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Post by EmRR on Mar 23, 2023 13:31:49 GMT -6
I have zero bandwidth to do any of these conversions for the foreseeable future.
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Post by brenta on Mar 23, 2023 13:53:03 GMT -6
I have zero bandwidth to do any of these conversions for the foreseeable future. That's too bad but I get it. You did mine during the pandemic when work was cancelled for everyone. indiehouse still doing these? |
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Post by EmRR on Mar 23, 2023 13:56:46 GMT -6
Ah, maybe I am misunderstanding , but if both transformers are designed for the circuit, isn’t it just two or four wires and securing the transformer, zip tie, glue gun ? More like 12 wires. Lots of places for it to go wrong, between removing the original and tearing the PCB traces, or melting the coating off the new wiring while trying to get it into place in a very tight small space. You also have to cut down a metal plate that’s in the way. Since the board layout is for Max’s transformer, you also have to be able to sort out the wire connections from the schematic. It’s tedious. I’m currently too busy to get my tech shop put back together so I can’t really do anything non-emergency (meaning mine! Stat!). Whenever it slows down enough to get a work bench going, I can get back to it. |
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Post by kcatthedog on Mar 23, 2023 14:08:54 GMT -6
Sounds it!!  On one transformer, there are normally 4 and clearly colour coded, what so special about this one ? |
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Post by kcatthedog on Mar 23, 2023 14:15:40 GMT -6
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Post by kcatthedog on Mar 23, 2023 14:27:43 GMT -6
so basically, you would ideally take the board out the frame to replace the transformer for desoldering and removing the stock transformer?  |
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Post by EmRR on Mar 23, 2023 15:06:59 GMT -6
so basically, you would ideally take the board out the frame to replace the transformer for desoldering and removing the stock transformer? Ah, no, that's not a realistic approach. That's not the same board either, though the pin connections are probably the same. If you had that one, you'd have to Dremel a cutout in it for the transformer to sit in there. You see those 16 pins? Those are all transformer wire connections. Look at the U67 schematic. |
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Post by kcatthedog on Mar 23, 2023 15:22:44 GMT -6
I understand . I have built a few mikes, (C12 and mk-u47) psu's and done transformer mods in mikes and compressors.
I posted that pic as an example of something that must be similar.
How does one get the transformer leads unsoldered from the board then, without potentially compromising other solders, what you suggested above.
More like 12 wires. Lots of places for it to go wrong, between removing the original and tearing the PCB traces, or melting the coating off the new wiring while trying to get it into place in a very tight small space. You also have to cut down a metal plate that’s in the way. Since the board layout is for Max’s transformer, you also have to be able to sort out the wire connections from the schematic. It’s tedious.
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Post by sean on Mar 23, 2023 21:08:17 GMT -6
A desoldering iron is your friend. Sometimes a vacuum solder sucker can do the trick
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Post by craigmorris74 on Mar 23, 2023 21:33:52 GMT -6
This mod is quite a bit more complicated than your typical transformer swap. If you don’t have the MK67, and the new transformer, you have no idea of the complexity.
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Post by kcatthedog on Mar 24, 2023 3:17:43 GMT -6
I understand, but it seems like a very oddly designed segment.
Is the original mike like this ?
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Post by EmRR on Mar 24, 2023 6:51:53 GMT -6
I understand, but it seems like a very oddly designed segment. Is the original mike like this ? Yes the boards would almost swap into an original. Much is exact copy. |
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Post by indiehouse on Mar 24, 2023 9:24:12 GMT -6
I have zero bandwidth to do any of these conversions for the foreseeable future. That's too bad but I get it. You did mine during the pandemic when work was cancelled for everyone. indiehouse still doing these? Yes, but since Neumann stopped selling these transformers, it's a moot point. Doug is right, it's tedious and delicate work. There is a lot to it, more than you'd think. It also comes with risk. It's not like you can just go out and buy a replacement PCB. I've lifted a pad on one of these before. And I was super careful. Luckily it was a ground pad, so there were other points to tie into. But that could have easily been another that could have bricked the mic. ineedanswers has an AMI transformer, so the wiring would need sorted out. |
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Post by Deleted on Mar 25, 2023 22:56:39 GMT -6
It gets sent off to OPR Tomorrow =)
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