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It should still be repairable Mike, just not quite as pretty.
The number 23744 stamped on the inside of the voice coil former identifies it as a "light".
Now seeing from a better angle, the leads don't appear nearly as burned away as in the first pic, should be plenty to work with for a repair in that area so long as the rest of the coil is OK.
so the fact that i dented it will not affect its quality???
Also I know before you said there is no replacment for a light phram. I am just wondering what I would do if further damage was to happen to this diaphram, and if i would be completely screwed???
In case that the gentlemen who offered to fix it for me, doesn't contact me do you know anyone who would be good at fixing these?
<font size="2" face="Verdana, Helvetica, sans-serif">It will likely not affect it's performance to an audible degree.Quote:
so the fact that i dented it will not affect its quality???
<font size="2" face="Verdana, Helvetica, sans-serif">By no replacement, i mean that the "light" 23744 diaphram is not reproduced. I'm pretty sure the light diaphram was only made for a short time, they were only factory installed in a couple different models. I suspect they are more fragile and have a shorter normal longevity than the standard aluminum phram.Quote:
Also I know before you said there is no replacment for a light phram. I am just wondering what I would do if further damage was to happen to this diaphram, and if i would be completely screwed???
However, GPA does reproduce the standard thickness aluminum phrams as well as a heavy duty version called "pascalite". I'm pretty sure that the 604 that GPA makes today has the standard aluminum phram, and are pleasing all who hear them.
<font size="2" face="Verdana, Helvetica, sans-serif">Sorry, that one i don't have an answer for. I have a couple phrams in the same boat as your's, and altho i have plenty of soldering experience even on some small stuff, i'm still reluctant to tackle the job myself. Maybe my reluctance will fade when the project involving them nears completion, or maybe i'll just take the plunge for new ones.Quote:
In case that the gentlemen who offered to fix it for me, doesn't contact me do you know anyone who would be good at fixing these?
FWIW, the folks here are of an especially decent variety, i'm pretty sure the gentleman who made the offer will gladly follow thru. Use the "PM" feature here to let him know you want to take him up on his offer.
Well, I was correct, it's a 23744 phragm for sure, the picture cleary shows it, the dent will be pretty repairable too, I used a PDR method (Paintless Dent Repair), if your offer falls through for repair - feel free to contact me. You do have an early 604-8G with metal phase plug, my 8G's and 8H's are both Alnico and have tangerines. Bill Fort also has the early 8G's and he's very happy with them. Here's the worst symbiotik repair ever sent my way, believe it or not, it worked fine after restoration, YES!!
http://www.hostboard.com/forums/hbmc...2007/06/34.jpg
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oh wow you do really good work. How much would u want to fix it for me? My number is 585-690-2128 or 585-663-6529. I could mail it out to you tomorrow to have it fixed.
I have not heard back from the other guy yet, so we see what happens with that. You seem like u know what your doing. Please contact me with your address.
I can paypal you funds or send a money order. My e-mail is [email protected]
You can send me your address to mail it to privatly or you can just give me a call.
Thanks a lot, and I look forawrd to your reply
Hey all,
I've never had to repair the lead wires on one of these phrams. But I'd like to ask, are they copper? And are they coated?
If coated, the coating would have to be removed to solder to.
I think a good RF soldering iron and a good microscope would really make the job a lot easier.
Working for a microelectronics packaging company, we have that fancy equip here. It would be fun to try.
I hope when you get that fixed that the voice coil itself isn't open somewhere else.....that is not repairable.
Ron
Ron, I believe those leads are copper and they are coated, I usually scorch the coating and then scrape the residue off with a razor before fluxing and soldering, intricate work for sure!! Dave.
<font size="2" face="Verdana, Helvetica, sans-serif">I was at work when I posted earlier. I'm now looking at a good symbiotic diaphragm and agree that the leads are copper and are coated.Quote:
Originally posted by dgwojo:
Ron, I believe those leads are copper and they are coated, I usually scorch the coating and then scrape the residue off with a razor before fluxing and soldering, intricate work for sure!! Dave.
I used to be real good at working on microwave modules and assemblies. (not microwave ovens....) 1 mil gold bond wires, 3 mil gold bond wires, tweezers and of course really good stereo microscopes.
When I moved out of that world and into circuit board stuff, the parts started getting smaller and smaller....and my eyes worse and worse. That too became a microscope world. 0603 resistors were visible. 0402 got too small to work on w/o a microscope. Now they have 0201 parts (.020" x .010") and shoot, you can hardly see them!
This is where a good microscope, tweezers and the Metcal or equiv RF smart soldering irons make rework possible. These soldering irons only apply enough heat to melt the solder. And of course you can now get .010" rosin core solder.
So, do you bridge the break with wire? Or just move the two halves closer together and solder the ends together? I know bridging is tough because both halves try to melt at the same time.
If it were me, I'd give our assembly gals $10 and show them what I wanted, and they would make it look like it was never repaired. They do this intricate work all day long. I am sure I could still do it, but only in the AM before coffee!
Ron