Amiga.org
Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: redrumloa on October 18, 2008, 12:51:09 AM
-
(http://i35.tinypic.com/t00yro.jpg)
This one I will probably keep for myself :-D
-Edit-
Update 12/23/08, it lives!!
-
A 3000 tower, sweet. I don't blame you!
-
Amiduffer wrote:
A 3000 tower, sweet. I don't blame you!
:-)
I have always wanted a genuine A3000T. I will probably put a Prometheus and Deneb in it, with god only knows what else :lol:
-
Cyberstorm MKIII?
-
alexh wrote:
Cyberstorm MKIII?
Maybe a CSPPC.
-
Hmm, not booting. This has probably been in storage for many years. This unit is very clean and the battery had been removed, with no damage to the area. These was a WarpEngine installed, but I also tried a A3640 in it. I pushed on the socketted chips but no go so far. The socketed chips were all raised. I suspect it is something minor from being in storage for so long. I'll start tomorrow by completely reseating all socketted chips.
Any other suggestions before I break out the C= service manual?
-
Faulty power supply?
-
x56h34 wrote:
Faulty power supply?
Not likely. I'll jump on it tomorrow, I'm exhausted now. I've driven ~42 hours in 3 days :crazy:
Beddy bye Bozo time :lol:
-
Beddy bye Bozo time
Not Bonzo?
If I calculate the gas from driving to the land of Cleve and back, I can figure out how much money you'll need to make from selling the goodies to break even. Then, I can announce it and have all the complainers come out of the woodworks complaining about how you don't need to charge so much because all that stuff didn't cost you anything. :oops:
-
Hey! That looks a lot like my A3000T! 'cept mine is totatly dismantaled settin' on a desk flashing me the green screen... :egad:
-
... flashing me the green screen
it wants to put you in a movie
-
Blown caps?
Corosion on contacts?
Check voltages at various areas on the motherboard and the PS.
P.S. Interestingly the Random Photo is the picture from Byte magazine on the launch of the A3000.
-
Congrats!! I had a bad 3000T mobo too. Turned out to be a leaky battery. Did your battery leak at all? Check the traces near the battery and in the area.
I am using your Promoethious PCI card in mine with a Voodoo 3000 card, runs great!
-
weirdami wrote:
Not Bonzo?
Naah, I am quoting the Genesis video which sounds like Bozo :lol:
If I calculate the gas from driving to the land of Cleve and back, I can figure out how much money you'll need to make from selling the goodies to break even. Then, I can announce it and have all the complainers come out of the woodworks complaining about how you don't need to charge so much because all that stuff didn't cost you anything. :oops:
I've pretty much learned to shrug off price complaints, I even get them when I sell something at or below cost. The complaints are rare, luckily. This lot did serious damage to my bank account and was a near nightmare in travel for more reasons than just travel time, I fully intend to turn a healthy profit :mickeymouse:
-
Blown caps?
Corosion on contacts?
Nope and nope, the motherboard (and computer itself) looks almost like it just rolled off the assembly line. After sleeping on it, I am starting to think jumpers may be wrong. Anyhow, I'm going to button her up for a fews days. I've got some work to do :-)
-
Congrats!! I had a bad 3000T mobo too. Turned out to be a leaky battery. Did your battery leak at all? Check the traces near the battery and in the area.
Luckily, no. The battery was removed and the battery area is immaculate!
I am using your Promoethious PCI card in mine with a Voodoo 3000 card, runs great!
I agree, the Prometheus is a fantastic PCI board! I will probably use all 4 PCI slots (Voodoo, sound card, ethernet, Catweasel) and all remanding 4 Zorro slots (Deneb is a given). Now to get someone to trade a CSPPC for a SuperCPU 128..
-
ahhhhh, the envy. :lol:
-
Cool computer although those towers are ugly.
-
What does it display when you power on?
Is this an o4o version? (Says o4o on the front panel)
Does the screen display any colours or is it grey in colour, almost white?
-
What does it display when you power on?
Nothing.
Is this an o4o version? (Says o4o on the front panel)
No it's 030 version.
