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Post by thespianator on Aug 30, 2015 10:48:56 GMT -5
Hi, This is from a Normark Norlite 400, a photographic flash and modeling light source. I think it's the flash controller. I can't find it anywhere, and I think the original manufacturing company Omnephase is out of business. Possibly a proprietary part? Thanks! Attachments:
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Post by mastertech on Aug 31, 2015 20:49:27 GMT -5
This part is an AC Phase Controller. 6 amp. 115v type A mount. I see that the original manufacturer is not far from me so I gave them a call this morning. I talked with technical support and they said they would look into any availability and also see if there is a newer cross part. Unfortunately I later today received an email that it was no longer available and they had no cross part. Here is the datasheet. I don't have time right now to search for a comparable part but maybe with the document you can find something. www.datasheetarchive.com/dl/Scans-006/Scans-00122437.pdfwww.datasheetarchive.com/dl/Scans-007/Scans-00159255.pdf |
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Post by thespianator on Sept 1, 2015 18:58:00 GMT -5
Thanks, MT! I appreciate your efforts on this. I'll study the datasheet, but I'm not sure if this is considered a standard triac or whether it's something else altogether.
Any flash repair place would only demand that I send the unit in for repair, and it's just not worth the cost including shipping.
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Post by gjaky on Sept 2, 2015 11:48:41 GMT -5
After looking at the datasheet, I'd say this is a universal "light-dimmer" in a small package and without the variable resistor included.
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Post by thespianator on Sept 5, 2015 12:49:01 GMT -5
After looking at the datasheet, I'd say this is a universal "light-dimmer" in a small package and without the variable resistor included. Does that mean a replacement is NLA? If so, is there a way to combine a light dimmer with another component to achieve the same thing? I thought it was used to activate the flash. It's from a Normark Norlite 400, which is a combination flash unit/modeling light. |
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Post by gjaky on Sept 5, 2015 13:14:33 GMT -5
I'm sure it is not a very complicated circuit inside... between pin2-3 there is the triac's two anode, pin1 is the control. Triggering of triac is often done with diac. Here is a circuit which is a very good guess what should be inside that little box:  BTW how did you come to the conclusion this is the part which failed? |
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Post by thespianator on Sept 5, 2015 14:57:53 GMT -5
Thanks for your response. There was no continuity between any of the legs, and it looked burned.  |
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Post by gjaky on Sept 5, 2015 17:35:52 GMT -5
Normally you can't measure continuity neither on diac and triac.
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Post by thespianator on Sept 6, 2015 13:50:13 GMT -5
Normally you can't measure continuity neither on diac and triac. I thought about that, but the scorch marks on the back looked ominous. I've also talked with a flash repair center, who told me most of the time it's that part that goes out. They wouldn't sell the part only - they wanted the repair job, and it's not worth the cost of shipping both ways plus the repair cost when this is an older unit. In response, they suggested bypassing the flash unit and just using it as a modeling light. I'm not sure how to do that, and felt that obtaining the right part and repairing the unit would be simpler and I would trust it more. The part is on that small board, and that looks like two (red and green) capacitors (?) next to it. Otherwise, I would cannibalize it and take it as a total loss. I'd much prefer to fix it for photography use.   |
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Post by gjaky on Sept 6, 2015 14:29:30 GMT -5
So what type of bulb it has: incadescent, xenon, or?
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Post by thespianator on Sept 7, 2015 8:04:38 GMT -5
So what type of bulb it has: incadescent, xenon, or? One incandescent, and not sure of the flash is considered a xenon or what it actually is.  Attachments:
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Post by gjaky on Sept 9, 2015 13:45:51 GMT -5
You should make a test circuit for that omnephase according the datasheets, with that it would be sure if that working or not.
Is the incadescent bulb still good?
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Post by thespianator on Sept 11, 2015 21:02:58 GMT -5
You should make a test circuit for that omnephase according the datasheets, with that it would be sure if that working or not. Is the incadescent bulb still good? The incandescent is still good. I could use some help making the test circuit you're describing. For arguments sake, say it's still good. If so, what part on the board would have gone bad? |
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Post by gjaky on Sept 12, 2015 0:36:36 GMT -5
Well, what's else in that box? I see two big red capacitors, can you take more pictures from inside?
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Post by thespianator on Sept 13, 2015 20:38:47 GMT -5
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