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Michael A. Terrell Michael A. Terrell is offline
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Default HP 3581A LED digits not lighting


fazeka wrote:

Hi,

I have a 3581A that was working a few years ago when I purchased it
off eBay (yes, yes, I know).

I went to power it up recently (not having powered it up for about a
year) when
I noticed that the inner two LED digits are not lighting. I'm not
talking about
missing segments, but the inner digits not working altogether:

http://img706.imageshack.us/img706/5645/3581aled.jpg

Working the frequency control I can see the lighted digits changing,
but that's
all.

Is this a repair that is straightforward? I consider myself handy.
Otherwise,
any tips/advice on where to have this thing sent for repair?

Thanks,
Chris



Here is the service & operation manual:

http://cp.literature.agilent.com/lit...3581-90012.pdf


The display circuit is on page 140.


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