23 February 2015, 10:54 | #1 |
Registered User
Join Date: Jan 2015
Location: London
Posts: 12
|
Green blinking Power Light A1200 with A500 Type 2 PSU
Hi
I recently purchased an A500 PSU (lightweight, type 2 4.5A) to use with my A1200 with ACA 1233/40 accelerator board, as I heard the standard A1200 PSU can struggle with anything other than a stock machine. It worked well for a few hours then the A1200 shut down, showing a constantly blinking green power light. If I switch the PSU off and on again I get the blinking light and no boot up. The A1200 still works perfectly with my standard A1200 PSU. I'm assuming the A500 PSU is faulty but I wouldn't know how to check it, although I do have a multimeter. Any ideas on what is happening here? Thanks |
23 February 2015, 10:57 | #2 |
Registered User
Join Date: May 2010
Location: Helsinki, Finland
Posts: 1,341
|
Scroll down about halfway down and you'll find the pinout of the PSU and what voltages should be where: http://www.ianstedman.co.uk/Amiga/am..._supplies.html
Other useful info there too. It's possible though that you'll still see the correct voltages, and it's only when you add a load (the Amiga) to the PSU, it will fail. |
23 February 2015, 11:01 | #3 |
Professional slacker!
|
You're better off using a converted ATX PSU, A500 PSU are getting pretty old now! If you want to keep it looking genuine you can retro fit the ATX PSU innards inside the A500 PSU chassis
|
23 February 2015, 11:37 | #4 | |
Registered User
Join Date: Jan 2015
Location: London
Posts: 12
|
Quote:
Thanks |
|
23 February 2015, 13:38 | #5 |
Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
|
60 watts and over should ok,itll only use what it needs.
most of the electronics in these are 5 volts |
23 February 2015, 13:51 | #6 |
Registered User
Join Date: May 2013
Location: UK
Age: 44
Posts: 351
|
You could look into a Pico PSU or similar, its more suited to the lower power requirements - some guys build the PSU right into the Amiga and just feed 12v dc into it, not sure what they do about the lack of -12v though?
|
23 February 2015, 16:28 | #7 |
Registered User
Join Date: Jan 2015
Location: London
Posts: 12
|
I have just seen that Amigakit sell a 300W modded ATX for £29. However, I'd like to save the original. Is it possible to get them repaired/serviced? What usually fails? I have tested the voltages (PSU not loaded) and they are all over the place. +12v=17V, -12V=-15V, +5V=1V. These all fluctuate a lot but
it's obvious it ain't working properly! |
23 February 2015, 16:49 | #8 |
Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
|
i could have a look at it,is it a heavy one or light?
|
23 February 2015, 17:17 | #9 |
Registered User
Join Date: Jan 2015
Location: London
Posts: 12
|
It's the light one (type 2, 4.5A). Thanks for the offer Roy. I take it you know your way around these things then?!
|
23 February 2015, 18:43 | #10 |
Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
|
yeah,depends whats wrong with it.
some things cant be repaired some can.its switchmode by the way. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Recapping A500 + Light Brick PSU | marty | support.Hardware | 10 | 10 January 2017 06:34 |
Help with A500+ does not boot, white screen, blinking power led | amigo-mexicano | support.Hardware | 5 | 13 February 2015 09:15 |
Amiga 500 PSU ref P.312503 WEST-GERMANY (Light PSU) | dlfrsilver | support.Hardware | 0 | 18 November 2014 00:54 |
Bought Amiga 500+ and will not boot power light flashing green | kernoman | support.Hardware | 47 | 30 August 2009 21:03 |
Can an A500 or 600 PSU power an A590? | Merlin | Hardware mods | 19 | 23 September 2008 10:36 |
|
|