Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: XDelusion on June 19, 2011, 09:37:07 PM

Title: A1200 Power Issues
Post by: XDelusion on June 19, 2011, 09:37:07 PM

Can someone explain to me why this happens?

I have used two different power packs on my A1200, and no matter what, time and time again I find my self having to pull the power out from the 1200 itself then plug it in in order to get the machine to boot.

More often than not, if I just leave it in like normal and turn on the power switch, the Amiga will power up, but will not boot until I use the above mentioned method.

I do not like having to do this, I don't have to do this with my A600, and I've tried the same two power packs on it.

Very annoying, and I think not good for the Amiga.

Any advice?

P.S. it acts the same with and without upgrades installed.

Title: Re: A1200 Power Issues
Post by: XDelusion on June 28, 2011, 04:04:10 AM

Bump diddy bump bump bump.

Title: Re: A1200 Power Issues
Post by: MelbourneBen on June 28, 2011, 04:53:08 AM

I'm not a hardware guy, but it seems like possibly a faulty capacitor issue...I'm sure somebody else might be able to shed more light on this.

Title: Re: A1200 Power Issues
Post by: Daedalus on June 28, 2011, 08:23:41 AM

Yep, I'd guess faulty capacitors alright. At least you know it's not the power pack itself... There are a handful of electrolytic capacitors at the power input area of the A1200, my money's on one of them after failing. If you are getting it repaired, it would be worth your while to get them all replaced, not just the faulty one...

Title: Re: A1200 Power Issues
Post by: a1200 on June 28, 2011, 08:48:31 AM

There are people who do cap packs for the A1200/600, but there is probably a thread with the values (or you can get them of your machine by taking a look). Capacitors don't lst forever, and you can bet your bottom dollar they never used the best on the market when they produced these machines!

Title: Re: A1200 Power Issues
Post by: XDelusion on June 28, 2011, 10:22:10 PM

Anyone know of anyone who does this sort of work within the States?

Title: A1200 Power Issues
Post by: tone007 on June 28, 2011, 10:28:00 PM

Could also be a loose/dirty power connector.

Title: Re: A1200 Power Issues
Post by: XDelusion on June 28, 2011, 10:41:56 PM

The connections appear to be fine, and I took an air compressor and blew the board down when I first got it from Chile.

Title: Re: A1200 Power Issues
Post by: TheGoose on June 28, 2011, 11:59:34 PM

Quote from: tone007;647543

Could also be a loose/dirty power connector.

That's my vote, wear and tear on those connectors and you have a very strange and unpredictable machine. I have experienced this with my 1st A1200, wound up with a rubber band looping around the connector and the machine to hold it in better.