Thank you Andy. This item is not available anymore, but I just got this one: https://www.ebay.fr/itm/202651641649

Also if you search through the messages... you'll find a discussion where Dennis is relating how Tektronix, at one past point, was behind HP in triggering technology... that was not a good place for

They say: Why is this here? As of August 2018 the State of California has changed the requirements of the "Prop 65" law. We now must list on our website any possible chemicals the can cause cancer,

Everything is known to cause cancer in the state of California.... Makes me glad I don't live there. -Chuck Harris Roy Thistle wrote:

WRT extenders, following advice here, I picked up one of these: https://www.ebay.com/itm/401747463642 Some quality time with a dremel to cut the slot in the PCB, and removing a few wires on what

I might add to Harvey's comments. Do an ohmmeter check of all the supplies first to rule out shorted supply busses. Regards -- This email has been checked for viruses by Avast antivirus

Not too hard to do, the sockets can often be a problem.  Some transistors may be socketed too. Sure.  They're fragile, and the hall effect sensor is about impossible to come by.  Read up on the

Plugin gets Hot: check for shorted tantalums.  Check power supply voltages first. The TM5000/500 series does not use regulated supplies (except for some in the TM5000).  The plugins rely on 1)

Per requests, I added power meters, couplers and loads to the HP and RF sections, and many other interesting RF widgets. might be something useful there for you. Send me any special requests, we are

Did I mention that this plugin gets burning hot?? Even the BNC at the front are extremely hot. And the Level is very sensitive too, even after I cleaned it with IPA.

If it ain't got tubes, it ain't for me! Just kidding, that's a good link.

Pictures of some wave forms have been posted here in the same folder. I wrote what you’re looking at underneath each one. https://groups.io/g/TekScopes/album?id=250733

FYI Might interest some here: https://hackaday.com/2020/07/19/upgrading-the-ram-in-a-25-year-old-oscilloscope/

Oddly enough, the eBay pictures the guy posted with the unit on, seemed fine. All the modules were on. Maybe during shipping...? Weird...

Indeed!! Yep. I’ll have to take the whole thing apart. There are many on the middle board. Whenever I get one, if I ever do, I‘lol make sure to be extra careful. Thank you for the heads

That's an older (but very good) "Circuit Concepts" book (they are generally very good; but mostly written... and about... technology that is decades old.) A newer, but not as well written... in my

WARNING: May cause cancer or reproductive harm?.. at least in the state of California?

I believe this will typically happen when one of the "pass" transistors in the power module is bad. I remember smoke under similar circumstances with my first TM500 power module.

Interleaved comments: Apparently his definition of "work" has been exaggerated... The display is scanned.  It's not scanning.  A recommendation would be to remove all the socketed ICs, clean the

I purchased a TM506 (with Option 2) from eBay, and it arrived 2 days ago. This is my very first TM series ever. Pictures here: https://groups.io/g/TekScopes/album?id=250733 It came with all the