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Guess you're assuming that the battery was nominal and that there is some form of above normal battery current leakage? Any idea what should be the expected current parameters? Would this even be

You should measure the current. Regards

Since its so easy to open up this scope today removed battery without even having to move the board, and it only measures 0.11V. I don't understand how a backup battery can get this low in only 8

Monty: Please let me know if you ever have a working ROM for the 4041. I would be willing to buy one for a reasonable price. This is the route Tektronix should have gone instead of forcing us to boot

Thanks for the idea of removing the *front bezel* to get at the fiber-optic display on the R5030. Viewed from above, it seems to be bolted in from all sides in a totally inaccessible way, but maybe

Keep it up, Monty I, for one, am looking over your shoulder with interest! DaveB, NZ

Dear All, I have this scope and I have been suggested in other topic of this forum to Recap at least the LPVS. Since I live in Brazil, I don`t think I can buy any Cap from the local supplier since 99%

Hi Egge Siert, I saw Kurt was mentioned as the author of the pictures but there's still quite a gap - geographically as well... Raymond

The first 10 pages of 20 are here: https://www.pearl-hifi.com/06_Lit_Archive/15_Mfrs_Publications/35_Tektronix/A_Primer_of_Waveforms_and_Their_Oscilloscope_Displays-1-thru-10.pdf There were a couple

Hi Raymond, I assume Kurt, like me, also roams the internet looking for interesting items and their pictures. Greetings, Egge Siert

I would certainly be interested in seeing a scanned copy of this waveform pamphlet. I learn something new every day. Gary -- Gary Robert Bosworth grbosworth@... Tel: 310-317-2247

Harrison, With F558 blown (or removed), what kind of resistance from the junction of F558/L558 and ground do you see? Yes, it's a very basic question, but I'm wondering if something is being

I think I've found the problem. I disconnected the voltage multiplier (A1U850) from the HV traansformer (A1T800) and attached a NE-2 lamp to the transformer output through a 100Mohm resistor, and

Triggered by Walter Shawlee's recent topic about his R5030: A while ago I noticed that all but a few external photos in Tekwiki's 5030 article show my 5030, that very sample. Does anybody happen to

Have a look at the manual of the R5031 on TekWiki. The R5031 is the bistable storage rackmount version of the 5030. Its manual is available there. The readout is mounted the same as in the 576, like I

Doesn't it work the same as the 576, IOW remove the CRT bezel and pull out the readout module from its edge connector at the back? Raymond

Hi Walter, Thank you for the information, and that exposed crystal certainly sounds like a reasonable explanation for the low spec frequency adjustment called for in the cal procedure with the case

My room was the single room on the second floor of my parents house, and I had the same problem with too much heat in the summer and too little in the winter. But I kept a R390 on at night and it