Re: AppleColor Composite Caps

[Polymorph <polymorph69@hotmail.com>]

On May 29, 12:46 am, David Wilson <mcs6...@gmail.com> wrote:
> On May 28, 11:34 pm, srk...@gmail.com wrote:
>
> > Ive never actually had any problems with the X1's/X2's. I dont think
> > Id replace them unless there was a pretty good reason - they are
> > pretty expensive too. Only the electrolytics usually. Most brands of
> > X1/X2's are self healing, so if thats effective, it should be a long
> > life part.
>
> I will take a picture of the two failed parts from my PSUs - one split
> down the side and the other popped its top. In my case, in the IIe the
> smaller 0.1uF cap failed while in the IIgs the larger 0.47uF did. The
> smaller cap in the IIgs PSU was not an X2 rated part but a Y rated one
> which I was unable to locate so I left it alone. When the (platinum)
> IIe went bang I replaced both caps.
>
> The replacements are yellow plastic and were not very expensive (less
> than A$5 each) so I bought a few.
>
> I wonder if you have less trouble in 120VAC countries than in 240VAC
> ones? The voltage ratings seem very close to the line voltage here.

I can concur with David, I've had to replace these bypass caps on two
separate //e power supplies. I also had another one die recently - not
the one directly over the mains line (where the power cord comes in -
I'd already replaced this a couple of years ago), but rather the one
soldered onto the circuit board. It was IIRC, the same capacitor used
as the one directly over the mains line - it certainly had the same
smell...  ;-)

Cheers,
Mike