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============================================================= Hfe - Beta. Rolynn Tek Bvtn and Sunset 1966-1971

I've had to remove that on a 475; I expect the 465 is similar. The four 1/4 inch nuts that secure it to the front panel are a pig: there’s no way a spanner can reach them. Fortunately extension

AFAIR, at least the vertical board must be disconnected (several peltola connectors and the like) and removed. In order to do that, the front BNC's for CH1 and CH2 have to be removed as well as

Hmmm less than I expected, but difficult to say if this could be the problem. I once more checked an original 151-0140-00 and an "arbitrary" 2N3055 (date 1973). Low currents DC gain was 100 for the

Bill 1) (C) dates have no real bearing on date of manufacture they can be years apart or even decades apart. 2) Unless you know or have access to the repair history for your unit, anything is possible

Disagree ?

Perhaps more than you might think - and they don't even have to be unused. Look at the fleabay prices for "mustard capacitors" and "germanium transistor"

I believe microwave oven HV diodes will be too slow to use for the HV diodes in a scope. The scope HV inverter runs at 20 kHz or more. The oven diodes are used at 60 Hz and their reverse recovery time

I decided to dig into an early 453. Interestingly it does not match the schematics for the 453 or the 453A - some boards seem closer to the A, some to the earlier one - for example the Z axis board is

Hi Jim, Thanks but this seller is pretty typical of those selling manuals. This particular Spectracom manual has been unobtanium for over 10 years that I am aware of. Periodically I search the

Dennis there is a guy selling manuals on Ebay that has aquirred a large inventory of older Tek and HP manuals and he might have what you need his user name is tigertechus he even had some manuals for

You have the one on hand are Chinese type CRT , may not direct replacement . Tony To: [email protected] Sent: Monday, June 11, 2018 10:56 AM Subject: Re: [TekScopes] OT: AT5005 spectrum analyzer

This is also off topic I am a new comer to the site and also getting into Tek o'scopes have picked up some dead 400 scopes to play with. Found this site by browsing for info, manuals etc. and i have

Well, the seller seems a bit full of himself and full of hyperbole: "...while I’d wager every last chip is good, ..., they are sold as-is." In other words, "I'll engage in a bit of puffery and

I'm wondering if anyone has a suggestion for replacement parts sources besides looking on eBay. I received four Tek P6131 probes all in the same condition with a 2432 I purchased. The BNC

Hi Ed, Yes, if you connect all three windings together you do get about 67VAC (25VAC + 25VAC + 17VAC) but that is not 110VAC by any stretch. You have an intriguing idea if the plugin did actually plug

The HM5010 manual schematics shows the CRT is D14-364, which googles out to be very common, and Hameg uses it in some of there other products. Ed

Beer goggles? ST

Thanks Tony. Also, regarding your question about the CRT ID, I had the unit opened up for a while to try tweaking the settings and see the basic layout, and look for any obvious faults - none found.

Dennis, remember the TM500 has AC power available inside by virtue of the floating LV AC windings - two per slot, so two slots could give four windings at 24V-30V (I forget the specs) each that could