16 February 2016, 15:00 | #1 |
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Amiga 500 plus floppy drive fail.
I will add there is no sound of clicking from the floppy drive.
I have recently purchased an Amiga 500 plus - which was sold with a 'broken' floppy drive. When I first opened (took apart) the Amiga I noticed the floppy power cable was not installed properly, so I brought a new one and installed it. But the Amiga floppy disks continued not to function properly, moreover, I added a fully working floppy drive, but again the floppy disks don't do anything? More Info: When I install all the floppy cables - power cable and floppy cable into the motherboard no floppy drive light shows on the keyboard. But when I uninstall the floppy power cable and restart the Amiga - the floppy drive light shows on the keyboard? |
16 February 2016, 15:10 | #2 |
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Join Date: Jan 2016
Location: Germany
Posts: 325
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Maybe one CIA chip is broken ... Change the CIA A ans CIA B on the board and see if floppy works again
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16 February 2016, 15:10 | #3 |
R.I.P Smudge 18-08-16
Join Date: Aug 2005
Location: Leicester/UK
Age: 66
Posts: 3,968
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Sounds like some kind of short. Maybe that's why the power cable was disconnected.
Failing that it might be one of the CIA's. Other than those two, I can't say. |
16 February 2016, 15:18 | #4 | |
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Join Date: Jan 2014
Location: BO/Italy
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Quote:
You should hear a tic from it and it should start working when you insert a floppy disk (and when reading the light should turn on) while, if the floppy drive is missing or badly connected, the light initially turns on and then turns off. |
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16 February 2016, 20:54 | #5 |
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I have changed both the CIA A and CIA B chips on the motherboard - I swapped the chips from my working 500 with the chips from the 500 plus. The chips I thought were damaged are fully working. But the disk drive is still not functioning properly (I can hear the sound of the drive motor).
*update* I have noticed the battery has leaked (pic1), the gary socket has been affected (pic2), as you can see there is green residue in the socket when I lift the chip out. Any ideas on how to fix this or should I look for another motherboard? pic1. pic2. Last edited by jacob1990; 17 February 2016 at 20:46. |
17 February 2016, 21:26 | #6 |
Commodore Collector
Join Date: Aug 2001
Location: Austria
Age: 53
Posts: 944
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My main concern would not be only the Gary's socket, but more the traces below it ?
Some of these seem to have been dissolved by the acid of the leaked battery. I would check them with an ohm-meter, if they are still ok or not ? If they are broken, you would need to replace them with some small wires on the underside of the board. (it is best to take a look at the schematics to see where the lines start and where they end) |
17 February 2016, 22:49 | #7 |
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I'm actually going to give up on this one...
May I ask - how much do you think I would get for this Amiga (plus working psu and modulator)? |
20 February 2016, 07:57 | #8 |
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Join Date: Jul 2003
Location: Helsinki / Finland
Age: 43
Posts: 9,861
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£15? Not much.
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