W2 problems

[STEPHEN BUNTING]

Hi gang,

I have a w2 wattmeter that worked well when it was first built and has
been in storage for the last few months. Now, when I apply DC the start
up calibration routine runs just fine and the meter is ready to go.
However, when I apply RF several LEDs light as expected but within a
second or so the meter turns itself off. I have tested with a dummy load
rather than an antenna and different frequencies and at RF power levels
all with the same result. Once the meter is off I can restart it by
simply pressing the power button again.

Any idea what has gone wrong and how I can fix this issue?
73
Steve
M0BPQ
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[Brian Broggie-2]

Hi, Steve!

Obviously the symptoms you are describing are very unusual.  The W2
should never shut off by itself.  I suggest trying to run the W2 with a
different power supply.  It kinda sounds like the present power
connection is getting overloaded.

73,
Brian, W6FVI


On 10/18/2011 11:36 AM, Steve Bunting wrote:

> Hi gang,
>
> I have a w2 wattmeter that worked well when it was first built and has
> been in storage for the last few months. Now, when I apply DC the start
> up calibration routine runs just fine and the meter is ready to go.
> However, when I apply RF several LEDs light as expected but within a
> second or so the meter turns itself off. I have tested with a dummy load
> rather than an antenna and different frequencies and at RF power levels
> all with the same result. Once the meter is off I can restart it by
> simply pressing the power button again.
>
> Any idea what has gone wrong and how I can fix this issue?
> 73
> Steve
> M0BPQ
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

... [show rest of quote]

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