Also, the following: http://www.sphere.bc.ca/test/ is one of the best spare parts sites for test equipment that I know of. they're good folks. Don
Jim Palfreyman > Hi all, > > The transistor in my unit (not a 4B model!) is 1854-0015. Lots of those. > > If someone can confirm this is identical to 1854-0003 I'll use it. > Otherwise I may have to take up one of the very kind offers! > > On the 2N1701 - it has to be in a T08 package. This transistor sits in > a special heat sink that is bolted to the oven wall. So unfortunately > I can't substitute. > > Regards, > > Jim > > > 2009/8/11 ron hunt <resolve...@hotmail.com>: >> >> Hi!I Have The Exact 1854-0003 HP Part.If You Still Need It I Will Be >> Happy To Send It No Charge.I May Need Some Help Some Day.Let Me Know >> Your Shipping Address. >> >>> Date: Sun, 9 Aug 2009 19:15:33 -0600 >>> From: d...@montana.com >>> To: time-nuts@febo.com >>> Subject: Re: [time-nuts] HP 106B quartz frequency standard...the story >>> >>> carefully crack open the old to8 can to expose the leads internally, >>> strip >>> out the old transistor and cobble the to220 on top with appropriate >>> leads. >>> The to220 should fit under one of the old mounting screws? one >>> direction >>> will give the base and emitter connections properly. >>> Don >>> Jim Palfreyman >>> > Thanks for that! - I do have a number of the 5254L units and one of >>> > them is now being eyed off for organ donation. So thanks to all >>> offers >>> > for the 1854-0003. >>> > >>> > The 2N1701 in a T08 is my next quest... >>> > >>> > 2009/8/10 Dave M <masond...@comcast.net>: >>> >>> Hi all, >>> >>> >>> >>> Latest update. >>> >>> >>> >>> With some help and phone calls from Bill the fault seems to have >>> been >>> >>> isolated. I have removed Q11 from inside the oven and it is cactus. >>> Q9 >>> >>> is also very suspect so I'm going to replace that for good measure. >>> >>> >>> >>> Q9 is a 2N1701 in a T08 package. Thanks to various people I should >>> be >>> >>> able to track one down. Q11 is marked as 1854-0003 and that's an HP >>> >>> internal number and all I know. Might have to substitute that one. >>> >>> >>> >>> After all this I have some quality photos and can knock up some >>> good >>> >>> descriptions of the repairs and the 106B internals if anyone is >>> >>> interested. Any websites hanging around that want to take what I >>> have? >>> >>> >>> >>> Regards and thanks to all! >>> >>> >>> >>> Jim Palfreyman >>> >>> >>> >>> >>> >> >>> >> >>> >> Jim, the 1854-0003 is a pretty common HP part in older eqpt. If you >>> >> have >>> >> junked 5245L counter handy, it's full of them, especially in the >>> decade >>> >> counter PCBs. If you don't have one handy, I have an assembly here >>> with >>> >> 8 >>> >> of them on it. If you like, I can send it right away (if you're >>> outside >>> >> the >>> >> USA, you pay postage). >>> >> >>> >> Dave M >>> >> masondg44 at comcast dot net >>> >> >>> >> I went to a bookstore and asked the saleswoman, "Where's the >>> >> self-help section?" She said if she told me, it would defeat the >>> >> purpose. >>> >> >>> >> >>> >> >>> >> >>> >> >>> >> _______________________________________________ >>> >> time-nuts mailing list -- time-nuts@febo.com >>> >> To unsubscribe, go to >>> >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> >> and follow the instructions there. >>> >> >>> > >>> > _______________________________________________ >>> > time-nuts mailing list -- time-nuts@febo.com >>> > To unsubscribe, go to >>> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> > and follow the instructions there. >>> > >>> >>> >>> -- >>> Dr. Don Latham AJ7LL >>> Six Mile Systems LLP >>> 17850 Six Mile Road >>> POB 134 >>> Huson, MT, 59846 >>> VOX 406-626-4304 >>> www.lightningforensics.com >>> www.sixmilesystems.com >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> _________________________________________________________________ >> Get free photo software from Windows Live >> http://www.windowslive.com/online/photos?ocid=PID23393::T:WLMTAGL:ON:WL:en-US:SI_PH_software:082009 >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.