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AuthorTopic: A3000D Dead Power Supply  (Read 53 times)

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Offline Erol

A3000D Dead Power Supply
« on: February 06, 2015, 02:28:11 PM »
Does anyone know if these can be repaired?
ive seen a few threads on replacing with a PC power supply.
 

Offline don27dog

Re: A3000D Dead Power Supply
« Reply #1 on: February 06, 2015, 02:37:17 PM »
3000D is super easy. http://amigakit.leamancomputing.com/catalog/product_info.php?products_id=1164

I wish they would make one of these adapters for my 3000T
Amiga 4000D Cyberstorm PPC 150Mhz, 68060 50 Mhz, 128Meg Ram, IndivisionAGA, Deneb USB Controller, Zorram 256, Os3.9/Os4.0 Classic
Amiga 3000T Warp Engine 4040, Elbox FastATA Controller, Progressive Perpherals ProRam3000 64Meg, Mediator, VoodooIII, Os3.9
 

Offline Erol

Re: A3000D Dead Power Supply
« Reply #2 on: February 06, 2015, 04:34:22 PM »
Quote from: don27dog;783184
3000D is super easy. http://amigakit.leamancomputing.com/catalog/product_info.php?products_id=1164

I wish they would make one of these adapters for my 3000T


I was considering that route with AmigaKit ATX adaptor, but which ATX power supply size wise will fit the Amiga?  Mini ATX?   and what about the power switch?
 

Offline SpeedGeek

Re: A3000D Dead Power Supply
« Reply #3 on: February 06, 2015, 05:40:55 PM »
Quote from: Erol;783183
Does anyone know if these can be repaired?
ive seen a few threads on replacing with a PC power supply.

 I repaired my A3000 PSU a few years ago, but it's probably not something for someone to attempt without previous repair experience. ;)
 

Offline Oldsmobile_Mike

Re: A3000D Dead Power Supply
« Reply #4 on: February 06, 2015, 06:27:07 PM »
Quote from: Erol;783190
I was considering that route with AmigaKit ATX adaptor, but which ATX power supply size wise will fit the Amiga?  Mini ATX?   and what about the power switch?

I believe there was just a thread on this a couple months ago.  Someone made a recommendation on a PSU that was supposed to fit.  Have you searched the forums?   Sorry, that's all I've got!  Good luck!
Amiga 500: 2MB Chip|16MB Fast|30MHz 68030+68882|3.9|Indivision ECS|GVP A500HD+|Mechware card reader + 8GB CF|Cocolino|SCSI DVD-RAM
Amiga 2000: 2MB Chip|136MB Fast|50MHz 68060|3.9|Indivision ECS + GVP Spectrum|Mechware card reader + 8GB CF|AD516|X-Surf 100|RapidRoad|Cocolino|SCSI CD-RW
 Amiga videos and other misc. stuff at https://www.youtube.com/CompTechMike/videos
 

Offline curtis

Re: A3000D Dead Power Supply
« Reply #5 on: February 06, 2015, 07:07:52 PM »
This is the thread you're looking for.

http://www.amiga.org/forums/showthread.php?t=68541

BTW, it worked like a charm!
Outside a dog, a book is a man\'s best friend. Inside a dog it\'s too dark to read! Groucho Marx

Curtis McCain

http://pages.suddenlink.net/curtismc/
 

Offline Tenacious

Re: A3000D Dead Power Supply
« Reply #6 on: February 06, 2015, 07:12:27 PM »
Quote from: Erol;783190
I was considering that route with AmigaKit ATX adaptor, but which ATX power supply size wise will fit the Amiga?  Mini ATX?   and what about the power switch?

IIRC, the A3000D PS has an extra signal not common to other power supplies, even most of the other Amigas don't have it.  It is a 60 Hz AC signal (probably low voltage) that I believe was used for timing of the native video on the motherboard (maybe the FF?).  I can't remember.  

Naturally, the Amigas date to a time before the 3.3 VDC power rail.

