[hp_agilent_equipment] NOT OT: manual for Kepco OPS-2000?

Michael Noone #111792 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 [Non-text portions of this message have been removed]
Daniel Koller All Messages By This Member #111795 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 toggle quoted message Show quoted text 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
Michael Noone #111951 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
Daniel Koller All Messages By This Member #111952 Hi Michael,?? Nice! ?I'm happy to scan it, and I can drop the results into dropbox or mail you an old-fashioned CD in the end, and dump to PDF as well before mailing the manual back. ? I would scan the pages at 600 DPI for posterity and compress the black and white pages to 32 shades of gray. ?That keeps the definition around the edges of the fonts while reducing the file size dramatically. ? As for schematics, I would have to scan 8x11" wide swaths and paste them together, which I am used to doing well. ?I've been storing my old scans of the Amateur Scientist column of Scientific American this way for years, so I have the capability and the storage space. ? Are the pages in a removable binder? ?If so I can do it in a couple days. ?If not, a couple weeks as it takes longer to do manually. ?I can send the schematic up front. ? Dan toggle quoted message Show quoted text 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. 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[hp_agilent_equipment] NOT OT: manual for Kepco OPS-2000?