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Ryan, has that CRT been taken? If not, I would be interested, does the screen appear burned? My 576 works, but has a completely dead spot where the intensity was left too high with a static spot

Wiring restored to original and now it's working. Going to go through the full test and cal procedures to see how it's behaving now.

This is intended for use with some TDS scopes and has a 500MHz bandwidth. So probably ok with a 400MHz scope. They also have a problem which can render them scrap.

Monty, Good to see you have now established communication with the keyboard port. You are correct that the COMM0 port description is required for a 4041 with the dual RS232 port option. I use the

Hello Dennis, Denis Cobley was his name, I spelt it incorrectly. If you look up the old messages you will find him. In regards to test equipment repairs, Magic flowed from his hands and he had an

Hi All, I may have done this, but I don't think so: /g/TekScopes/photo/247625/0?p=Created,,,20,2,0,0. Note the cap and resistor are supposed to be soldered to one another, but the

Hi Barry, That certainly looks like a neat way to handle it! I've already order the disc-shaped ones for this board. As far as I know, there isn't a similar set-up available for the 475, but I like

Hi Michael, I had noticed that page of the manual in passing, but did not study it, as I assumed it would be following the same standard used elsewhere. Thank you for pointing out that that is not

Hi Michael, Very good to hear that Tek has that convention, as it confirms what I thought about how these were oriented before I took them out. Experience is so very valuable when it comes to this

Hi Graham, I've taken several photos, particularly of the A8 board that I removed to get at the large caps. Forgot to do that with the A7 board, but I noted that the printing on the cap was facing

A quick question for the group. I have a 2465b and have found a p6139a locally in good condition. Is this probe a good match for my scope? Dimitris Theonas

Hi John Thanks for the reply and the very interesting story. I feel like I know Denis Cobly from somewhere. I did a search of my email but didn't fine anything. Would you ask him if he recognizes my

Double Yikes! Hello Dennis, thanks for the huge reply, I feel bad that you have spent many hours on it. I have received your message loud and clear. Good to know that you and Chuck are still mates,

Bruce, The chart that many people find in a Google search does not cover three band caps correctly. Refer to the TEKTRONIX manual to find the CORRECT method to decode the Tektronix marking system.

Hi Dennis, We're good. In a fit of pique, I mentioned leaving, because I wasn't here to be scolded. It wasn't that you scolded me, but rather you scolded a topic I was involved with. And to call

My experience with Tektronix began far before I had a Tek scope. I was about 11 years old and saw advertisements in Scientific American for Tektronix oscilloscopes. I wanted a catalog to learn more

Bruce, The square pad is TEKs way of designating the positive side of any polarized device. So Yes, square pad is + side of the Capacitor. This also applies to diodes as well. Sometimes Tek will

Bruce, the + sign is unambiguous, that lead is definitely the postive lead.? The 'bent knee' lead may be the + lead but I am not aware of that as a convention so trust the markings.? Likewise the

I found two resistors next to the keyboard header on the CPU board. One was about 130 ohms to Ground, the other was about 120 ohms to +5V. The other end of both resistors next to the keyboard header

Beginners can become skilled users and restorers of any type of equipment if properly mentored. But if they are left to languish for themselves it can be a very steep hill to climb. Before they