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My apologies. The correct link is https://www.davmar.org/TE/Tillman/TM500-Tillman.html Dennis Tillman W7PF

I have refrained from contributing to this thread because I have been afraid of going overboard. There have been a lot of good point made (like you need me to tell you that!). Once you put something

Hi SnapDiode, You definitely hit a nerve. 17 years ago I began keeping lists of various Tek products I had so I didn't buy something I already owned. That was how my list of TM500/TM5000 plugins got

Not to be outdone (who says size is not important?) this was my first scope, 1961, an 11th birthday present from my Dad. http://www.thevalvepage.com/testeq/cossor/1049/1049.htm Busted and scrapped by

Luxury! My first scope, aged 16 was a Hartley 13A, and real just-post-wwII behemoth. For pics of what this pretty useless performance beast looked like

Hey there fgswww(?), Look at page 6-13 of the service manual, where it describes the "Kernel Tests" and "Exerciser Routines". The front panel LEDs likely have a message for you relating to the

Writing a reply to Phillip Potter's e-mail address, it bounced back. I've already signaled the inconvenience to the recipient's AT&T mail server. They replied me to wait 24-48 hours to solve the

That's an interesting little scope. I have a soft spot for the early Telequipment scopes, since they seemed to be all that was affordable on the secondhand market for schoolboys like me in the 1980s.

So once upon a time, in Olde Merrie England, there was a company that produced cheap but adequate oscilloscopes which they sold around the world. Then, one day they decided to remodel them to make

If you cannot incorporate a trade secret into your work. Release documents under a CCL, software under the GPL, and push it out everywhere. That way it becomes highly cost-ineffective to the rip-off

You probably won't like what I have to say, but here goes: When you do a job like scanning, cleaning up, and OCR'ing the text, of someone else's manual (tektronix, hp, ...), and then put it out on the

Hi, when I repaired my 7904 I used two BU208A with good result. I guess 485 and 7904 supplies are similar. And it works fine. G?ran

Did you put a copyright note on the document?

Thanx for the perfect service :-) grtz, René

Craig gives good advice for the long term but I doubt it will fix the current problems.? You say the voltage measurements are near (+/- 5%).? That means the scope should run, just not be accurate in

Power supply voltages are very important. I would recommend disassembly of scope and remove PS as a unit. Pay very close attention to the wiring connections. Then separate the inverter and regulator

I donate through payroll deduction. Guys and gals, do not overlook this possibility. Check with your employers. It's about $19.23/paycheck for me which comes out to $500 a year. Just twenty bucks a

I appreciate your work and thoughts about his issue. By way of 'full disclosure', I do not have a 1S1 or a Tek Scope that would accept it. Therefore, in no particular order. 1. It is an extremely good

I wouldn't mind if every seller who's selling CD-ROMs or printouts of freely available PDFs got reported. It's a dumb scam. (Disclaimer: I've put considerable effort into some of those Tektronix PDFs

DITTO!! Anticipate retiring in 15 months and will need all the help I can get. Thanks for everyone's help with all my previous and future 'projects'!! Joe