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Barry, Raymond, Yes, we're talking about Q130A/B and, well, now I stand corrected. It *is* socketed. At first, it would not budge so I thought it was soldered in. But after looking closely and

Sorry, still not convinced, to say the least. On your image 20211104-072656_Burst01.jpg I clearly see 2 (or 3) socket pins under Q130's leftmost pins. Maybe if you try and wiggle Q130 a bit, you may

That's odd. I looks like it's socketed to me as well. Are we all talking about Q130 (somewhat left and down from center in image 10 on your web page)? Thanks, Barry - N4BUQ

Trust me, it is! -- William, k6whp "A friend told me to cheer up, things could be worse. So I cheered up and, sure enough, things got worse!"

The following photos have been uploaded to the 2901 bridge rectifier modification and mounting ( /g/TekScopes/album?id=269657 ) album of the [email protected] group. *

I have to disagree. I've been over every millimeter of of this unit and can find no part that is more than slightly warm, and those parts are the 22 RTL logic chips. So unless all the chips have all

The following files have been uploaded to the Files area of the [email protected] group. * /AM503B, AM5030, A6300 067-0270-00 Verification & Adjustment Kit 070-9352-01.pdf (

To all, I just uploaded a couple of extra documents that might prove handy for the AM503B. “AM503B, AM5030, A6300 067-0270-00 Verification & Adjustment Kit 070-9352-01.pdf” instruction

Looking at your photograph, Q130 doesn't seem soldered in. Its pins are individually socketed in "Berg" sockets, AFAICS. Raymond

I will be interested in following this. I have two 7D14s - neither of which work properly. I thought the problem with my first one might be with U329 and when I received the second one, I tried

..sorry, I neglected to add: http://righthandofzod.blogspot.com/2021/11/tektronix-7d14-fix-up.html -- William, k6whp "A friend told me to cheer up, things could be worse. So I cheered up and, sure

Schematic 6 (page 141 of the May88 manual) shows the switching scheme for S100A/S100B. Across the top of the diagram are the numbers for the individual switches and at the bottom, there's an arrow

Jeff, Sadly, the Q130A/B double FET is firmly soldered in and I and loath to attempt to free it. If that DOES prove to be the problem, I will "screw [my] courage to the sticking place" as Lady

It is not on the Main Board, if you look closely at the schematic there are some outlines for the Main Board and the 'Attenuator / Sweep Board'. Q736 is on the A12 board, 'Attenuator / Sweep Board'.

Well, the vertical yoke at 60 hz can be mostly voltage driven, the horizontal yoke at 15.75/15.625 Khz needs to be current driven.? Given that you have the right driver, you'd be more or less

It might also be the dual FET (Q130), just above and to the front of Q216 and Q218, clearly socketed in the board image on TekWiki, or the solder joins or passive components between FET B and Q218

Yes, the fact that external input works means that the switch must limit the location of the fault, or the switch is the fault itself. The switch appears, from the pictures on TekWiki, to be a wafer

The early A6302 has no hole and no trimpot. Instead it has a selected resistor inside (still exactly as in the P6302). See the manual 070-02897-00 at Tekwiki. W.r.t. AC only, you might verify at the

Great video on the quick-change collet, thanks!

Thanks for the tip! I was subscribed to Stefan already as it turns out :) <bruce.griffiths@...> wrote: