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Author Topic: Help! anything about a 3000T  (Read 4625 times)

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Offline danbeaver

Re: Help! anything about a 3000T
« on: January 16, 2014, 12:16:34 PM »
Jameco.com sells the key switch and you can Google a new PSU.  You may be able to find a copy of the original users manual online, but it won't help get it running.
 

Offline danbeaver

Re: Help! anything about a 3000T
« Reply #1 on: January 16, 2014, 11:28:32 PM »
Quote from: Oldsmobile_Mike;757350
Not trying to be snarky, but how 'bout giving the guy a link to order or a part #, or some actual useful information?  I've seen this comment before and obviously the guy is still struggling to find one.  If I knew it I'd tell what it is!  :whack:
Not trying to be snarky, but if you type "keyswitch" into the Jameco.com Product Search box, it gives you a list of all the "keyswitches" they list for sale.

I know that is difficult for many people, so:

http://www.jameco.com/webapp/wcs/stores/servlet/StoreCatalogDrillDownView?langId=-1&storeId=10001&catalogId=10001&freeText=keyswitch&search_type=jamecoall
 

Offline danbeaver

Re: Help! anything about a 3000T
« Reply #2 on: January 17, 2014, 02:58:58 AM »
Dude, you were done a long time ago...
 

Offline danbeaver

Re: Help! anything about a 3000T
« Reply #3 on: January 26, 2014, 03:11:07 AM »
I assume the Key-switch had an Open-Closed connection (Closed locks out the keyboard and mouse) and a Reset connection built in (closed causes a hardware reset). I've not run across such a combination; good luck on finding that one... But no, they have no bearing on the PSU; rather than find an exact replacement have you thought about: 1) having that one repaired (it is old school tech and a TV repair place should be able to fix it), 2) replacing the insides with a new, and smaller PSU, or 3) finding a similar "box" and grafting the wiring harness?
----------------------------------------
Amiga 3000T Power Supply Connector

This is a description of the power supply connector ON THE MOTHERBOARD of the Amiga 3000T
series.



PIN Description PIN Description
1 TICK 13 FAIL
2 -12V 14 +12V
3 -5V 15 +12V
4 GND 16 +5V USER
5 GND 17 GND
6 GND 18 GND
7 GND 19 GND
8 GND 20 GND
9 +5V 21 +5V
10 +5V 22 +5V
11 +5V 23 +5V
12 +5V 24 +5V

Taken from the Amiga 3000T Schematics in the back of every Amiga 3000T manual.

These voltages are found on standard AT power supplies. Tick is not found on modern PSU’s and a motherboard jumper (J300 on an A2000) sets it to internal

Pictures can be found here:
http://www.allpinouts.org/index.php/File:Connector_amiga3000tpower.png

http://aijaa.com/img/b/00601/5622021.jpg

http://amigakit.leamancomputing.com/catalog/product_info.php?products_id=998

http://media.bestofmicro.com/Power-Supply-Fundamentals,8-2-312626-13.jpg
« Last Edit: January 26, 2014, 03:19:20 AM by danbeaver »