Hi Roman, I think I may take your advice ... also,
I may look at some of those socketed LED re-
placements (these are currently socketed
bayonet-based bulbs - type #44 I think). Most of
these bulbs first 'silverize' their interiors
(reducing their light output substantially)
then they fail a year later or so!

This will be the fourth 'set' (fully 'bulbing' this
dude takes 5 bulbs) that I have put in since the
late 1970's since I started keeping records on when
bulbs were changed out!

RF Jim

----- Original Message -----
From: "Roman Black" <fastvid@EZY.NET.AU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, November 06, 2002 12:29 AM
Subject: Re: [EE]: Power supply rework (again)


> Jim wrote:
> >
> > Audio gear - Heath AR-1500A that still runs hours a
> > day (although it needs another change-out of pilot
> > lamps AGAIN! A set, it turnms out, lasts about 2 1/2
> > years in this service cycle with the last bulb left
> > standing then out at about the 3 year mark) ...
>
>
> Hi Jim, we used to fix a lot of audio bulbs,
> try replacing them with 3v higher rated bulbs,
> ie if driven by 9v (common) use 12v bulbs.
> The axial bulbs are more reliable than the radial
> type and if they are driven from AC try a series
> diode and a cap to make it DC, and rate the bulbs
> 3v higher again than whatever DC voltage you got.
> Most TV repair shops will have a wide range of
> dial bulbs in varying voltages and sizes. :o)
> -Roman
>

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