Date   : Wed, 06 Dec 2006 11:22:18 -0000 (GMT)
From   : splodge@... (Richard Gellman)
Subject: [OT-ish] A3020 won't turn on

Hi,

> On a linear psu with a dried out cap, if you remove the load you'll
> normally
> see something close to the expected voltage, but this will drop and
> there'll
> be AC ripple present as soon as you reconnect the load. Whilst the
> rectifier
> diodes are non conductive (as they will be for part of an AC cycle) it's
> the
> reservoir capacitor which keeps the output voltage present by supplying
> energy stored in the capacitor.

Fair enough. Note that I can't "remove" the load, as they are both on the
same circuit board (as you are no doubt aware).. :)

> I'll probably not sleep until I've got this straight in my head :-) What's
> the number printed on the top of the integrated cicuit, near to the toroid
> ?

Unfortunately, I'm at work at present and the machine is at home. I'll
find out the part number for you later on.

-- Richard