On Fri, 28 Dec 2001 13:43:50 -0800, James MacPhail wrote: > >Tom wrote: > >>the server of applefritter was broken down, I'll try later >>again. Hope this schematic is the one of the 1,8 A power supply; seems to me >>that there are schematics which are really different from the real >>power-supply all over the web, and nobody cares; or nobody seems to repair >>the 1,8 A supply! > >The 1.2 A and 1.8 A power supplies are very different as you say. I believe >the 1.8 A one was supplied to Apple under contract, hence no schematic >'leaked' from Apple. > >"Usually" the failure of a Lisa power supply is typical of a switching >power supply. (Leaking high voltage capacitors, blown flyback transistor, >fried rectifier diode...) so it usually doesn't require a schematic to fix. >I suppose there are plenty other failures that cause the power supply to be >forgotten on a shelf awaiting repair, I think I have a couple of those. > >If anyone does find a schematic for this power supply, please let us all >know, I suspect many of us care. > >Otherwise, perhaps someone can volunteer to draw it? Hello to all, just to share my experience with repairing a LISA power supply.
I started as described above which means first step on my one changing the parts which seem to be broken. Next step was to find a shematic of the power supply. Which was not the one I found of the power supply I have (1.8 A / 240V) I searched the internet for companys which concentrate on repairing power supplys of any kind. I found one in Germany and had a nice short phone call to clearify what I want them to do. I shipped the power supply with the "wrong" circuit diagramm and I got it back repaired. (Which tells everybody I had to pay for it. Not to expensive by the way ..) What about to try the same ? Just a proposal from my side. Happy new year Uwe Krull Hiermit widerspreche ich der Nutzung und/oder �bermittlung meiner Daten f�r Werbezwecke und/oder f�r die Markt- und Meinungsforschung gem�� Par. 28 Abs. 3 Bundesdatenschutzgesetz FIDO preferred 2:2476/480.5 :-) / siehe unter: www.was-ist-fido.de -- LisaList is sponsored by <http://lowendmac.com/> and... Shop buy.com and save. <http://lowendmac.com/ad/buy.com.html> Support Low End Mac <http://lowendmac.com/lists/support.html> LisaList info: <http://lowendmac.com/lists/lisa.html> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/lisalist%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
