Amiga 2000

[mechy]

first thing to do is remove that green leaking battery off the board. it looks like it is fuzzy and ever day left on it will cause more damage. the machine will operate fine without the battery.

We need some more information as to what the machine is or is not doing to help you.
After removing the battery take some close up pics of that area.

[mechy]

Thats a nickel–metal hydride battery already so no need to remove or replace at this time. Looks fine to me.
The original batteries were Ni Cad and leaked badly.

Nimh has the same exact problem as nicads, they leak just the same and corrode just the same. They are not a fix for nicad.

Replacing it with something like oldsmobilemike said is the safe bet.

His battery does look ok thought, with the close up pic. Speckles on the board are probably from the old battery,

[mechy]

Hi thank you for advice but if the Amiga will still work without the battery
I don't really want to try soldering a new one to the motherboard,lol
is it easy to remove the battery without damaging any thing ,best wishes Brian.
 
 ps  
    Here's some of the updates
 its been upgraded to Kickstart 3.1 and it still has its factory fitted Commodore SCSI card complete with an old Apple SCSI HDD which I think has Workbench 3.5, it also has a SCSI CD drive installed, the cable is dissconcted

Looks like a nice machine, i suspect it will work fine when you get it.

[mechy]

When I replaced my battery I soldered a CD audio cable with 1 end cut off and put the battery on a small board with connector pins on it, then mounted it behind the LED's, no ISA slot used so fits great and I can remove it easy for replacement, no removing the motherboard!

Chris

why not use a cr2032 socket with a diode and lithium battery, they don't leak and you can replace it easily. I hate to see it,but people still insist on installing nicads,nimh and or alkalines,and even off the board these can do damage because they can outgas when they leak and still corrode components. I say remove the threat entirely.

[mechy]

Yes, that should work.  You plug the 4-pin connector on the board directly into the 4-pin connector on the hard drive, the shorter the cable the better.  As an alternative I believe you could power the hard drive directly from the A2000's PSU and plug NOTHING into the connector on the board, this is if you didn't have the special Female-to-Female cable.

Off the subject, but i see you keep saying "the shorter the better" on the scsi cable, on scsi1 the cable length is allowed to be 3 meters,so figure over 9feet is acceptable. I have used everything from 1ft to 7foot cables with tons of devices and they all work fine. SCSI 1 is quite forgiving and works well. proper termination is important on any scsi.

[mechy]

I was referring to the 4-pin connector running power from the A2091 card to the drive.  Wouldn't you say "the shorter the better" on that, too?  Not to mention he's not going to want a 9' long cable coiled up inside his A2000, LOL!  :roflmao:

HAH i should pay better attention.. i'd pay a dollar to see a 9ft cable coiled up inside tho .:rofl:

[mechy]

Hi I do thank you for all the help but I must have set every setting I can and I have checked and checked and looked at your pics which have the identical settings as the pics shown I have looked on the net and booted up with just the hard drive and changed the jumper setting and no joy,
so I will try another direction which might not be the right one ,but a Buddha and a TrueIDE device is my next step ,very best wishes Brian. ps there are 3.1 roms fitted

i have been following along and just wanted to make sure of one thing.

Mrmoonlight, check for a jumper that says AUTO and DIS by it, it may not be easy to pick out in the picture. make sure the jumper block is set to auto side. if it is not the scsi device wont be loaded from rom and you wont be able to use the hd.

Another important thing, on scsi cables, always use the 2 end connectors, never leave a part of the cable hanging loose not connected to anything.

I am confident we can get this working without you having to buy more hardware(unless hardware is dead). scsi is really superb on lesser powered systems.


With the above correct, do you have a way to load sysinfo from a floppy and look in DEVICES to see if scsi.device is there?

[mechy]

The jumper should be on Auto.  I suspect it was on DIS because the previous owner it was mentioned had an accelerator in there that the drives were connected to.  I assume they disabled the SCSI boot function on the A2091 and were just using it as a ram expansion, or something.

Flip it to Auto and power up with no drives connected.  It might take a while because it's attempting to scan the SCSI bus, but eventually you should get a "Insert Workbench disk" screen.

Also try accessing the "both mouse buttons" early startup menu - just to make sure it's showing up there, and reported as working correctly.

Unless something is badly wrong with the drive, he should be able to pop in a wb3.1 install disk and it should boot the floppy, then he can use hdtoolbox to redo the HD,then reinstall workbench maybe.

[mechy]

if you need rev. 7 roms i have some.

[mechy]

Man, I wish you still had your webpage. I needed some Rev. 7 ROM's for another project and had to order them all the way from Europe. Got anything else you're holding back on? lol
 
 After 7 pages of comments on this thread I can't seem to get away from, I think we've hit the nail on the head.  I don't recall Brian posting what model or size hard drive he's trying to use, but putting my Sherlock Holmes hat on, I'd say that that's maybe why the 2091 isn't seeing the drive attached to it now.  It's old ROM version isn't working with a more modern drive?  I bet you get these upgrade ROM's might just solve your problems!  

I have pretty much everything i had on the store. Tons of scsi cables,terminators,new 68010's,zips,dips,44pin ide cables,40 pin ide cables,33c93a scsi chips,oscillators,you name it  if you ar ein need of something, let me know

[mechy]

Shoot, I just bought a 68010 and a 33c93a from ebay in China a month ago.  Will email you first, next time I have a project!  You don't happen to have any 1Mx4 60ns DIP's for a VXL*30, do you?  I've been looking for those for about two years.

i have the 60ns 1Mx4 zips.. $1.80ea, just pm me with what you need.