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Chris I would not bother with diodes like 1N4148 . I have successfully repaired S1,S3A and to my surprise even an S6 sampling head using HSMS8202 diodes from HP/Avago . These are cheap and easily

Thank you, I'll bear that in mind. I've now made an extender cable for the sampling heads so I can investigate what's going on inside them. Stupid idea: if I get to the point that I think my sampling

Given the concentration of the local electronics industry in Melbourn, UK, I'm quite sure it's seen more 7k plugins than most villages ever do... Chris

-A similar issue has been reported some time ago, have you seen this post: /g/TekScopes/message/150772 If you could check the points from that post I guess we'll know more... Is the

Hi Chris, I wrote "You probably will see a Signal Out level which is drifting away during the retrace period, followed by an immense jump which needs several samples when the loop gain is far from

Could it be a Ta cap thats in the process of dying?? I have 7L5, but have never had this issue (yet). -Dave To: [email protected] Sent: Thursday, December 13, 2018 10:59 AM Subject: [TekScopes] 7L5

Hi Fred, A similar issue has been reported some time ago, have you seen this post: /g/TekScopes/message/150772 If you could check the points from that post I guess we'll know more...

Or the original Melbourne from which all the others are named - in Cambridgeshire UK. Craig

My heart was "fluttering" as I thought that all these lovely 7000 series modules were in Melbourne and for sale .... then Fl registered in my brain ..... Florida, USA .... ..... #@$%&* ...... :)

Bob, I can't point you to anything more than a couple of ideas on finding the data for the Seco 250 tester. I found

Hi, while waiting for spare parts to repair my 7854, I acquired a 7L5 module. While working fine, it dims the mainframe (I tried 7834, 7854, and 7904A) enormously. I inserted the the 7L5 into right

Unless you have spent the last 15 years testing this stuff you can't possibly know the operational status of all of it except the scope you mention.? Is it fair to assume that the rest of it is

Hi Chris, The disturbance at the start of the trace can be easily explained. During "retrace", your S2 stops sampling, though the 7T11 Pulse Out works continuously. So during retrace leakage in the

I can check what variant of the 7A13 I have in a moment. Located in melbourne Fl. Happy to ship the plug in modules if needed. wrote:

Devin 1) I'd like to talk about the AM503 IF you have the probe that goes with it 2) there are two versions of the 7A13 the early with a mechanical read out and later with a LED readout display ...

Hello again. Spent some time here taking inventory, Here is a partial listing of the plug in modules that I have Availible. The is some more in storage, once i get over there I will update the

Used to live in greater Boston as well, gotta be dozens of 7000 CAL fixtures in captivity up there. Probably the second largest population of geeks outside of silicon valley Dave

I finally found out what is causing all my errorneous readings on my 7L12: the W1 assembly (PN 175-1317-00) has an intermittent contact; now where to find a replacement? I draw a blank at Qservice and

Hi Dave... thanks so much for thinking of that offer. My Florida days (Miami) are over. I'm in the greater Boston area now.

Thank you, that's helpful. I shall look at the strobe pulses and see what I can see. I'm in the process of cobbling together a sampling head extender (another of my pastime