ITTSB.EU Blog Forum
Multimeter | Clamp meter | Insulation Resistance Tester | Panel Meter | Oscilloscopes | Test leads & Accessories | Software Updates => Test leads & accessories => Topic started by: Kiriakos GR on May 19, 2024, 06:12:42 PM
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I have a number of three U1177A in my ownership, one of them has good electrical contact issues at it slide switch.
Most of times so far, by me sliding the switch fronts and backwards a few times, it functionality gets restored.
But I would feel much safer if I knew the source ( brand \ part number ) of it so to order a new spare.
slide switch = SMD PCB mount type, a miniature three positions switch, with four legs for soldering at its side.
I am about to contact Keysight soon (Malaysia) so to discover if they have any info to share.
About our readers, if you did find a solution ? Feel free to register and share it.
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Today I do add PCB close-up photograph of U1177A.
Back in time, Agilent did well made product documentation about their modules, in order to receive FCC ID approval.
https://fccid.io/ZKMAGILENT-U1177A/Internal-Photos/Internal-photos-1491089
I did also contact Keysight customer support since past week, and I must admit that they are willing to help, and they do still trying.
But they have run in to internal problems.
Keysight customer support employ, she is unable to find any documentation so far, because such products has be classified as Not-user-repairable.
And there is no known list of any serviceable parts.
Last hope this is to be found any product design information's, that might include part-list of assembled parts.
Long story in sort, until end of May 2024, I will get a final answer due Keysight.
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My plan B, this has be activated all ready.
I am now gathering information's, of how many sources word-wide they do produce this type of slide switch.
I have find two candidates all ready, but no one this is visually identical at 100% to the part that Agilent / Keysight has use on their PCB.
In conclusion, if Keysight it did find any specific part tracing information, then I will have three choices to choose from.
Why I am insisting that much to find of what Keysight might have use?
Electric switch replacement, this is not just about moving contacts, a low cost replacement this might not offer dust or humidity protection, and this might fail sooner than expected.
I am primarily aim to perform quality level repair, than basic level repair.
Keysight retail products pricing at 2024 this is double than what it was seven years ago.
And neither their IR to Bluetooth module (entire product range), they escaped from this unreasonable pricing policy. :-X
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Long story in sort, until end of May 2024, I will get a final answer due Keysight.
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It seems that I forgot to inform about the final answer. :P
Keysight has nothing as technical information stored about these modules.
Eleven months later, I did find a listing at eBay, 2.50 Euro for the quantity of ten slide switch, along free shipping. :)
In 30~40 Days I will have the spare parts at hand.
New adventure ahead 8)
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I think that Keysight U1177A plastic case, this is sufficient as dust shield.
And I bet that you did inspect all ready, new spare parts dimensions regarding compatibility.
In conclusion, what is missing, this is the actual test, that this part works as you are expecting. :)
Keysight support team failed to find or deliver technical details?
This is not a major problem for the experts in electronics repairs. ;)
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There is always and a forth factor to worry, when making the selection of such spare parts.
And this is of how accurate it is the seller description or the illustrated photograph.
My only feeling of uncertainty, this is if I will get surface mount or thru hole mount.
I am unable to locate so far, the actual factory and the real datasheet.
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Today I had delivery of my order.
Ten slide switch's, and thanks God, all was surface mount.
I did take apart the faulty U1177A.
This micro switch was moving, but the operation was not feeling tight.
At the new micro switch, you can feel that at center position that there is a clear locking point.
I did solder the new one, ( no more than 270C at solder iron), and it worked right away. ;D 8) 8)
1) 100% successful repair.
2) Nine micro switch as spares.
3) Proofs my victory attached bellow.