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These are equipment accessories for which I no longer have the original test equipment, mostly from Tektronix, with a few from HP or Aglient.? Some notes: 1. accessories with the notation "NOS" are

Tom, many thanks for the info. This analyzer is like a Chinese puzzle, 53 assemblies, huge 2 volume service manual. Have read KE5FX, fine site. Analyzer PS voltages , ripple are well in spec,

I've replaced the RIFAs and the cooling fan in my 492AP. You are right; the manual is not good in this respect. That reflects the, um, "ingenuity" the designers used to fit all the connectors and

Hello again Have a working Tek SA 492, SN?B05 1984 , 2500 hrs. to check power supply for RIFA caps, lytic and tants, the. PSU remove procedure in manual is vague on the location of

I remember the Sequerra 1. A tour de force. II’m still using a Dynaco FM-5 SS tuner from the late 70’s. Plus, I have a couple of the higher end Yamaha tuners that get more airtime these

Here’s a video you may enjoy on the topic: https://youtu.be/EjV-sAW8Ylg?si=OS5NuiZatemu2AGM

My work with Dick and Sid the ex Marantz tube HiFi designers, https://tinyurl.com/Sequerra Enjoy Jon

There's the HPWiki here: https://hpwiki.mcguirescientificservices.com/ Be sure to the HP pix here: http://hparchive.com/wallpaper beautiful work Bill @ PEARL in BC

Thanks! I’ll head over there when I get time . Those old app notes contain a wealth of information, and were intended to teach users, unlike what we get today. Just like the the theory of operation

Surf over to http://hparchive.com/.? There, you'll find bunches of App Notes, Bench Briefs, manuals for lots of the OLD equipment, catalogs, and a lot of history. Cheers, DaveM

Excellent! Thanks. I happen to have a 200CD, stock, so not modified for the low distortion mode. Re: Jim Williams, one of my favorite app note authors. I used to read them from end to end gleaning

Hello again, Sid used the same HP 336, but modified it for improved noise floor, hum and THD. The generator is also critical, I think he had an HP204 also modified See Jim Williams Linear

Hi Burt, $30.00 is a good price, even if only for parts. The YT-1 printer is a very nice thing to have. These have their own problem though: The rubber pinch roller usually has a flat side or is even

Raymond, Again, thanks for your comments.? The spare one with the defective display came with a YT-1 printer that works great.? In fact, according to the print out, the spare unit works fine,

Randy, It's very simple.? The distortion products are available at the Output jacks at the lower right corner of your 334 meter.? Just use a coax/jumper wires/scope probe to connect the Output from

Hi All: a bit off topic, but saw some mention of display of distortion components by John-Paul (in thread about tube scope probes). This was done at Marsntz, and Sequerra back in the day by their

Payment received Thanks

Hi Burt, That *may* be good news but remember: The backlight has a very limited life and it's no biggie to find a replacement and put it in. Fun to play with the defective TDR though. Another

Bonjour, we recieved a fine TEK 492 SA, circa 1980s..1990s, fine condition CAL in 2007. SN B055xxxx Will post photo album. Q: Do these have the notorius SMD lytics on some PCB that leak and

Hi Raymond, and thanks for your reply.? Your comments are most helpful.? I came across another 1503C that has a defective display - a huge black area on the screen.? I don't believe tat display is