Rainbow 100 PSU capacitor list

[Warner Losh]

On Fri, Mar 1, 2019 at 2:56 PM Alan Perry via cctech <cctech at classiccmp.org>
wrote:

> Initially it booted and ran for a while until I switched it off.
>
> The last time it responded to the power switched, components powered up
> and the FDD started operating. Then suddenly everything stopped like the
> plug had been pulled.
>
> Now it does nothing (apparent) when it is switched on.
>

The rainbow has a number of LEDs in the back that it frobs while booting...
Do any of them light up?

Warner


> alan
>
> > On Mar 1, 2019, at 1:44 PM, dwight <dkelvey at hotmail.com> wrote:
> >
> > Maybe I need a little clearification.
> > When you turn the switches off, it boots?
> > Dwight
> >
> >
> > From: cctech <cctech-bounces at classiccmp.org> on behalf of Alan Perry
> via cctech <cctech at classiccmp.org>
> > Sent: Friday, March 1, 2019 1:35 PM
> > To: Ethan Dicks
> > Cc: General Discussion: On-Topic Posts
> > Subject: Re: Rainbow 100 PSU capacitor list
> >
> >
> >
> > > On Mar 1, 2019, at 7:52 AM, Ethan Dicks <ethan.dicks at gmail.com> wrote:
> > >
> > > On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
> > > <cctech at classiccmp.org> wrote:
> > >> Hi,
> > >>
> > >> I think that I need to re-cap the power supply in a Rainbow 100. Does
> > >> anyone here know if anyone has put together a list of capacitors used
> in
> > >> the power supply that I can use to order parts?
> > >
> > > I don't have a list (I just got a pair of Rainbows last month) but
> > > given the era of manufacture, I'd be looking for Rifa EMI filter caps
> > > by the power inlet.  I've had those fail in BA23 cabinets and in a
> > > Commodore D9060 hard drive, and a TRS-80 Model 4.
> >
> > Thanks. When I first got the Rainbow, I asked here about what to look
> for before powering it up and was told about Rifa caps and what look/listen
> for.
> >
> > I eventually threw caution to the wind and just powered it up and I ran
> it for 15-20 minutes. The PVA in the monitor was really cloudy, so I didn’t
> use the system anymore until I removed the PVA over Christmas. I was
> testing everything after that and the system was booting up when the power
> all switched off like it had been unplugged.
> >
> > alan
> >
> >
> > >
> > > This is totally different than failing/bulging electrolytics.
> > >
> > > -ethan
> >
>