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Offline djkoelkastTopic starter

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Is this A2000 recoverable?
« on: May 26, 2011, 08:20:37 PM »
Hi all,

So I bought me an Amiga 2000 with a leaky battery. Nice.
Just removed the battery. There is some damage, but everything seems to be fine (I used a multimeter on some of the lines, they seem fine).

Damage is on one resistor and the big networkresistor (I don't know the correct English name for it) and maybe on the CPU itself.
I've cleaned everything I could, but it still looks like it fails to start. I don't know 100% for sure as I don't know if the other parts work.
It does give 1,5 > 1,65 V out of the composite video port, but I don't get an image yet.
I've cleaned the 68000 pins, reseated the kickstart, so I guess there is something else still not quite good.
When I power up the A2000 it does blink the CAPS LOCK once, I thought that might give some hope.

Here are the pics:

Overall:



Damage on the CPU and RP900:



Damage on the R914:



Other angle:



And another:



What do you guys think? Recoverable or trash the A2000?
Revision number is 4.3

Thanks.
« Last Edit: May 26, 2011, 08:23:02 PM by djkoelkast »
Amiga 4000/060 cybervision64, CyberSCSI MKII, AlfaData BSC MFC3 I/O, Ariadne II, OS 3.9(bb2), 2x IDE > CF 8GB Seagate Microdrive, 1x HD FDD, 1x SCSI ZIP 100

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Offline djkoelkastTopic starter

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Re: Is this A2000 recoverable?
« Reply #1 on: May 26, 2011, 09:16:44 PM »
I removed the CPU, took the pins 1-5 on the slot next to it (looks like a Zorro slot), they connected.

So I cleaned with lemon juice, after that water, after that iso alcohol. Looks a lot cleaner now.

Just tested:

All cpu pins do connect with the underside of the mainboard when the cpu is socketed.

When I turn the thing on CAPS LOCK blinks, tv gives a strange wobble for a brief moment and stays black after that. The floppy drive never starts to "click" for a disk.
When I press CTRL + Amiga + Amiga and release the CAPS LOCK blinks (shorter than when I turn the power on), but no image.

Could it be something else is not right?
Amiga 4000/060 cybervision64, CyberSCSI MKII, AlfaData BSC MFC3 I/O, Ariadne II, OS 3.9(bb2), 2x IDE > CF 8GB Seagate Microdrive, 1x HD FDD, 1x SCSI ZIP 100

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Offline djkoelkastTopic starter

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Re: Is this A2000 recoverable?
« Reply #2 on: May 26, 2011, 10:08:33 PM »
After reading this topic:

http://www.amiga.org/forums/showthread.php?t=57873

I think the CPU socket might still be the best bet (as my caps lock also stops working after turning it on/off several times).
Amiga 4000/060 cybervision64, CyberSCSI MKII, AlfaData BSC MFC3 I/O, Ariadne II, OS 3.9(bb2), 2x IDE > CF 8GB Seagate Microdrive, 1x HD FDD, 1x SCSI ZIP 100

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Offline djkoelkastTopic starter

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Re: Is this A2000 recoverable?
« Reply #3 on: May 27, 2011, 09:23:57 AM »
I've ordered a new socket, so that's on it's way ;)
Amiga 4000/060 cybervision64, CyberSCSI MKII, AlfaData BSC MFC3 I/O, Ariadne II, OS 3.9(bb2), 2x IDE > CF 8GB Seagate Microdrive, 1x HD FDD, 1x SCSI ZIP 100

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Offline djkoelkastTopic starter

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Re: Is this A2000 recoverable?
« Reply #4 on: May 27, 2011, 05:58:53 PM »
Compare


with


Which ones should connect on mine?
Amiga 4000/060 cybervision64, CyberSCSI MKII, AlfaData BSC MFC3 I/O, Ariadne II, OS 3.9(bb2), 2x IDE > CF 8GB Seagate Microdrive, 1x HD FDD, 1x SCSI ZIP 100

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Offline djkoelkastTopic starter

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Re: Is this A2000 recoverable?
« Reply #5 on: May 27, 2011, 06:11:10 PM »


So I guess this might be the problem? How can I fix this?
Amiga 4000/060 cybervision64, CyberSCSI MKII, AlfaData BSC MFC3 I/O, Ariadne II, OS 3.9(bb2), 2x IDE > CF 8GB Seagate Microdrive, 1x HD FDD, 1x SCSI ZIP 100

http://www.retroforum.nl