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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

Hi Wamor, Would this work on a TDS620A? Rafael

To me, that appears like someone has used an incompatible contact cleaner or such on it. Russ

I would very much appreciate those scans Mark W7HPW Real Radios Glow in the Dark

Where and who is "Mark, the OP"? Could you consider uploading just those 3 pages, 3-1, 6-22 and 6-23 to TEKSCOPES files area? That would help anyone, including me, update the old manual until such

I have some (PG506 for one, IIRC) cam switches that are cracked on the ends, and I expect they're on borrowed time. Nothing as bad as in Clark's photos, though. I've had the same thought, more

I was fortunate to find an NOS replacement for one drum , 105-0509-00. That allows me to experiment with the bad unit; however, I am not sure where to start. One thought is to find a compatible resin,

Last time I did serious IEEE programming was writing a driver using PLM-86 for one of the competitors in the MATE program.? That was a LONG time ago.? TMS9914 I think was the chip. Harvey.

Hey Clark, I've never seen such a thing (/g/TekScopes/album?id=301415), how strange. I wonder if anyone here knows what sort of plastic Tek used for these? I've never looked closely

I ran the 492 long enough for it it wake up again, and tried swapping a cold VR module in…and it kept working with a full scale peak, which ruled out the VR (and calls into question my notes on

Have you checked its functions, or are you too scared ????? ;-)

Almost. Valid addresses are 0 thru 30, with 31 reserved for Untalk or Unlisten. Steve Hendrix

If your incorrect address of 4 instead of 14 was written in hex or octal rather than decimal, I'd suspect a bad DIP switch. But IEEE-488 addresses are usually stated in decimal, and context in the

Hi Mark, At this point, anything could be bad as far as I'm concerned, including my reasoning to get to the VR as a potential problem. Without extenders, I don't think there's enough room to spray

[email protected]> wrote: It looks like archive.org captured at least some of the threads

Adam, Could the transistors be bad? The 2N5179 replaces ones on this board of the p/n, 151-0282-00. If you have component cooler, use that to briefly spray on the transistors to see if cooling them

Radu Bogdan Dicher <vondicher@...> added the photo album Tektronix TDS754D - acquisition board issues ( /g/TekScopes/album?id=301426 )