Problem with Amiga 3000T , Please help !

[mechy]

Many thanks for the thoughtful reply. Measuring a 0.3V drop here, and 3.05V total on the anode side - looks like it'll go a few more years yet, with the potential to do a bit better with a Schottky.

This is probably obvious, but it's worth mentioning I've had great luck with the Renata (or anything made in Japan) 2032's. The Chinese ones die quickly.

No problem with original sony coin cells here, i guess the people having capacity problems are buying those cheap china cells.

Also if there is a bad diode in the circuit or left over leakage from a bad battery that was not cleaned well and can be conductive in some cases.
 it can drain the batteries prematurely.


Mech

[TjLaZer]

Dude, why waste your time trying to fix that POS computer?  Everyone knows that the best computer is the Amiga 2000.  (The great Doom Master even thinks so!)   It's a work horse and never has issues like this!  

My A3000T is also not working. I think it has a flakey CPU slot on it.  It's just a big hunk of metal right now.  Dead as a doornail.  I have to open it up every so often and reset the CPU card on it to get it to work.  Never have this problem with my Amiga 2000's...

[nscaleworld]

Dude, why waste your time trying to fix that POS computer? Everyone knows that the best computer is the Amiga 2000. (The great Doom Master even thinks so!) It's a work horse and never has issues like this!
 
My A3000T is also not working. I think it has a flakey CPU slot on it. It's just a big hunk of metal right now. Dead as a doornail. I have to open it up every so often and reset the CPU card on it to get it to work. Never have this problem with my Amiga 2000's...

This is the reason why I am using the onboard 68030 chip.  I will be sorting out the zip memory problem and I will install a CR2032 coin battery.  I will let you guys know how this turns out.  Even though the Amiga 2000 is more stable, I think that the Amiga 3000T is an absolutly beautiful computer, and I always wanted one.  I plan to install a PPC board and Amiga OS 4.0  I already have a GVP graphics board and a network board.

[nscaleworld]

Make sure that the threaded standoffs that are used to secure the processor board in the Amiga 3000T computers cpu slot are the correct size. If the standoffs are the wrong size you will have problems with the cpu slot.  You can not just plug in the processor board.  It must also be screwed to the aluminum standoffs, and the standoffs are screwed to the motherboard.

[mechy]

Dude, why waste your time trying to fix that POS computer?  Everyone knows that the best computer is the Amiga 2000.  (The great Doom Master even thinks so!)   It's a work horse and never has issues like this!  

My A3000T is also not working. I think it has a flakey CPU slot on it.  It's just a big hunk of metal right now.  Dead as a doornail.  I have to open it up every so often and reset the CPU card on it to get it to work.  Never have this problem with my Amiga 2000's...

I cant tell if you are joking or what,but siding with doomy has already blown it for you.. :biglaugh:

The 3000(t) can be as reliable as anything if its in good condition, 90% of these i have fixed have been problems with bad connections somewhere, the rest were power supplies,bad factory chip socket here and there,etc.

Its a known problem the accelerators can work their way out with heating/cooling cycles on big box machines. That is why there are metal standoffs to secure it to. Use them,they stop many problems of bad connections to the accelerator boards.Socketed machines will eventually all suffer more connection problems than surface mount machines down the road..Commodore did not exactly use the best sockets.
While i did start on a A2000 in 87' and loved the old girl,nothing beats a proper 32bit amiga :knuddel:

Let me know if you get tired of the 3000T and want to sell it.

Mech

[Zac67]

While i did start on a A2000 in 87' and loved the old girl,nothing beats a proper 32bit amiga :knuddel:

Truly spoken, m8!

[danbeaver]

I agree, the A2000 was like a battle tank!  She took a hell of a pounding and kept coming back.  For me the next in line is the A4000T: thin, flimsy metal case by Enlight, but with a standard AT power supply (still available new today), a large roomy interior ( just waiting to get filled with a spigetti bowl of wires, 2 video slots, and room for 5 external access drive bays and one internal drive "area" that only the brave would use (since it sits directly over the CPU card preventing cooling).  Her motherboard is simple in design with no daughter cards, easy to access -- once you get the drive cage out -- and durable; I
Don't know how many times I thought I killed her over the past 18 years.

[TjLaZer]

Make sure that the threaded standoffs that are used to secure the processor board in the Amiga 3000T computers cpu slot are the correct size. If the standoffs are the wrong size you will have problems with the cpu slot.  You can not just plug in the processor board.  It must also be screwed to the aluminum standoffs, and the standoffs are screwed to the motherboard.

Thanks, I think I need to find some better ones, and maybe some that will screw the cpu card down.  I have a Cyberstorm MKII 060 in there now.

[mechy]

Thanks, I think I need to find some better ones, and maybe some that will screw the cpu card down.  I have a Cyberstorm MKII 060 in there now.

some 3000/3000t's came with the wrong length standoffs so beware of this. If you need i can take some measurements of the proper length ones.

mech

[jsixis]

Dude, why waste your time trying to fix that POS computer?  Everyone knows that the best computer is the Amiga 2000.  (The great Doom Master even thinks so!)   It's a work horse and never has issues like this!  

My A3000T is also not working. I think it has a flakey CPU slot on it.  It's just a big hunk of metal right now.  Dead as a doornail.  I have to open it up every so often and reset the CPU card on it to get it to work.  Never have this problem with my Amiga 2000's...

 Yes, that CPU slot is a pig. To seat my 060 I had to push so hard I was worried about the motherboard breaking and wow, all those little solder joints are really small deadly pins with that much force

[nscaleworld]

IT'S ALIVE, IT'S ALIVE! I finally repaired my Amiga 3000T. There were 3 FP ZIP memory mixed in with the SC ZIP memory. I also installed a CR2032 battery holder, diode, and a new CR2032 coin battery.  I posted a picture of my work in the Amiga 3000T section of the Gallery. The computer works perfectly, and keeps the correct time and date. My Amiga 3000T is in like brand new condition, and I am so happy that she is working again. :pint:

[Zac67]

:banana:

[Speelgoedmannetje]

IT'S ALIVE, IT'S ALIVE! I finally repaired my Amiga 3000T. There were 3 FP ZIP memory mixed in with the SC ZIP memory. I also installed a CR2032 battery holder, diode, and a new CR2032 coin battery.  I posted a picture of my work in the Amiga 3000T section of the Gallery. The computer works perfectly, and keeps the correct time and date. My Amiga 3000T is in like brand new condition, and I am so happy that she is working again. :pint:

I, hereby declare you knight of the Amigan Order. Such persistence and bravery, valliantly saving such a precious piece of technology for the generations to come, can only be met with the utmost respect.
All bow!

[Damion]

WOOT! Nice job!

:pint:

[VingtTrois]

IT'S ALIVE, IT'S ALIVE! I finally repaired my Amiga 3000T. There were 3 FP ZIP memory mixed in with the SC ZIP memory. I also installed a CR2032 battery holder, diode, and a new CR2032 coin battery.  I posted a picture of my work in the Amiga 3000T section of the Gallery. The computer works perfectly, and keeps the correct time and date. My Amiga 3000T is in like brand new condition, and I am so happy that she is working again. :pint:

Perfect! Congratz!
There is no need to change the caps on A3000(T), unlike A600/A1200/A4000.