My Amiga 2000 restoration - Page 3

Avrovulcan · 22 May 2020, 17:52

Found three 4Mb SIMM modules for sale on Ebay for my 030 combo card. Thought I'd snap them up whilst they were still available. This means I can remove the SupraRAM card completely and still have enough memory if I revert to 68010 mode.

Jope · 22 May 2020, 18:50

Excellent. This will be quite a capable A2000.

Avrovulcan · 22 May 2020, 20:34

Hopefully. Just ready through all the other posts and threads makes me realise how much iv forgotten.
I'm happy enough with working on/modifying the hardware as I'm an electronics engineer by trade. It's the software/setting up side of things that will take me some time to get back into the swing of things.

Kind regards
Andy

Avrovulcan · 26 May 2020, 23:22

Part 2: Floppy drive cleaning and lubrication

Managed a couple of hours up the loft this afternoon. The job for to day was to clean and lubricate the mechanisms on the floppy drives. These drives (to the best of my knowledge) have never been cleaned. DF0 did work after several attempts at booting WB 1.3, I could hear the mechanism straining as it was trying to pass the head over the disk.

I'll not go into how to actually remove the floppy/PSU sub-chassis as I'm sure its already been done on here more than once, and in any case it's not very difficult to do anyway.

After removing the cover I decided (with the advice I had been given) to remove both the GVP Impact II card and the SupraRAM card. I have 3 GVP 4MB SIMM's on order and they should be here in a day or so. These will be fitted to the 030 Combo card.

Both the floppy drives are fitted to a separate sub-chassis. This is separated by four screws, two each side.

The drives were then seperated by undoing the screws on the underside of the sub-shassis

I suppose each different make of floppy drive has it's cover secured differently. My Chinon drives have a screw each side and one on top at the very rear.

Once the screws are removed and the front cover unclipped, the drive mechanisms can be removed from the cover

I cleaned the head runner, worm gear and motor bearing with Isopropyl alcohol and then re-lubricated with white lithium grease.

The 5 1/4" drive was removed undoing the for screws (two each side) and the protective plate covering the drive mechanism and electronics was removed allowing access to the internals. The drive moving parts and heads were cleans as above and the white lithium grease was applied to the following areas:

Once this was all done the drives were all reassembled and fitted back onto the PSU chassis.

I did give the capacitors a visual inspection. Didn't see anything untoward such as bulging or leaking. I checked a couple on each drive with my Huntron Tracker and the waveforms were as expected.

In case anyone was wondering all my drives are Chinon. What's odd is that the 3.5" drive that came with the machine was a Rev.D and the second one I added a year(ish) later was Rev.0?? Given the vintage of the machine I would have expected it the other way round.

More soon

Regards
Andy

alexh · 27 May 2020, 12:06

I like your home "office".

Avrovulcan · 27 May 2020, 13:28

Cheers.

Most of my test gear is either military surplus or broken test gear I got off Ebay or out of the skip at work and fixed up.

DarrenHD · 29 May 2020, 18:03

Quote:

Originally Posted by Avrovulcan

Cheers.

Most of my test gear is either military surplus or broken test gear I got off Ebay or out of the skip at work and fixed up.

Nice photos thanks! I have an A2000 also and sometimes the floppy drive doesn't read disks that well. Did your cleaning and lubrication of the drives help with their operation? Are they working better now?

Darren

Avrovulcan · 29 May 2020, 19:10

Hi.

Yes. Mind you this was the first time DF1 had been tried, but yes reasonably quiet (I honestly cant remember how noisy they were in the first place lol.).
But both drives read data fine. On the subject of cleaning the heads, TBH I didn't pick up much dirt. The cotton bud was pretty clean after passing it overthr heads. But I'm glad I did it anyway.

On a side note, my 3 4MB GVP SIMM modules turned up today. So that's another job to do.
Out of interest does anyone know if the SCSI2SD can run on 5V from the GVP Combo 030's 50 pin SCSI header or will I have to tap off the 5V from the main power harness

Kind regards
Andy

alexh · 29 May 2020, 20:05

Quote:

Originally Posted by Avrovulcan

Out of interest does anyone know if the SCSI2SD can run on 5V from the GVP Combo 030's 50 pin SCSI header or will I have to tap off the 5V from the main power harness

There’s no power on the 50 pin SCSI connector. It needs separate molecules power connector from the PSU just like a normal hard drive does

Jope · 29 May 2020, 20:17

Quote:

Originally Posted by alexh

There’s no power on the 50 pin SCSI connector. It needs separate molecules power connector from the PSU just like a normal hard drive does

With some controllers the termination power pin gives enough milli amps that the scsi2sd can leech off that. In this setup I'd also recommend just using the Amiga's PSU.

Avrovulcan · 29 May 2020, 22:55

Brilliant

thanks guys.

I'll knock up an adaptor

alexh · 30 May 2020, 21:54

There should be one or two molex power connectors coming out of a standard A2000 PSU

Avrovulcan · 05 June 2020, 17:10

Aye that's right. I think I have ibr spare. If not I'll build a splitter.

