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I have recently become the proud owner of a 475 that I found abandoned at the side of a road! Other than a couple dents in the casing, it appears to be in pretty good condition. After replacing the

I would be interested

Hi Harvey, Thanks for your email. It was very helpful. I was working with the scope for a while, turning it off and on a few times, and finally the screen came up. I suspect that since the scope

Hi Gypsy, The question is too open-ended. It is expected that you would ask it and then list the 'five' basic tests you ran and their results. The 464 S/M itself has a Troubleshooting chapter for you

I have a surplus acquisition board, P/N 679-4774-02 (from the label) or G9F-2841-00 (from the top copper layer). It was, as far as I know, working when pulled out of its host TDS520. The 'scope itself

I don't share your disdain for tantalum electrolytic capacitors.? Their dramatic failure modes to happen when they are operated near their rated voltage.? For this reason, I de-rate their voltage

So you replaced parts who's current main failure mode is less capacitance with a part who's known normal failure modes are burns up in flames taking out the PCB or short circuit taking out the parts

Howdy all. Was trying to calibrate a DM501A this weekend. DC volts calibrated with no issues however AC volts and dBmV did not. In both cases I ran out of pot room just a tad before I had it in

On Sat, 11 Aug 2018 20:31:33 -0700, you wrote: All the lights ought to come on, then the power up sequence starts. You should hear relays clicking, and you should see different lights on the front

https://www.ebay.com/itm/132740408593?ul_noapp=true No affiliation.

A big THANX for all the effort !

On Sat, Aug 11, 2018 at 8:27 PM Thomas Dodge <tdodge2404@...> wrote: > Hi, > My name is Tom, and I haven't sent any emails in a while. I just bought a > Tektronix TDS 648A scope. I plugged it in

Only to be careful with the high voltage and the complex reassembly process. My replacement transformers were layer wound but the originals are pie (universal) wound. Chuck Harris on this group has

Took the chance to recal. the unit using better precision gear than specified in the manual. Improved the 6Mhz reference accuracy to -0.06dBm vs -0.12dBm with the R270 & R280 amplitude adjustments.

And me 108 years.? That is if my electrolyics don't leak out.

Hi y'all: Was doing some calibrations on some precision, stub tuned (+/- 0.10dBm @ 4Vpp, full range) leveling heads over the past couple of weeks for the EBAY sale listing that I put up occasionally

Lets see that would make me 107 Years Young. Sounds like you did a good job.?Leon Robinson ?? K5JLR Political Correctness is a Political Disease. To: [email protected] Sent: Saturday, August 11,

See this photo album /g/TekScopes/album?id=66462 for my recent repairs on a 2465B. This 2465B had modest corrosion on the A5 board from leaking aluminum electrolytic capacitors. On

On Sat, Aug 11, 2018 at 05:29 PM, tom jobe wrote: > > Hi Leo, > Yesterday I found the Fluke thermocouple and did some tests on a 2215A. > First I disconnected the optional fan, then let the scope run