These photos aren't good but give you an idea what it looks like especially the front panel and connectors.?? I'll get some better pics later for

Hello Tektronix enthusiasts, I originally posted this in https://groups.io/g/Test-Equipment-For-Sale-Wanted-or-Exchange/message/1056 I'm hoping for more exposure in this group specific to

So thinking out loud here...It has been pretty well-documented here on the forum in various threads that the 535A scope CRT can be used in a 575 Curve Tracer with a little tweaking. (Pin 8 300vdc

My 2 cents worth: As for cleaners, I've had very good luck with Simple Green - it's very mild, but still effective. I have a box of $1 or $2 paintbrushes that I cut the last inch or so of the

Calibrate the mainframe first. Then the plugins. Craig

Thanks to everyone for all the advice, and Chuck thanks for all the extra input. Looking forward to trying it out. wrote:

I acquired a 7904 with the following modules: 2 - 7A26, 7A19, and 7B53AFor the most part, the scope seems to work OK.  It has been sitting unused in a bedroom for 15+ years. Prior to that it was in a

Looking at it, it has already a tripler, and only makes 2000V. That puts it 1800V low, and it sure doesn't look like it is regulated. How are you going to make up the difference? -Chuck

I agree.  I've been in components related businesses since the late 80's, and this is the first time I've ever heard these referred to as "Dupont" connectors.  Must be a non-silicon valley

... Why rewind the transformer ? - Has anyone considered using a modern DC/DC HV converter module to replace a dead Tek 576 HV CRT transformer (& rectifier circuit parts) ? { ... or

As I seem to recall, Stan used an adapted old chest freezer with a heater inside and fans to circulate air from outside. Craig

I've had pretty fair luck using steel wool, while avoiding the lettering. David Sent via mobile annoyance thingy, please pardon any typos.

I will stick with my current practice, which generally mirrors your recommendations. For really tough cases, I have on occasion, resorted to Acetone or Lacquer thinner. In these rare cases , these

Sorry no quoting, this internet connection and mail program is less than desirable - I'm remote. RG-174 is definitely 50 ohms. Here's a link to a data sheet on

I think it's been mentioned, but be very cautious when cleaning the tube envelopes. The markings can sometimes be very easily disolved with water or other solutions. Best to use a dry cloth or brush

I don't wash scopes and test equipment anymore. The rules are too varied. For instance, the 2465 has a warning label on the attenuators that specifically warns you not to use water to clean. It

Ok, no pic, this is the second try..........this worked before when I posted, if it doesnt go this time try the enlarge feature on the ebay listing (no enlarge when using smartphone but usually the

Chuck, I learn something from your comments almost every day. I don't have any TEK Vacuum tube instruments, may we assume that the same general rules apply to solid state instruments? I knew to

It does not seem like a goof as it is printed right on the cable RG174 75 ohms SEE ENCLOSED PIC If you google RG174 75 ohms you will see it referenced. Here is a sample of the many listings for

Hi Jamie, A few things: Keep the water off of the power transformer, and the HV section. You can put a bag around them, and simply don't aim the water at them. Use a brush to clean in those