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Interesting. Yeah if it's for IBM I guess it was made in the US, so Beaverton. Maybe the '0' was used for custom built equipment that was only sold to a particular customer and therefore didn't make

The serial number location? key is in the 2nd or 3rd page of the Instruction or Service manual. Not all manuals contain all serial number location keys. Some manuals have no serial location key at

My 310A has serial number 015467 and was made for or customized for IBM (I think this mostly meant that some special accessories were made available; mine came with a leather carrying case and a probe

Just in case anyone wonders: Every time those of you that use the groups.io website to post, post, and then see a mistake and edit your post, and submit that change, and see a mistake and edit your

Thanks Dave. So my scope is indeed SN 1239, very early unit then, and should have therefore come with UHF not BNC... or maybe the plant manager in Guernsey decided on his own to switch early to BNC

I scrapped a couple of 7603s a while ago and think I probably have the HT modules in my spares bin. Let me confirm this and I’ll contact you tomorrow. Cheers, Mel -- you can never have enough

I uploaded all of them to ko4bb.com so you'll find them there... Most are in the Tektronix directory, some may still be in the recent uploads directory. Dave

Yes, Guernsey plant serial numbers start with a 1 Dave

Hi Jim, I scrapped a couple of 7603s a while ago and still have the rear interface panels (with connectors), which you’re welcome to. I’m in Scotland, where are you? Cheers, Mel -- you can never

Please tell me a web address where I can see all of these catalogs listed. Thank you. Gary wrote:

Hi Gents, Just got meself a 310A, such a cute little thing, I just love it :-) I have only just received/unpacked it today, but I noticed immediately something a bit odd/weird regarding its serial

I had to laugh, that is so true! I third the JB Weld. That stuff could hold the space shuttle together.

Gotcha, stereo vision has it's advantages. I was starring right at them but couldn't see the pins! They are both spot on. TP2420 1.362 TP2421 -1.250

This may take some hunting, depending on your A5 board version. On some they’re brought out to TP2420 and TP2421, on others you may need to find them on the schematic and measure on a suitable pin.

Thanks, Siggi. What points should I use to find the reference voltages? -Stefan

Oh, goody, maybe you just have some power supply issues to work through. Is this using the settings specified in the service manual (see below)? AND I have no clue how to measure the p-p at 2x line

Hi Guys, Update time. Finally got in (stripped torx heads are no fun - drilled it out.) I went to J119 and checked the voltages. Two points failed: J119-5 (-4.965 to -5.035) measured -4.53 J119-11

I third the JB Weld. That stuff could hold the space shuttle together. I don't believe it is nylon, nylon is a problem. You can like..."cement" it, but finding something that really makes a bond is

I was able to use two micro screwdrivers to insert in each side of the button from behind and gently rock back and forth to pop the buttons off my 485 and replace the push buttons. The places I

Good day, ? may I second Dallas‘ advice. JB Weld has worked well for repairs of 5000-series front panel bezels, also.?JB Weld was hard to get in Europe, but it is available from Conrad.de and