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Author Topic: 1084s plugged into Serial port  (Read 1568 times)

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Offline spaceman88Topic starter

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1084s plugged into Serial port
« on: November 28, 2010, 01:03:58 PM »
Yes, you read that correctly. I plugged my monitor into my A2000 serial port (didn't have my glasses). Now it will boot off a floppy, but not the SCSI drive on the GVP card inside. I had used the A2000 about 3 weeks ago and every thing was fine. Do you think I burnt something out or was this just a random failure?
 

Offline Jiffy

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Re: 1084s plugged into Serial port
« Reply #1 on: November 28, 2010, 01:54:02 PM »
Quote from: spaceman88;594987
Yes, you read that correctly. I plugged my monitor into my A2000 serial port (didn't have my glasses). Now it will boot off a floppy, but not the SCSI drive on the GVP card inside. I had used the A2000 about 3 weeks ago and every thing was fine. Do you think I burnt something out or was this just a random failure?


You might have fried one of the CIA-chips. Swap them out (your Amiga has two) to see if the error changes. If it does, you know for sure your CIA is fried. Replace it with a working one, presto.

As the CIAs are socketed in your A2000, this is a very easy and cheap repair. No soldering required, just pop out the defective chip and carefully put in a working one, done.
Life sucks. Then you die. Then they throw mud in your face. Then you get eaten by worms. Be happy it happens in that order... My Amiga 1200
 

Offline Merc

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Re: 1084s plugged into Serial port
« Reply #2 on: November 28, 2010, 03:12:57 PM »
You might want to check the pins on the serial port too, IIRC the RGB connector is 23-pin so the extra pins in the serial connector might have been bent and might be shorting to something else.
 

Offline spaceman88Topic starter

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Re: 1084s plugged into Serial port
« Reply #3 on: November 29, 2010, 10:48:00 PM »
Quote from: Jiffy;594991
You might have fried one of the CIA-chips. Swap them out (your Amiga has two) to see if the error changes. If it does, you know for sure your CIA is fried. Replace it with a working one, presto.

As the CIAs are socketed in your A2000, this is a very easy and cheap repair. No soldering required, just pop out the defective chip and carefully put in a working one, done.


Hi, I took the CIA chips out of another 2000 board that was destroyed by a leaking battery and it fixed the problem. I also checked the serial port, it has two more pins than the video port, but somehow I didn't bend them over. Thanks for the help.