Does the screen display any colours or is it grey in colour, almost white?
No colors, as a matter of fact no CPU activity at all it seems. I hit the caps lock button and the light stops coming on after the 6th time. The last thing I did was remove the CPU card and set jumpers for onboard 030, still nothing.
-
No colors, as a matter of fact no CPU activity at all it seems. I hit the caps lock button and the light stops coming on after the 6th time. The last thing I did was remove the CPU card and set jumpers for onboard 030, still nothing
Hmm, sounds exactly like my A3kT when it died. The key assembly fell apart and there was one pin wedged between the motherboard and a zorro slot. It ended up killing my CPU.
And the symptoms you have are identical to my machine when i would power on.
Is the power on LED also dimly lit?
Even if you try to use another CPU card, the o3o A3kT's still use some of the circuitry on the o3o to run a CPU slot card.
EDIT:
Here is the post (http://www.amiga.org/forums/showthread.php?t=30510) of the issues I had with my A3kT
-
I had a heck of a time with my A3000T also. I was able to get it working with an A3640 (mine is the rarer 040, not the common one you have) but had problems getting a CS MKII working. It ended up being jumpers. Plus I needed the infamous missing chip. The jumpers were not an easy thing. It seemed that different people got theirs working with different jumper settings. There are threads on here about it. If you are missing the missing chip pmail me. I bought 10 to get one. I will gladly send one or two your way.
Dan
-
Thanks for the offer, I seem to have this chip installed. Strangely from what I've read, it seems the jumpers were wrong for having this chip installed, so I still suspect jumpers. Do you know what the default jumpers are? I should have the service manual, but it is burried under the mountain atm.
-
What missing chip are you guys talking about?
@Red:
no more photos?? :-)
-
After sleeping on it, I am starting to think jumpers may be wrong.
I think the problem is probably you sleeping on it. :python:
-
Red, do you have the key? Ifso, is the switch set to unlocked? It should, otherwise the machine will not work. Also, be sure to check the cable (blue) from the key to the motherboard, they tend to come loose. Same thing, cable not connected, non working amiga.
The jumpers for a 3640 are indeed different then for the onboard 030, check amiga.resource.cx for a picture of the motherboard, set the jumpers identical and it should work.
I just got another 3000T-040 which also didn't work, but troubleshooting it was a little more difficult because it has no 030 onboard. Finally got her running setting the jumpers to INT and using a GVP TRex board.
Good luck, she is one of the most worthy machines to get working again!
-
Red, do you have the key? Ifso, is the switch set to unlocked? It should, otherwise the machine will not work. Also, be sure to check the cable (blue) from the key to the motherboard, they tend to come loose. Same thing, cable not connected, non working amiga.
Well I'll be dipped in s**t!! I didn't even think about the key :lol:
Thanks for the info, good stuff! I'll probably take a night off from new listings to play with the A3000T, see if I can get it working.
-
da9000 wrote:
What missing chip are you guys talking about?
@Red:
no more photos?? :-)
The missing chips is a 74F08N, you need this chip to use some boards like A3640.
I haven't had a chance to play with the A3000T between the day job and running the side business. I'll try to get some more pics up tonight if you'd like. I'll probably tinker with it tonight instead of listing more stuff, need a night off :lol:
-
redrumloa wrote:
Well I'll be dipped in s**t!! I didn't even think about the key :lol:
Well, the key appeared to be in the locked position. Unfortunately I put a key in and turned.. And the switch exploded :pissed: I guess I have to bypass this darn thing.
Anyone know how to bypass this switch :-?
-
(http://i35.tinypic.com/2mriihc.jpg)
Cut and tie the black and red pair or cut and tie the black and yellow pair to bypass the switch?
This is what happened to the switch.
(http://i36.tinypic.com/14mx35d.jpg)
-
"..this amiga will self-destruct in 10..9.."
:lol:
-
@Red,
Make sure you get all the brass pins out of your machine, what killed my A3kT motherboard was one of those pins wedged between the Zorro slot and the motherboard, shorting out some of the pins on the zorro slot.
