English Amiga Board


Go Back   English Amiga Board > Misc > MarketPlace

 
 
Thread Tools
Old 19 October 2011, 21:29   #1
Calhoun
 
Posts: n/a
Wanted! A3000 PSU

Hi amiga amigo's

I am looking for a A3000D Powersupply. mine is starting to sing to me and shuts off after 1 minute

Amiga Forever!!!!!
 
Old 20 October 2011, 12:36   #2
Loedown
Precious & fragile things

 
Join Date: Feb 2009
Location: Victoria, Australia
Posts: 1,946
I reckon you'd struggle to get anyone to part with an A3000 PSU, rather a rarish beast nowadays. It may be better to consider an adapter cable and ATX supply.
Loedown is offline  
Old 20 October 2011, 13:25   #3
Calhoun
 
Posts: n/a
yeah I know
But since this is my only 3000 I try to keep it as original as possible.
 
Old 21 October 2011, 09:33   #4
roy bates
Registered User
 
Join Date: Apr 2011
Location: birmingham
Age: 51
Posts: 2,824
have you checked inside the psu to see if the two large capacitors are bulging or leaking.
roy bates is offline  
Old 21 October 2011, 14:22   #5
Calhoun
 
Posts: n/a
yup. no leakage or bulging. rather had the psu blew up on me. then atleast you know what to replace hehe
 
Old 21 October 2011, 17:05   #6
8bitbubsy
Registered User

8bitbubsy's Avatar
 
Join Date: Sep 2009
Location: Norway
Posts: 1,355
If you're willing to try and fix it (and got the skills), check the start-up resistors, step-up transformer and the switching transistors. Also check stuff like the bridge rectifier and the AC filter cheramic capacitors. Check for any burnt area on both sides of the PCB, if you find any then you might want to take a look at that specific component, and trace to an eventual problem if you follow its traces.
Oh, and the huge DC caps might be dried inside even though they look perfect --you should get an ESR meter (with capacitance checking) and check them. It's also a very handy tool for future electronics repair!

Not sure if this one is the same type as yours, but this reference map of one of my A3000 PSUs might help:
http://16-bits.org/i/psu/reference_map_primary.jpg

Last edited by 8bitbubsy; 21 October 2011 at 17:11.
8bitbubsy is offline  
 


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
A3000 PSU diagnostics blueprint support.Hardware 1 25 January 2013 12:41
Need help healing an A3000 PSU 8bitbubsy support.Hardware 25 03 July 2011 10:53
PSU Connectors A3000 & A4000 Cosmos MarketPlace 9 30 August 2010 22:13
Psu A3000 Cosmos request.Other 5 01 March 2010 12:56
A3000 PSU problem whiteb support.Hardware 9 03 February 2003 09:18

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 17:34.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Page generated in 0.06535 seconds with 13 queries