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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to sci.electronics.equipment,sci.electronics.repair
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HP 3581A LED digits not lighting
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 |
#2
Posted to sci.electronics.equipment,sci.electronics.repair
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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 Can't be much.. most likely a cable header connection. |
#3
Posted to sci.electronics.equipment,sci.electronics.repair
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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. -- Greed is the root of all eBay. |
#4
Posted to sci.electronics.equipment,sci.electronics.repair
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HP 3581A LED digits not lighting
On Dec 28, 7:05*am, "Michael A. Terrell"
wrote: 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. -- Greed is the root of all eBay.- Hide quoted text - - Show quoted text - 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. |
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