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Hi Tan, Some one told me that the 2220 is the 60 MHz version of the 2230 100 MHz scope. If this is true, the 2230 manual might be your best bet. It is available from several places including:

Personally I would see what can be done with SMD or removing the epoxy and leads from a leaded capacitor. ST <david.partridge@...> wrote:

Drats - I meant to type 10nF Regards, David Partridge

Oops that should 1nF - not 10pF Regards, David Partridge

As reported in an earlier post the metallisation on the top surface of the leadless capacitor C816 on the trigger board came off when I unsoldered the arming and output TDs in my 7T11. I've improvised

Tan: ? ? ? ? I beg your pardon, I did not realize that you definitely do have the basic skills! ?But do buy or build an ESR meter, as a great number of ?problems are caused by defective

Thanks for your answer. Pertaining to the voltage measurement on R907 but I still need to know what to expect to know if an overload has happened. Nothing usually hot, other than the common heatsink

Why put an ammeter in series with the resistor? Just measure the voltage across it and do ohms law. If you are not certain of the resistor value, lift one end and use your ohmmeter to check it. Does

Thanks Gary, Do you suspect that it's a cap ESR issue? Why would it cause such a behaviour? I believe you can infer a lot from the behaviour than blind guesses that's where I am trying to tap from the

David, I agree with Jerry---You don't need an isolation transformer to work on this scope. T801 provides all of the isolation necessary. I still beleive that you need to concentrate on the +50V

Thank you Tom for taking the time to point out specifically the likely cause of the problem. I know it takes effort to go through the details and I really appreciate it. Just to let you know where I

Congratulations, Achilles. Great to hear that Q180 was the "fuse" and not Q190 which probably would be much more costly to replace, if a replacement could be sourced. Patrick Wong

Folks, The Tektronix 108 manual is here: http://w140.com/tekwiki/wiki/108 Here is a list of manuals that are needed, but not available: http://w140.com/tekwiki/wiki/List_of_manuals_that_are_needed If

Found a problem area in the vertical output board. 18v and 48v on outputs to the plates and no signal on them. The signal exists on both inputs to u470 and is within spec. Disconnecting the plate

I saw your 2220 question the first time you posted it a few days ago, and I did not have a nice short answer for you. Since you have not gotten the answer you were looking for, let me comment a bit on

Hello, I went to lemo.com and selected the nearest office contact details and sent them an email inquiry. I am shamed to admit that "right now on my desk" actually means they have been buried under

Hi to All, Tek used the 8393 Nuvistors in the Type 1A6 and 1A7. Look at the Circuit Description of both Plug-Ins and you know why. The so called differential adjustment of heater voltages. In addition

Probably meaning it's only there at the fast ranges, 500 ns and 50 ns? The Rate meter can cope with an enormous range of repetition rates, split in 3 parts IIRC (more or less logarithmic). Because of

Hi Patrick, I have some good news: my SG503 is fixed and running. With your and David's help, I identified Q180 (2N3906) as having failed . C180 was also damaged (open). R180 and R216 had signs of

Is this the kind of application where the differences between saturating (TTL) and non-saturating (ECL) logic would apply? I wonder if the extra jitter is from poor power supply rejection.