Because the NCL runs close to 14V and the bulbs rapidly burn out. You
can replace with 18V versions.
Carl
KM1H
----- Original Message -----
From: "Frank T Brady" <franktbrady@comcast.net>
To: <amps@contesting.com>
Sent: Wednesday, January 07, 2009 5:13 PM
Subject: [Amps] NCL-2000 meter lamps
> Hello,
> I recently purchased a ncl-2000 as my first amp.
> The meter backlight bulbs were dimly glowing just brightly enough to
> see
> the filaments.
> I checked the bulbs and they were not the type shown in the schematic.
> I bought the 'proper' bulbs and they had the same problem.
> I (finally) looked at the wiring and, rather than being wired in
> parallel across the filament winding (like the "on" lamp) the bulbs
> are
> wired in series between the ac voltage source and ground.
>
> Before I start rewiring, I thought I'd see if anyone else has seen or
> hear of such a mod/kludge or know of any reason why someone would do
> this?
>
> Thanks and 73,
> Frank w0ecs
>
>
>
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>
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