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I guess by line fuse you mean mains fuse. Assuming that's correct, I'd start by looking at the usual suspects for this 'scope family: See schematic dwg 12, ckt. layout in fig. 7.21: Bridge rectifiers,

Stephen, I don't quite have the equipment to scan the pre SN B250000 11x17 pages, but I can take photos and look up specifics for you. The A9 board has many board layout pages in the book. Each one

Hello, as I had initially planned my objective was to exchange all and every "suspicious" capacitor and these selenium rectifiers. Right now I have got a basically well operational instrument, but not

I finally started to electrically restore this apparently quite early 465. The 2 pass transistors have been replaced, as well as R1549, and C1549. Also, the 15V rail was shorted to ground because of a

Rebonjour a tous, WOW Perfect, I have never seen this VERY useful référence! VIVE LE GROUPE TEKSCOPE ! Jon

Sorry, RT1110, not R1110 Raymond

According to my info, the 2465 uses a Hall-element motor and the NTC is R1696 (page 262/323 in my SM), the 2465A and 2467 use a regular fan and a regulation circuit using NTC (not marked as such)

Thank you for confirming, Dave! And I agree with you that it's bad etiquette to hi-jack a thread; no matter what was my reason it was wrong. I regret it and I apologize to all that were offended by my

Thanks to all for the great interest this has started and for more than interesting information presented. Great, great article at antiqueradios; whoever's ready for that work, good luck! Not going to

Tekwiki link: https://w140.com/tekwiki/wiki/Common_Design_Parts_Catalogs Raymond

Great info. If you can get the bearings/bushes in hand first, it might be an idea to go for it. You can always buy the magnet wire easily. The fun is getting it working like when it came originally!

Except for Instruments Used In, the info is already available in Section 15 of Common Design Parts Catalog – Semiconductors. https://w140.com/tekwiki/images/5/5e/Tektronix_Xref_sm.pdf Dave Wise

Common Design Parts Catalog 1, August 1979, "Semiconductors", lists lamps in chapter 15. Raymond

If someone does this very desirable and valuable? work, and any other for that matter, PLEASE! provide the option of receiving it in PDF form. Thanks, ??? Bruce Gentry, KA2IVY

Hello all: Seeking a cross ref of all Tektronix lamps TEK part # like 150-0090-00 spec volts, current, envelope instrument used in, industry lamp type # Would be very handy! If it does not exist

The Grayhill 71BDF30-20-2-AJN multi-way switch(Digikey GH7108-ND) is out of stock at Digikey ? Mouser has a few (16) and lead time is 16 weeks. Master Electronics, Electrosonic, and Verical also

HP did in fact resistor color code to identify some ribbon codes per the sockets, but more prominently used them to mark the small jumper cable (SMB, SMC, and some SMA cables inside the units ( ie.

Interesting...however, since my last message, I discovered three blitzed transistors in the vertical amp, Q388, Q394 and Q494. Those all could have gotten damaged by the 75V going way too high. Sean

Sean, I have not worked on a 453, but the symptoms you mention have appeared in various 465 475 and 485 scopes that I have repaired. A majority of these had issues with the beam finder switches or

I forgot to add, any signal gets squished down when moved to the extremes as well.