Chromega B power supply?

Discussion in 'Darkroom Equipment' started by inlarry, Jul 2, 2012.

  1. inlarry

    inlarry Member

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    Acquired a very nice Chromega B (XL version no less) for $5, but no power supply. I've checked Ebay and the ones in my "willing to spend on something that may not work" range are all untested/warrantied. The rest just cost more than I want to spend to find out if I've got a REALLY big paperweight.

    Anybody know if there's another source to power this sucker, or a way to wire up something other than the official Omega PS?
     
  2. George Nova Scotia

    George Nova Scotia Subscriber

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    Which model "B" do you have? There are/were brackets to put a C760 lamphouse on the B600, Concept Six, B66 and B22 enlargers. The C760 has a built in power supply although the Stabilizer is external.
     
  3. inlarry

    inlarry Member

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    According to the plates on the enlarger, it only says "Chromega B". From my research, it was a model into itself. It takes a 75w 24v supply from my research.
     
  4. George Nova Scotia

    George Nova Scotia Subscriber

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    From KBH the

    "The Chromega B Dichroic covers formats up to 2¼"x2¼" and was initially fitted to the B-22, then the B-66 and B600 enlargers."

    "The Chromega B Dichroic is quite suitable for standard column length enlargers, but we'd prefer one of the later C700 or C760 colorheads for XL models. Since the Chromega B requires an external power supply,"


    Take a look at their site, you might be able to figure out the model. It sounds like the C760 Lamphouse would fit depending on the bracket.
    Here's a snip from the manual:
     

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  5. inlarry

    inlarry Member

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    Maybe there's some confusion, here's what I've got, I'm just needing to find a way to power it up. 5Le5N95M13G93ma3N9c6jdb008e7e3db8165a.jpg 5I85Hb5R63E63J33pbc6jbbf93615f0491e6a.jpg
     

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  6. George Nova Scotia

    George Nova Scotia Subscriber

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    No problem. What I'm suggesting is that it might be just as easy to find the C760 as find the B power supply. I have 3 C760s gathering dust, two with bracket as above.

    Just an idea.

    George
     
  7. David Brown

    David Brown Subscriber

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    Sorry to rain on your parade, but I think you have a tall, $5 paperweight. :sad:

    This is the problem with buying used enlargers. You have to be careful that what you get is complete. You could probably be patient and find another Chromega B for the same or less than you're going to find a good power supply separately.

    The other trap is that you get a complete enlarger for say, $25, then you need another lens board and a different neg carrier. All of a sudden your $25 enlarger has cost $100. :blink:

    All you have to power on the Chromega B (I have one) is the bulb. Someone handy with electrical stuff could build a power supply given the specs, or even refit the head with a 120V bulb. But, I'd bet you're still going to spend more time and money than just finding a good and complete machine.

    Just my opinion - YMMV. :smile:
     
  8. ic-racer

    ic-racer Member

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    Keep looking and be patiet. "B" power supplies occasionally are given away for free. Someone has the power supply for your enlarger and is using it as a paper weight. I got a free "D" power supply a while back. The unregulated power supply is just a transformer in a box and there is not much that can go wrong with it.
    Also, you can get a generic 75w supply from a number of sources. The pins are slightly differnet on the 120V dichroic lamps, so if you go that route you will need to replace the lamp socket (not a bad idea in any case).
     
  9. Steve Smith

    Steve Smith Subscriber

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    A volt is a volt. It doesn't need to be a specific power supply, just one at the right voltage capapble of supplying enough current.

    What is the bulb rated at? If it's 24v 75w, a 24 volt 4 amp power supply would be easy to find.


    Steve.
     
  10. WayneStevenson

    WayneStevenson Member

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    I think I have a spare never-used head with power supply around somewhere. Shipping is obviously not going to be cheap. They're heavy. Especially the part you are missing. Aside from shipping, what are you willing to spend on a known good one?
     
  11. WayneStevenson

    WayneStevenson Member

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    But with that said, those enlargers are a pretty common find on the used market. Just so you know.
     
  12. inlarry

    inlarry Member

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    Oh, I know they're easy to find on the market, I just happened to stumble on this one at my neighbor's storage barn complex from a deadbeat who never paid. I've found others locally on craigslist, but they all want $50+ for them, or won't separate them from the ton of junk darkroom supplies they're trying to unload for $200. I've already got neg. carriers and lenses that'll fit this model though which is why I picked it up knowing it wasn't complete in that respect (finding one of these with carriers in any model seems to be like finding Atlantis for some unknown reason).
     
  13. graywolf

    graywolf Member

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    I too have a B66-XL with the Cromega B head that is missing the power supply. Luckily it came with the condenser head too, but one of the condensers is missing. Even more luckily I have a B22 with the condenser head that has one scratched condenser. Between the two enlargers and three heads I managed to put together one working condenser enlarger. For the price of a couple of lens boards.

    What I can not understand is what in the heck happened to all those missing parts?