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Some time after my first response to Jim Powell's comment I decided to re-look around, and I discovered that I only needed to remove the bottom panel in order to see the end of the CRT. Not sure why I

They routinely go for $100-$120 at hamfests in the pacific northwest. (475/475A go for about $200). You willget a better price at a hamefest of craiglist, as on e-bay you are competing with everyone

Thanks guys on the impromptu training on the 7854. I had thought to be helpful but I should have checked for similarities first before posting. At least it is good to hear that if/when I finally get

Are you double sure the connector between the bottom half and top half is plugged in tight, all associated connections/pins are tight, clean, etc.? All of my 7704A's had strange 'issues' at first.

Currently I've seen reconditioned 465's in very clean condition selling for between $250-500 (really!) on ebay.

I'd like to thank Casey for posting here; at least there's a fighting chance somebody with the proper inclination and skill will see it AND lives close enough to adopt it. Google says Scotts Mills is

Ive added some photos of the scope displaying the fault. These are in my photo folder under bill.valvetechnology. Ive checked the waveforms and ripple from both power supplies against the manual and

http://www.slack.com/TE/Tek7854/

Hello, I bought a broken 7704A. The question: anybody knows the function of the 155-0013-00 IC ? Is possible to build an equivalent device, or to test one comparing it to another one? I have tree of

Hi, I need a 366-1028-00 knob. It is used on 7A19, 576 interface, and -1 standardizer and likely others. Jerry Massengale

I find it most unlikely that both these chips have died. The outputs of these, as you marked, are 250 MHz ECL. The inputs (ACQCLK) are also as you marked but are 250 MHz on about +3VDC and not 1 GHz.

Glad it worked out. I lost track of the thread but are the images archived somewhere? If not, it would be good to post them on several sites. www.ko4bb.com would be one I would think of. Thanks. Joe

Hi all, I am also in Germany, and have a 585 and a 585A (and some more....), and I will gladly drive some distance to give a good home to anoter of these very fine instruments. Of course, I also

I've just fixed a problem with the PSU in one of my 2225 scopes. It turns out that three capacitors had gone s/c; C986/988/990, all 1000uF/16V electrolytics on the three LV lines +/-8.6V and +5.2V.

It ends up that my paper 7904 manual is incomplete and missing schematic 11 so I have nothing to scan. Some of the earlier schematic pages were inserted backwards so maybe it was disassembled at some

No argument; epic but nearly useless because of only 4 cm vertical deflection. I am preserving two 585As with all five plug-ins ever made for it, including the cal unit and both versions of the 81

Hi David, When readout intensity is ok then there is not much room left for faults in stored mode waveform intensity. The path for the "intensity setting current" starts at the intensity pot A5R65,

That ist right. 585, 581 are a epic technologiy. high bandwith, distributed deflection and tunneldiode -base triggering (only with A-version) [url]http://w140.com/tekwiki/wiki/File:T580_CRT.JPG[/url]

Hi All Good news, my 7854 is up and running again! I got the replacement ROM,s from buyicnow.com as suggested, they were able to program them as well. Delivery was super fast! Thanks to you all for

Photos of TP1801, TP1805, TP1827: http://www.strucktower.com/3267tp1801.jpg http://www.strucktower.com/3268tp1805.jpg http://www.strucktower.com/3270tp1827.jpg After I made these I realized that I