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Author Topic: Amiga 1200 tower saga - troubles abound  (Read 2078 times)

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Offline blakespotTopic starter

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Amiga 1200 tower saga - troubles abound
« on: February 15, 2013, 11:33:12 PM »
So, I've made many posts about my Amiga 1200 tower and the issues it is having. I thought there was a PSU issue. Several. And maybe there were. Likely, but I am not sure at this point.

Things worked fine for a long time, then it started rebooting all the time at startup. Over and over. It has a Blizzard A1260.

Several PSU replacements later, I add the jumper to NOT move ROM it to 32-bit RAM and things boot up. All of a sudden this matters, somehow.

Boots up fine over and over. So I remove the jumper just to see -- doesn't boot -- every 6 seconds I see the 1260 color flash and the power light is blinking the whole time.

So I add it back. System just sits there dark.

So I remove it. Every 6 seconds color flash reboot.

So I add it back. Every 6 second color flash reboot. --- Now same result either state of jumper.

What the hell is going on?

It's getting good power now. Caps are not leaking - shiny solder joints under each, no leakage evident. I have the SCSI adapter for A1260 and two drives on it, been booting from both fine before things went odd.

This thing is driving me crazy. I spent the afternoon watching AGA demos, before I fiddled with this thing. It's sad to see things as they are now.

Ideas? Thanks.




bp
:: ByteCellar.com - The Vintage Computing Weblog
:: Amigas: 1000, 2000 '020, SAM440ep-Flex
 

Offline blakespotTopic starter

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Re: Amiga 1200 tower saga - troubles abound
« Reply #1 on: February 16, 2013, 02:35:41 AM »
That's covered. No problem there. Using a proper ATX to A1200 power adapter AND have 5v going into the A1200 floppy port. Power is not a problem.



bp
:: ByteCellar.com - The Vintage Computing Weblog
:: Amigas: 1000, 2000 '020, SAM440ep-Flex