up prompting for a Workbench disk or a Kickstart disk?
__________________
--
Ian Gledhill
ian.gledhill@btinternit.com (except it should be internEt of course...!)
Check out my shop! http://www.mutant-caterpillar.co.uk/shop/ - for 8-bit (and soon 16-bit) goodness!
spirantho is offline   Reply With Quote
Old 11-21-2011, 10:17 AM   #3
SEgamer
Merely Curious
Points: 481, Level: 9 Points: 481, Level: 9 Points: 481, Level: 9
Activity: 12% Activity: 12% Activity: 12%
 
Join Date: Nov 2011
Location: Macon, GA
Posts: 11
Default Re: A1000 boots to blinking red screen

It only has the bootstrap ROMs. I get the same results with and without a floppy in the drive.
SEgamer is offline   Reply With Quote
Old 11-21-2011, 12:04 PM   #4
Oldsmobile_Mike
Cult Member
Points: 9,639, Level: 65 Points: 9,639, Level: 65 Points: 9,639, Level: 65
Activity: 65% Activity: 65% Activity: 65%
 
Oldsmobile_Mike's Avatar
 
Join Date: Apr 2003
Location: Washington, DC
Posts: 591
Default Re: A1000 boots to blinking red screen

Bad floppy drive, not trying to read the Kickstart disk maybe?
Oldsmobile_Mike is offline   Reply With Quote
Old 11-21-2011, 01:57 PM   #5
motrucker
Premium Member
Points: 14,062, Level: 77 Points: 14,062, Level: 77 Points: 14,062, Level: 77
Activity: 7% Activity: 7% Activity: 7%
 
motrucker's Avatar
 
Join Date: May 2004
Location: Maryland - U.S.A.
Posts: 1,955
Default Re: A1000 boots to blinking red screen

I have seen this happen when an upgrade card that required a special (replacement) PAL chip was removed, but the pal chip was left in. Is that possible in this case? Do you know any of the machine's history?
motrucker is offline   Reply With Quote
Old 11-22-2011, 05:07 AM   #6
SEgamer
Merely Curious
Points: 481, Level: 9 Points: 481, Level: 9 Points: 481, Level: 9
Activity: 12% Activity: 12% Activity: 12%
 
Join Date: Nov 2011
Location: Macon, GA
Posts: 11
Default Re: A1000 boots to blinking red screen

Quote:
Originally Posted by Oldsmobile_Mike View Post
Bad floppy drive, not trying to read the Kickstart disk maybe?
I'm about 90% certain that it's not the drive because the screen asking for a kickstart disk is never shown. I think the screen should show up even without a floppy drive hooked up to it, though I could be wrong.

Quote:
Originally Posted by motrucker View Post
I have seen this happen when an upgrade card that required a special (replacement) PAL chip was removed, but the pal chip was left in. Is that possible in this case? Do you know any of the machine's history?
Unfortunately I don't have any info on it. It came from a guy who's grandfather owned a computer repair shop from the 80's to mid 90's. The chips and other components appear to be original.

I guess my best bet is to get a working board or all of the ICs from a working A1000 and swap stuff out until I find the culprit. I think he had an extra A500 I might be able to use if they're similar.
SEgamer is offline   Reply With Quote
Reply

Bookmarks

Tags
a1000 , blinking , boots , red , screen

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump