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On Wednesday, December 3, 2014 11:00 AM, "Michael Noone nleahcim@... [TekScopes]" <TekScopes@...> wrote:



? Daniel - they accepted my order today so it looks like I'll be getting the
manual shortly.

I do not have the means to scan it... Is there anybody in this group that
would be willing to scan?

Thanks,

Michael
On Nov 25, 2014 5:50 AM, "Daniel Koller kaboomdk@...
[hp_agilent_equipment]" <hp_agilent_equipment@...> wrote:

Ok, I'll try to offer $20 on the manual.

My Unit is SN E71625 and has 10 jacks on the front panel. It's particular
failure is a 20V ripple on the output with no input applied. The tube
inside is a 8068. I see a bunch on ebay for $14.50 and up. More expensive
than a typical tube, but not ridiculous. I bet they can be had at hamfests
for much less.

I see a lot of old electrolytics on the circuit board - silver axial types
with rubber caps. Me previous experience with a low voltage Kepco supply of
similar vintage is that they will all have to be replaced. They dry up.

In your case, I'm a bit more worried - not pilot light (assuming the fuse
is still good) probably means no voltage at the transformer. But that's
just a guess without the schematic. I would check the transformer voltages
(with care, given that one of them can produce ~~2KV) to make sure it's
worth continuing.

Dan

On Monday, November 24, 2014 7:48 PM, "Michael Noone nleahcim@...
[hp_agilent_equipment]" <hp_agilent_equipment@...> wrote:

Daniel - that's about the age of mine as well. Can you confirm that yours

has ten jacks on the front, and not 12? (OPS2000 vs OPS2000B)

I'm happy to go in with you on a manual. I actually offered the Ebay

seller $10 + shipping this morning and they promptly rejected it and seemed
miffed (they responded that they reject all offers beneath half their
asking price). Maybe you should offer $20? (I suggest you as they seemed
annoyed with me)

What is wrong with yours? One of the 6.2V references is very much

deceased on mine, and the power light does not turn on. I don't know about
anything else as I'm too scared to probe around the insides of it without
knowing what's going on.

I wonder if the tube in these is unobtanium. I hope not.


-Michael


On Mon, Nov 24, 2014 at 3:06 PM, Daniel Koller kaboomdk@...

[hp_agilent_equipment] <hp_agilent_equipment@...> wrote:

OK, I'm officially looking for the same manual. My unit is also an

OPS-2000, probably from the mid 1970's. I think I dumpster dove it from
SUNY Stony Brook, which didn't really expand their physical sciences until
the 70's so it's not likely to be older than that, but from the looks of it
surely isn't younger.

There is a manual on ebay now:

I'm willing to split costs and do some scanning if someone here buys it.

Else, does anyone else have a copy they can share?

This is NOT off topic. I was thinking of posting to the Tek group

regarding using this power supply as a driver to test RM503 transformers
before installing them in my scope's mainframe. The output driver is a
series-pass power pentode (forgot which one) and the configuration is a bit
similar to what drives the R503 transformer in the scope. But the voltage
might be to high and the current too low from the OPS-2000. And then
finally, I checked the specs here:
(see p. 4).

It appears it only has a 200Hz bandwidth. That's a long way from the

20-50KHz I need to test the transformer. Still,I'd like to fix mine in case
it comes in useful for another repair.

Dan

On Monday, November 24, 2014 12:35 PM, "Michael Noone nleahcim@...

[hp_agilent_equipment]" <hp_agilent_equipment@...> wrote:

I have a deceased Kepco OPS-2000 on my hands. I can't find a manual for

it anywhere. Kepco normally is a good source for manuals - but they want
$75 for a hard copy (no soft). Anybody got a PDF handy? All I need is the
schematics.

Thank you!


-Michael

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