I thought I already answered your question. You can do it providing NVRAM data is not corrupted but what the point if you have to go through the procedure all over again. My advice do it all in one ru

2467B is dual time base oscilloscope hence to stage calibration. First table is is for "A" and the second is for delayed "B" time base. You can skip second part providing data in NVRAM is not corrupte

My 2465B is missing large aluminium plate which covers chassis from the top. It has serial number over 5000 so the cover is the later revision which fits all 24xxB with serial numbers above 5000. If a

What you can do, you can dissect your faulty DS1225AD. Just remember DS1225AD is using dual battery DS1210 non volatile controller. What that mean you must get to pin 2 of DS1210 instead of pin 7 of D

Thank you for sharing all the info regarding multimeters and voltage references. For handheld meter I had my trusty Fluke 75 since eighties. Great meter and the battery last forever. It slightly disag

It would be interesting to know how members go about and keep in check accuracy of their workshop multimeters. I have 5 multimeters and each is giving slightly different results. It would be nice to c

This is "Christmas tree" oscilloscope. On the back it says Option 5 - Video trigger. The front panel is off 24x5a. I would pass on that one unless one have a lot of 24x5B spares. Option's 5 front pane

No, R754 didn't shorted through. Part of the resistor touching -30V trace burnt. Its resistance decreased. I think it changed to about 150k.

I would like to draw attention to some possible nasty problem with 577 Curve Tracer. Since I bought mine a few months ago, very intermittently, I could hear arcing noise somewhere at the back of the u

Thank you for replies and my apology for the typo. Henryk

I found Q862 to be faulty in fast rise section of PG-506 generator. PG-506 manual asks for Tektronix part 151-0525-00 and further is referencing to S39291. In Cross reference Tektronix manual I found

Thank you for all replies. It confirms what I suspected. I am missing the prescaler board. Henryk

I acquired DC508 counter Opt1. It works fine from direct input but 75-1GHz input is not connected to the circuit. I couldn't find DC508 1GHz manual. I downloaded DC508A 1.3GHZ instead. The DC508A appe

I second everything what has been said about removing caps and cleaning. The only thing I would add; after scrubbing the boards with soapy water, followed by alcohol and drying in the sun or in the ov

I am looking for 7K extender too, possibly 3 sets. John Griessen's production board looks very neat. @ John Griessen Do you sell them? Do you sell them as a kit including edge connector? Henryk

I followed the advice and the error was consistent. Vertically displayed signal was halved. I found Q628 in complimentary pair in 177 fixture to be faulty. Unfortunately when I proceeded with calibrat

I followed the advice and the error was consistent. Vertically displayed signal was halved. I found Q628 in complimentary pair in 177 fixture to be faulty. Unfortunately when I proceeded with calibrat

I followed the advice and the error was consistent. Vertically displayed signal was halved. I found Q628 in complimentary pair in 177 fixture to be faulty. Unfortunately when I proceeded with calibrat

I received my 577 Curve Tracer last week. Very impressed, very nice instrument. When I was bringing it up with auto-transformer tantalum cap in -30V PSU started to sizzle. Later, I found two suspect h

My knob completely disintegrated. What left was the dial and aluminium insert with small pieces of plastic still stack to it. I was lucky enough to buy some Tektronix knobs from Deanne Kidd some years