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Hi, I would first check the power supply. I'm not a big fan of "the universal internet method of fixing everything", that is indiscriminately recapping stuff, but in the case of the 24xx family DSOs,

That's the purpose of the common parts catalogs of which we also got a release and are posted on TekWiki. I don't know if they all are there but they can be scanned and uploaded. Dave

The 1S1 is a fine sampler when it works. It is however what I would call "high strung". It has a way of failing in interesting and completely different ways all the time. It is also not easy to

F269 is soldered but I was able to clip onto L256. A minor amount of ripple that only changed by a few millivolts when I added a 2200uf cap across it. No change when I switch below 200ns. The 5V

Isn't that an HP 1740A 'scope? You won't see the Reply icon unless logged in. Raymond

Hi Dave, My comments embedded That's true when looking for Tek part numbers. The added value of OCR here would be *reverse* use: "What's the Tek no. of a 2N4275?" Unless the reverse list is available.

I am of the minority opinion here. The file is linear. You grab the scroll bar and scroll to where you need to be. For me it's quick. I'm just waiting for someone to post an OCR'd/searchable file. I

Thanks all for advice. Yes would love to get a 500-series TEK! A 535 (?) in particular, just before the multi-tubed Y amp version. Forgot to mention I have TEK TAS465; HP1640A and Hantek 200MHz

Hey Vince, My bet would be that if you go back to the 5VD supply, you'll find that C455 and/or C262 are shot. CR354 is also a suspect, but the bulk caps on the 5VD supply are the primaries. If you can

Hi H?kan, Thanks for allowing me to look into your file. I don't think both are the same scan. I'll PM you re. this. Re. bookmarking: You're using it to create a TOC, which can be as limited or

Yep, I have a 2430A and a couple of 11402s. I used the 2430A. I checked the + and -5 and the + and -15 volt rails. Sure enough, the +5 volt rail drops exactly 1 volt while it's happening. I'm

Got it, H?kan. Raymond

Interesting. I'd look at the power supplies, should be easy enough to see what's happening as this is reproducible. Do you have a second digital or storage scope to look at what's happening on the

Yes absolutely, it's the same one. Off course I had to unlock it first but reference to VintageTek is still s?there. I use an old Adobe Acrobat 9 Pro and bookmarking isn't that much work, it may have

Hi H?kan, The 151 file I downloaded was 243 MB and locked. Was yours smaller or did you reduce the size that much? And AFAIK bookmarking is done manually. With the file being 762 pages that's a lot

It might be possible to power a 1S1 from an IO-14 scope but IMO it's deep into "not worth the effort" territory. Do it right and get a Tek mainframe. The 1S1 is a fine sampling system but be aware

I didn't make a complete new version, I just OCR'ed and bookmarked the one available on the Wiki. /H?kan

I have repaired non-styrene plastic with a UV-cured resin called Bondic. The kit comes with a tube of the resin and a blunt needle-type application tip built-in. The opposite end includes a UV LED

234 MB seems quite big for the file so I'm not surprised yours is smaller. Unfortunately, the one available contains so much "detail" that much automatic compression doesn't seem likely. As I

FYI, the 151 version I made for my own use, as mentioned in a previous post, is about 40 Mb. It is OCR'ed (not so good) and bookmarked every 50 P/N. Personally I prefer bookmarking over searching the