HP 3581A LED digits not lighting

Dec 27, 2009 3 Replies
F

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:



formatting link



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


Vote
Twitter Facebook LinkedIn
J

Can't be much.. most likely a cable header connection.

Vote
Twitter Facebook LinkedIn
M

Here is the service & operation manual:

formatting link

The display circuit is on page 140.

Greed is the root of all eBay.
Vote
Twitter Facebook LinkedIn
H

First suspect is the cable connecting the display to the main board. Try moving the cabke in and out slightly at each end. Then dig into the 170 pages of the manual.

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required