As an aside my AmigaOS ROMand disks turned up yesterday as did the battery replacement module.
So I have plenty to do for the next update, which will hopefully also include installing the SCSI2SD PCB and GVP SIMM modules.

Regards
Andy

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Amiga 2000 Restoration and Floppy Header broken Pin	Zippy Zapp	support.Hardware	12	25 June 2020 19:27
Amiga 1200 restoration	RomanCro	Hardware pics	6	15 April 2019 13:55
Amiga 3000 restoration Help	FeRu	request.Other	0	09 October 2018 21:39
Amiga CD32 Restoration	Berig	support.Hardware	16	13 February 2015 22:04
Mousepointer restoration and varying audio pitch at savestate restoration	NoX1911	support.WinUAE	0	22 January 2007 20:19

22 May 2020, 17:52	#41
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Found three 4Mb SIMM modules for sale on Ebay for my 030 combo card. Thought I'd snap them up whilst they were still available. This means I can remove the SupraRAM card completely and still have enough memory if I revert to 68010 mode.

22 May 2020, 18:50	#42
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,906	Excellent. This will be quite a capable A2000.

22 May 2020, 20:34	#43
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Hopefully. Just ready through all the other posts and threads makes me realise how much iv forgotten. I'm happy enough with working on/modifying the hardware as I'm an electronics engineer by trade. It's the software/setting up side of things that will take me some time to get back into the swing of things. Kind regards Andy

26 May 2020, 23:22	#44
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Part 2: Floppy drive cleaning and lubrication Managed a couple of hours up the loft this afternoon. The job for to day was to clean and lubricate the mechanisms on the floppy drives. These drives (to the best of my knowledge) have never been cleaned. DF0 did work after several attempts at booting WB 1.3, I could hear the mechanism straining as it was trying to pass the head over the disk. I'll not go into how to actually remove the floppy/PSU sub-chassis as I'm sure its already been done on here more than once, and in any case it's not very difficult to do anyway. After removing the cover I decided (with the advice I had been given) to remove both the GVP Impact II card and the SupraRAM card. I have 3 GVP 4MB SIMM's on order and they should be here in a day or so. These will be fitted to the 030 Combo card. Both the floppy drives are fitted to a separate sub-chassis. This is separated by four screws, two each side. The drives were then seperated by undoing the screws on the underside of the sub-shassis I suppose each different make of floppy drive has it's cover secured differently. My Chinon drives have a screw each side and one on top at the very rear. Once the screws are removed and the front cover unclipped, the drive mechanisms can be removed from the cover I cleaned the head runner, worm gear and motor bearing with Isopropyl alcohol and then re-lubricated with white lithium grease. The 5 1/4" drive was removed undoing the for screws (two each side) and the protective plate covering the drive mechanism and electronics was removed allowing access to the internals. The drive moving parts and heads were cleans as above and the white lithium grease was applied to the following areas: Once this was all done the drives were all reassembled and fitted back onto the PSU chassis. I did give the capacitors a visual inspection. Didn't see anything untoward such as bulging or leaking. I checked a couple on each drive with my Huntron Tracker and the waveforms were as expected. In case anyone was wondering all my drives are Chinon. What's odd is that the 3.5" drive that came with the machine was a Rev.D and the second one I added a year(ish) later was Rev.0?? Given the vintage of the machine I would have expected it the other way round. More soon Regards Andy

27 May 2020, 12:06	#45
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,452	I like your home "office".

27 May 2020, 13:28	#46
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Cheers. Most of my test gear is either military surplus or broken test gear I got off Ebay or out of the skip at work and fixed up.

29 May 2020, 19:10	#48
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Hi. Yes. Mind you this was the first time DF1 had been tried, but yes reasonably quiet (I honestly cant remember how noisy they were in the first place lol.). But both drives read data fine. On the subject of cleaning the heads, TBH I didn't pick up much dirt. The cotton bud was pretty clean after passing it overthr heads. But I'm glad I did it anyway. On a side note, my 3 4MB GVP SIMM modules turned up today. So that's another job to do. Out of interest does anyone know if the SCSI2SD can run on 5V from the GVP Combo 030's 50 pin SCSI header or will I have to tap off the 5V from the main power harness Kind regards Andy

29 May 2020, 22:55	#51
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Brilliant thanks guys. I'll knock up an adaptor

30 May 2020, 21:54	#52
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,452	There should be one or two molex power connectors coming out of a standard A2000 PSU

05 June 2020, 17:10	#53
Avrovulcan Registered User Join Date: Oct 2019 Location: Craghead, Stanley, Durham Posts: 67	Aye that's right. I think I have ibr spare. If not I'll build a splitter. As an aside my AmigaOS ROMand disks turned up yesterday as did the battery replacement module. So I have plenty to do for the next update, which will hopefully also include installing the SCSI2SD PCB and GVP SIMM modules. Regards Andy

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)