I have long since sold my A3kT, other wise I would of told you which wires to short together... I just don't remember... Seems my memory is going to sh*t since my surgery. :-(
-
@nine3o
Luckily in was unplugged when it exploded, i was able to clean out all the brass pins.
Surgery? I hope all is well :-?
-
So is it working then?
-
tonyyeb wrote:
So is it working then?
No, I need find out which wires to cut and tie to bypass the case key switch :-? A quick look at the C= service manual gave me no clues. I'm thinking maybe both?
-
I would have thought this would be the case for a switch of this type, just connect the same postiive/ and negatives together.
-
redrumloa wrote:
(http://i35.tinypic.com/2mriihc.jpg)
Cut and tie the black and red pair or cut and tie the black and yellow pair to bypass the switch?
I have one that runs with the left yellow wire tied to the rightmost black (next to the red) and the red wired to the black to it's left on your picture, between the yellow and the red...
-
Surgery? I hope all is well :-?
So far so good, had open heart surgery. One of my valves was not working properly so had to go under the knife to get it repaired (thankfully that is the best scenario for me, the other option was replacement). But since then my memory is not what it used to be, I think it's all those drugs :-)
But that's off topic here. I wish I could remember which wires were crossed on mine. But I think you should be able to just unplug the connector from the blue wire harness to the key assembly, it should boot up with the exception of your keyboard working.
But again this is based on a memory that is slipping. :-(
-
Hey Red,
Did you get this running yet or still sorting thru all those wonder full boxes of Amiga goodness?
-
[color=ff0000]IT FRICKEN LIVES!!!!!!!!!!!![/color]
(http://freon.shackspace.com/misc/banana-rock.gif)
-
Well, that makes at least two resurrected this week.
'Tis the season to be jolly.
-
/
-
Lorraine wrote:
@ Red
So how did you pull it off in the end?
I tracked the problem down to the power supply. The PS was putting out close to normal voltages according to the simple MM test, but there was no +5V on PG. I ordered a replacement PS from Vesalia (EU 220V) and bench tested with a 110V - 220V step up transformer, the 3000T came right up.
Next step is to convert it from EU 220V to 110V US.
-
so this is for what you were willing to pay $100 for a power supply?
-
happy its working!!! :-D :-D
now i just gotta figure out why my A4k's not very well :-?
here's to xmas and a hotair re-working station!
-
Congratulations :-D
It sure is a nice x-mas present for yourself :-)
-
redrumloa wrote:
I tracked the problem down to the power supply. The PS was putting out close to normal voltages according to the simple MM test, but there was no +5V on PG. I ordered a replacement PS from Vesalia (EU 220V) and bench tested with a 110V - 220V step up transformer, the 3000T came right up.
Next step is to convert it from EU 220V to 110V US.
It's easy to do. I did it a couple of years ago when my A3000T supply died. Order the 220V EU supply just like you did. If i remember right (and I'm sure I don't) there was one jumper wire to change and one of the input wires had to move to a different tap. It clear what has to be done once you open up the supply.
-
mdivancic wrote:
It's easy to do. I did it a couple of years ago when my A3000T supply died. Order the 220V EU supply just like you did. If i remember right (and I'm sure I don't) there was one jumper wire to change and one of the input wires had to move to a different tap. It clear what has to be done once you open up the supply.
Sort of. I did that and I get what appears to be good voltages, but no +5V on PG (Power good, or Fail). It works fine as a 220V, but no PG as a 110V.
-
redrumloa wrote:
Sort of. I did that and I get what appears to be good voltages, but no +5V on PG (Power good, or Fail). It works fine as a 220V, but no PG as a 110V.
OK, found the before pictures I took when I did my surgery back in 2005. Can't find the after pictures I took. Let me open up the supply and see what all was changed and I'll post some photos. Should be able to get this done tonight.
-
mdivancic wrote:
OK, found the before pictures I took when I did my surgery back in 2005. Can't find the after pictures I took. Let me open up the supply and see what all was changed and I'll post some photos. Should be able to get this done tonight.
