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Author Topic: The A1200 that has never "bin" opened...  (Read 3170 times)

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Offline motorollinTopic starter

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The A1200 that has never "bin" opened...
« on: January 12, 2006, 06:12:18 PM »
Well, it has "bin" opened now! :-) (Look here if you don't know what I'm talking about).

Had a bit of a shock when I opened her up though - just look at this:


She seems to work ok, and the motherboard looks fine underneath. I wonder whether I should remove that rusty shielding? Would the machine still work ok without it?

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline motorollinTopic starter

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Re: The A1200 that has never "bin" opened...
« Reply #1 on: January 12, 2006, 06:24:17 PM »
Arrrr I think it's dead :shocked:

Just powered it on, and I think the PSU turned itself off, but I can't quite remember. Now when I turn it on I just get a red screen and a flashing power LED :-(

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline motorollinTopic starter

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Re: The A1200 that has never "bin" opened...
« Reply #2 on: January 12, 2006, 06:35:35 PM »
That's what I thought. I gently pushed down on them but it didn't make any difference. Left it off for a while and it started working. Weird. I've still got my 3.0 ROMs from when I upgraded my main 1200 to 3.1, so if it does it again I'll try swapping them.

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline motorollinTopic starter

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Re: The A1200 that has never "bin" opened...
« Reply #3 on: January 12, 2006, 08:44:45 PM »
It seems ok now. I did remove the shielding just in case. I think I have some more from when I towered my main A1200, so I may replace it with that.

In order to remove it I had to take the floppy drive out, and I found something very interesting. Underneath the drive on the shielding was loads of black insulating tape. I turned the drive over and there was an exposed PCB - not something I have had on any of my other Amigas, and obviously the reason for the insulating tape.

I had noticed that the drive was acting strangely. Firstly, it doesn't click when empty. Secondly, if I boot using a Workbench disk then remove the disk, the drive starts clicking like mad, the floppy light comes on and a DF0:NDOS icon appears on the Workbench. If I put another disk in, it reads it and this weird activity stops.

Could it be that the drive has been changed to a non-Amiga one? This would clearly mean that it has "bin" opened after all!

After removing the shielding, I inspected the motherboard. First thing I noticed was that the rust has extended to the shielding on the RF modulator. I then saw a sticker on the motherboard for "Macklin Repair" stating "RF not working". No sh!t.

I'm now convinced that the machine has been opened. The warranty sticker was still there, but was a little bit damaged on one edge. I reckon he took it off then replaced it :pissed:

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10
 

Offline motorollinTopic starter

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Re: The A1200 that has never "bin" opened...
« Reply #4 on: January 13, 2006, 07:03:18 AM »
@Gav
Yeah it's working now. I'm not using the RF so I don't know if it works or not. Have you ever seen an A1200 floppy that doesn't click?

--
moto
Code: [Select]
10  IT\'S THE FINAL COUNTDOWN
20  FOR C = 1 TO 2
30     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NAAAA
40     DA-NA-NAAAA-NAAAA DA-NA-NA-NA-NA-NA-NAAAAA
50  NEXT C
60  NA-NA-NAAAA
70  NA-NA NA-NA-NA-NA-NAAAA NAAA-NAAAAAAAAAAA
80  GOTO 10