I imagine Amigakit is on top of all of this with their adapter.
« Last Edit: February 06, 2015, 07:18:10 PM by Tenacious »
 

Offline Oldsmobile_Mike

Re: A3000D Dead Power Supply
« Reply #7 on: February 06, 2015, 07:24:08 PM »
Amiga 500: 2MB Chip|16MB Fast|30MHz 68030+68882|3.9|Indivision ECS|GVP A500HD+|Mechware card reader + 8GB CF|Cocolino|SCSI DVD-RAM
Amiga 2000: 2MB Chip|136MB Fast|50MHz 68060|3.9|Indivision ECS + GVP Spectrum|Mechware card reader + 8GB CF|AD516|X-Surf 100|RapidRoad|Cocolino|SCSI CD-RW
 Amiga videos and other misc. stuff at https://www.youtube.com/CompTechMike/videos
 

Offline Erol

Re: A3000D Dead Power Supply
« Reply #8 on: February 06, 2015, 08:18:12 PM »
Quote from: curtis;783200
This is the thread you're looking for.

http://www.amiga.org/forums/showthread.php?t=68541

BTW, it worked like a charm!


Thank you all for your help.

I will certainly look at using an miniatx power supply.   seems the most wise solution.  Big Thank you!
 

Offline SpeedGeek

Re: A3000D Dead Power Supply
« Reply #9 on: February 06, 2015, 08:24:19 PM »
Quote from: Tenacious;783201
IIRC, the A3000D PS has an extra signal not common to other power supplies, even most of the other Amigas don't have it.  It is a 60 Hz AC signal (probably low voltage) that I believe was used for timing of the native video on the motherboard (maybe the FF?).  I can't remember.  

Naturally, the Amigas date to a time before the 3.3 VDC power rail.

I imagine Amigakit is on top of all of this with their adapter.

AFAIK all Amiga PSUs (except for the A4000 PSU) provide a 50/60 Hz Tick signal. However, most (but not all) Amiga mobos have a jumper which selects the Tick or Video blank signal for the system (CIA) timer.

So you can use a generic PSU with these jumper select mobos. The catch is when you switch from NTSC/PAL or to exotic video modes like Super72 then your system timing gets messed up. Also, you can't disable the Video signal with RTG software.
« Last Edit: February 06, 2015, 08:29:15 PM by SpeedGeek »
 

Offline magnetic

Re: A3000D Dead Power Supply
« Reply #10 on: February 07, 2015, 02:38:29 AM »
FYI the A3000 has a jumper to generate TICK. Ive seen the Amigakit a3k adaptor withmicro atx psu working nicely !
bPlan Pegasos2 G4@1ghz
Quad Boot:Reg. MorphOS | OS4.1 U4 |Ubuntu GNU-Linux | MacOS X

Amiga 2000 Rom Switcher w/ 3.1 + 1.3 | HardFrame SCSI | CBM Ram board| A Squared LIVE! 2000 | Vlab Motion | Firecracker 24 gfx

Commodore CDTV: 68010 | ECS | 9mb Ram | SCSI -TV | 3.9 Rom | Developer EPROMs
 

Offline Erol

Re: A3000D Dead Power Supply
« Reply #11 on: March 07, 2015, 05:10:00 PM »
Well I got A3000D  up and running.  thanks for all that helped, and the TICK advice was very helpfull.
I've even managed to install a nice new battery and clean the motherboard with some pcb cleaner.  Once I have the powers supply installed I may upload more pics.

Next job repairing A2000 from a leaked battery..  luckily i think she is repairable.
 

Offline Erol

Re: A3000D Dead Power Supply
« Reply #12 on: March 07, 2015, 05:59:20 PM »
must be my lucky day,  changed the fuse inside the original power supply 1amp and its now working..  :)    I now stuck on to use original or use AtX duel voltage power supply.
 

Offline danbeaver

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Re: A3000D Dead Power Supply
« Reply #13 on: March 07, 2015, 11:21:56 PM »
Yeah...

I usually go check the fuse first.
 

Offline magnetic

Re: A3000D Dead Power Supply
« Reply #14 on: March 07, 2015, 11:27:04 PM »
Id use the original psu until it fails.. as the a3k case is designed for it specifically. Though like i said  a mini itx or micro atx sff psu fits nicely as well but leaves a square hole in the back.
bPlan Pegasos2 G4@1ghz
Quad Boot:Reg. MorphOS | OS4.1 U4 |Ubuntu GNU-Linux | MacOS X

Amiga 2000 Rom Switcher w/ 3.1 + 1.3 | HardFrame SCSI | CBM Ram board| A Squared LIVE! 2000 | Vlab Motion | Firecracker 24 gfx

Commodore CDTV: 68010 | ECS | 9mb Ram | SCSI -TV | 3.9 Rom | Developer EPROMs