[time-nuts] 10811 Repair (was warmup / bad batch)

Rick Karlquist richard at karlquist.com
Mon Jan 22 20:11:29 EST 2007


Yes, the black wires are the thermistor.

The crystal has three wires.  Two are actually connected
to the crystal electrodes.  The third is the case.  The
case is fastened to the casting with a screw.  The only
way the casting gets an electrical ground is by way of the
crystal ground screw and ground wire to the board.
The wires are welded to the crystal, so if you want to
disconnect one of them, you have to unsolder it from the
PC board.

Rick Karlquist N6RK

Jack Hudler wrote:
> It's probably the thermistor. What model are you playing with?
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf
> Of Jason Rabel
> Sent: Monday, January 22, 2007 5:16 PM
> To: 'Discussion of precise time and frequency measurement'
> Subject: [time-nuts] 10811 Repair (was warmup / bad batch)
>
> Okay, so I've partially disassembled my 10811, I have checked most of the
> points in the manual and everything appears okay.
>
> A couple questions though. There are a pair of black wires running from
> the
> top PCB down under the board below it (I haven't removed that board yet to
> see what is underneath), what are those wires for? I probed them and there
> doesn't appear to be any power?
>
> Second, the crystal has a red, green, and blue wire. I've probed all 3 of
> those and nothing. I would of expected one to be power, unless that is
> what
> the above mentioned black wires are for.
>
> About to call it a day. tomorrow I'll finish disassembling and see what
> all
> goes where.
>
> Jason
>
>
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