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Actually not sure if I broke this or if it was broken before, since it was loose, but there are signs of scarring inside. Anyway, it sure is broken now. The series of photos shows how the bias return

The following photos have been uploaded to the 492 Bias Return ( /g/TekScopes/album?id=301504 ) photo album of the [email protected] group. * IMG_2343.JPG (

I looked at eBay and there are many sellers of MPS-U45; some fair prices and many not fair. One is offering five for $20 shipping included.

I think this is entirely correct. Much to my chagrin, I could reproduce this by heating a replacement 829 MHz 2nd converter, which also explains why I couldn't find a problem in the IF select board:

I have a few MPS-U45 (151-0390-00). If you only need one or two, I can help. Clark

Hi all. Apart from the CEN-U45 is there a readily available replacement? Some people are using TIP 102's with the legs crossed over... Any other suggestions? Thanks in advance. James

I'd say it's most likely a bad solder joint or broken part - something in series with the signal path such that it goes open, but still has some capacitance to couple an attenuated version of the

I seen your repository a while ago and was thoroughly impressed, though this was before I had the tapes or a terminal. I'll have to check it out further. Thanks for reminding me about it. Also thanks

I have 3 CRT's that came with a lot that I acquired 2 154-0910-00 for a 492 Spectrum Analyzer and 1 154-0934-00 for a 494 can anyone use one or all? I don’t have either of those analyzers so if

ALLRIGHT!!! DMM selector switch removed successfully, TEK switch module replacement due in this weekend. Took me about two hours. I thought it would take days. I will post some pix later. However,

It seems that the color rules are: 1. Avoid blue plastics used by Tek 2. Avoid red M&Ms Neither of them last 40 years!

I recovered and posted the files for EZ-TEST v5.0 and the 4041 System Verification tape on my 4041 github repository 5 years ago: https://github.com/mmcgraw74/Tektronix-4041-GPIB-Controller I haven't

I have these 5 tapes for the 4041, any chance someone has a working 4041 still and can back them up? If they aren't dead that is. I'd be willing to pay for shipping both ways and for your time. 4041

Hello everyone, My name is Jack, and I have a 575 that I am trying to understand better, and to calibrate and fix a couple of small things. The present issue is that I can’t get the single

The cam switch drum is one of the many plastic parts in the 7000 and 500 series with this issue. The material becomes brittle and develops chalky white residue on the surface. From what I gather, the

Karin, There was a request by another list member for help acquiring pages that are missing from the various 7934 PDF copies of the May 1986 revision manual out on the internet. I was trying to

Just as a sidebar, my manual in section 7, last page is 7-74. Karin

I had problems with broken individual cams and bushings in the attenuator of a 7A29, which I think are the same gray plastic. I had to do some tricky repairs to put them all back together. The story

I have an original Tektronix service manual for the 7934, dated First printing May 1986, I also have two, count them two, 7934. Is there any question I may answer for you????? Karin Anne Johnson

https://www.3erp.com/blog/injection-molding-defects/ Look under "Surface Delamination." Greg