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View Full Version : How I repaired an 035Ti. Hope this is helpful.



Johnny_Law
09-13-2016, 09:33 PM
Hopefully the pictures will tell the story. One of the 035Tis in my 4412s stopped singing and tested open. So I took it apart and found the terminal leads had broken while the voice coil itself was still fine. So I took single strands of speaker wire and soldered them in place. Fixed. I hope this helps anyone now or in the future with an open 035Ti and likely other tweeters too.

Opening it up: two broken leads.

http://imgur.com/emARDTUl.jpg

Ready to operate.

http://imgur.com/MpAPbYul.jpg

Grab a strand.

http://imgur.com/YCx3FZfl.jpg

Add some solder.

http://imgur.com/xBXd6NAl.jpg

In the slot and soldered to what remains of the original lead.

http://imgur.com/5qhuortl.jpg

http://imgur.com/DuAdm1Vl.jpg

Got creative with the other side to get more solder on it. Ugly but works.

http://imgur.com/UbCIM0Jl.jpg

Glued them both back into the channels.

http://imgur.com/pnWFuVtl.jpg

Going back together.

http://imgur.com/VX5pZmhl.jpg

http://imgur.com/nxDOaMml.jpg

Cont ...

Johnny_Law
09-13-2016, 09:35 PM
Back in the 4412 (ignore the rusty screw heads, I owe a call to the JBL service dept to order new ones).

http://imgur.com/8cIEsRFl.jpg

http://imgur.com/bFjLSMGl.jpg

Sounding great with my C24 and JBL/UREI 6260 taking over for the MC502.

http://imgur.com/SAlDb1cl.jpg

I'm just a tinkerer and this is far from pro work, but I hope this helps anyone with a dead 035Ti or similar tweeter, a soldering iron, and a can-do attitude. :bouncy:

Cheers,
Ryan

Jennifer
09-14-2016, 02:37 AM
Nice photos of how you did that... SAVED from trash heap! Bravo


;)

Jennifer

svollmer
09-14-2016, 06:11 AM
Tips and tricks like that, especially well-documented with pictures, are always welcome and helpful. I have a couple of my own to fix. Thanks Johnny!

Ed Zeppeli
09-14-2016, 07:58 AM
I did the exact same fix on my 4208s with the 031TiS. Thanks for posting all the details.

Warren

Ed Kreamer
09-14-2016, 08:33 AM
Thanks! I've got 3 that need repair.

Ed

gdmoore28
09-14-2016, 11:51 AM
Good work, Johnny! Especially well-documented and photographed! Thanks.

GeeDeeEmm

mech986
09-14-2016, 08:12 PM
Nice work! Recommended to replace the foam cylinder insert if it's squished and turning to mush. I was looking at some 1/2" tall open cell polyurethane foam that was relatively soft (green color) but wondered if it was soft enough. Also whether it would hold up in a tweeter's heated environment?

Johnny_Law
09-15-2016, 11:26 AM
Thanks all very glad this is well received. On the foam, I was fearing the worst but mine thankfully seemed to still be OK. I've read advice that the telltale signs of compromised foam is shrill high notes which I'll be on the lookout for. (Vifa used similar dome backing, albeit a more dense material was used, underneath tweeter domes in late 80's early 90's era Paradigm / Snell speakers too.)