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Electronics => Repair => Topic started by: andyb on August 16, 2013, 08:01:39 pm

Title: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: andyb on August 16, 2013, 08:01:39 pm
Hey guys, I know there's been some talk about differential probes, and I managed to score a busted one off the 'bay. I tore it down and attempted a repair on my website

http://bardagjy.com/?p=1664 (http://bardagjy.com/?p=1664)

I haven't yet attempted calibration, curious to hear your suggestions.
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: ivaylo on August 17, 2013, 07:20:31 am
This looks exactly like the BK Precision PR-60 and the Agilent N2791A probes. And same 25MHz, 700V spec and everything (it ain't Agilent nor Lecroy, would BK be the OEM?  :-//). In case you find service manuals for those or something. I do have the BK precision one, may open and see if they sanded off the chip ids. Looking at yours, almost certain they did though...
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: qno on August 17, 2013, 09:18:21 am
They all come from Sapphire.

http://www.sapphire.com.tw/ (http://www.sapphire.com.tw/)



I have one for many years. They used to put the name Sapphire on the PCB.
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: andyb on August 17, 2013, 05:37:01 pm
Qno, good find! There's a calibration procedure in their service docs.

Funny that they have a flashing notice about how their products have been cloned by Pintech..
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: M. András on August 17, 2013, 05:55:49 pm
hmm wonder what is their price directly from the oem
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: plesa on August 17, 2013, 07:29:04 pm
Quote from: M. András on August 17, 2013, 05:55:49 pm
hmm wonder what is their price directly from the oem

http://www.caltestelectronics.com/ctitem/21-probe-oscilloscope-differential/CT2593-1 (http://www.caltestelectronics.com/ctitem/21-probe-oscilloscope-differential/CT2593-1)

320USD
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: Dave on August 18, 2013, 12:04:41 am
Quote from: plesa on August 17, 2013, 07:29:04 pm
Quote from: M. András on August 17, 2013, 05:55:49 pm
hmm wonder what is their price directly from the oem

http://www.caltestelectronics.com/ctitem/21-probe-oscilloscope-differential/CT2593-1 (http://www.caltestelectronics.com/ctitem/21-probe-oscilloscope-differential/CT2593-1)

320USD
:palm:
Title: Re: LeCroy 25MHz HV Differential Probe Teardown / Repair
Post by: tinhead on August 18, 2013, 12:40:09 am
Quote from: andyb on August 17, 2013, 05:37:01 pm
Funny that they have a flashing notice about how their products have been cloned by Pintech..

right, and Pintech is using as well name Pintek and DKFlex (.com). But the at least very honest - Beyond Innovation, right, copycat is beyod any innovation!