That would be sweet.
-
@mdivancic
I've approved the photos you uploaded.
One question. In the first couple photos, you mean add a wire between these points, right? THAT would make a lot of sense, I was missing a step altogether. Your last photo with the question marks. That does not need moved, it is like that in US an EU, no need to move anything.
You sir are a bad ass :-D All bow to the mighty mdivancic :bow:
-
redrumloa wrote:
@mdivancic
I've approved the photos you uploaded.
One question. In the first couple photos, you mean add a wire between these points, right? THAT would make a lot of sense, I was missing a step altogether. Your last photo with the question marks. That does not need moved, it is like that in US an EU, no need to move anything.
You sir are a bad ass :-D All bow to the mighty mdivancic :bow:
Photo A & Photo B show where the jumper goes (Sorry I uploaded the "A" photo twice). So yes, add a wire. I had to take the step down transformer board out to add the jumper.
Photo A (http://www.amiga.org/gallery/index.php?n=2835=11)
Photo B (http://www.amiga.org/gallery/index.php?n=2836=11)
I guess you already figured out before I posted that you had to move the wire in Photo "C"?
Photo C (http://www.amiga.org/gallery/index.php?n=2837=11)
Ok, Photo "D" is the big mistery? I sounds like there is nothing there on your board? I though there was a jumper running from questions marks to the step down transformer board. If not, then you are done after you make the last change.
Photo D (http://www.amiga.org/gallery/index.php?n=2838=11)
I honestly can't remember now. Good luck!
-
My A3000T PS is now converted to 110V thanks to you and it works 100%!!!
mdivancic, thank you very much for saving me time figuring out what was missing! If I can return the favor, let me know.
:banana:
-
An A3000T, the machine I wanted back in the days, but could not afford....
Glad you got it working :-)
-
ReDrum said:
My A3000T PS is now converted to 110V thanks to you and it works 100%!!!
Thanks also from me. My new A3000T power supply is also working. I haven't put it through all it's paces yet but the computer powers up and boots so that is a big first step!!
I wish I had a schematic of the power supply. I am still trying to figure out exactly what that new wire we put in does because that wire does not exist on my old power supply. The places where it hooks up that are shown in the above pictures are there but there is no wire.
Dan
-
redrumloa wrote:
My A3000T PS is now converted to 110V thanks to you and it works 100%!!!
mdivancic, thank you very much for saving me time figuring out what was missing! If I can return the favor, let me know.
:banana:
Let's see? Got a spare Cyberstorm III laying around anywhere? :-)
Glad I could help actually. I've had those photos for a couple of years and have not done anything with them. At least now they are here where others can use them!
-
@dannyp1
I got mine fully working it seems, mouse and keyboard included. It turns out to bypass the keylock you simply leave the 2 pairs of wires open, cutting them will do. I was under the impression I'd have to tie them together, but that is what locks out mouse and keyboard.
-
dannyp1 wrote:
Thanks also from me. My new A3000T power supply is also working. I haven't put it through all it's paces yet but the computer powers up and boots so that is a big first step!!
I wish I had a schematic of the power supply. I am still trying to figure out exactly what that new wire we put in does because that wire does not exist on my old power supply. The places where it hooks up that are shown in the above pictures are there but there is no wire.
Dan
I've never been able to find power supply schematics. The official repair documents don't cover power supplies. I would bet that there are several different revisions of power supply for each computer.
I'm not sure what the wire does, as the supply "should" work if the transformer is a 1:1 with a center tap. The 220v would hook to the center tap, while the 110v hooks across the whole coil. Maybe the jumper has something to do with the NTSC tick signal?
-
I was getting TICK, but no PG (Power Good). It must have something to do with PG.
-
redrumloa wrote:
I was getting TICK, but no PG (Power Good). It must have something to do with PG.
Don't know? If you ever come across documents on the power supplies in you travels please share them.
-
mdivancic wrote:
If you ever come across documents on the power supplies in you travels please share them.
Sure thing. I have the A3000T service manual also, but nothing on the power supply in it :-/