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Scan-Speak 13M/8636 - sudden death
Scan-Speak 13M/8636 - sudden death
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Old 7th August 2017, 06:34 PM   #1
sorenb is offline sorenb  Denmark
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Join Date: Apr 2010
Scan-Speak 13M/8636 - sudden death
Default Scan-Speak 13M/8636 - sudden death

There are an old thread where another experience the 13M/8636 suddenly died, apparently without any cause. Here
I disassembled mine for a closer look.
Using a sharp surgery knife, I was able to carefully lift the rubber surrounds from the basket, and do the same with the spider.
The tricky part is to get the knife under the rubber/fabric without cutting.
When the rubber/fabric is lifted a bit, the rest comes off rather easily.

Click the image to open in full size.
Click the image to open in full size.

Here's the one side wire going from the coil to the litze thread:
Click the image to open in full size.

And the other side, where the wire from the coil reveals to be corroded (all black and swollen):
Click the image to open in full size.

Removing a bit of glue to expose the wire itself revealed that the wire is simply falling apart when being touched,
Click the image to open in full size.

I decided to remove it all.
After carefully having removed the glue this is how it looks:
Click the image to open in full size.

Turned out that the wire was more or less corroded through the spider.
Scraped the lacquer off the piece of coil wire where it seems solid and soldered a replacement wire
Click the image to open in full size.
Click the image to open in full size.
The wire and solder points has been soaked in glue, similar to the un-damaged side.

Have tested the driver, having the rubber surround and spider hold in place using a bunch of clamps, and it seems to work just fine.
However, I still need to find some way of removing the old glue from the spider, before glue it again.
Any ideas?
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Old 7th August 2017, 06:36 PM   #2
sorenb is offline sorenb  Denmark
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Join Date: Apr 2010
Scan-Speak 13M/8636 - sudden death
Phoned Scan-Speak about the problem.
Basically Scan-Speak points to the one year warranty, and points to some third party speaker repair shop.
Even though this looks like a fault in production, and even though there are a number of this particular unit showing the exact same fault, Scan-Speak will not provide any support beyond the 1-year warranty.
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Old 8th August 2017, 09:45 AM   #3
ctrlx is offline ctrlx  United Kingdom
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Join Date: Jul 2012
i repaired my 13m's in 2003
the braid from the back of the cone to the connection tags had failed.
i had about 2mm of voice coil wire on the cone to make a joint to the new braids. (i got my donor braids from some cheap pa speakers)
therefore i would not reuse the old braids even if they look/test ok
also i replaced the speaker tags with 1/4" connectors.

Last edited by ctrlx; 8th August 2017 at 09:56 AM.
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Old 8th August 2017, 10:11 AM   #4
sorenb is offline sorenb  Denmark
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Join Date: Apr 2010
Scan-Speak 13M/8636 - sudden death
Quote:
Originally Posted by ctrlx View Post
... i would not reuse the old braids even if they look/test ok
What is your reasoning behind not using the original braids?
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Old 9th January 2018, 08:04 AM   #5
iaae is offline iaae  Norway
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Join Date: Sep 2009
Location: Møre & Romsdal,, Norway
I have also experienced sudden death of my 13M again. Managed to get hold of a pair used two years ago, all happy until now. Again one died yesterday. So what do I do here? Looks a bit over my experience to start a total rip out of the driver like shown here, but I am willing to try. I bet the open circuit is caused by the same reason. Have ben in contact with SS for alternative driver without luck.

Do anyone have a tip to me for repair of these or a direct fit replacment without any crossover work please. I have seen that the Dayton RS125 has been used and Madisound has got a adapter version of Scan Speak 10F/8424G00

Or is better to try to repair the corroded wiring myself (cheaper at least), afraid of the assembly again, to get the cone centered etc

All the best, hoping for some ideas please
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Old 9th January 2018, 07:11 PM   #6
ctrlx is offline ctrlx  United Kingdom
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Join Date: Jul 2012
if it is due to the braid from the back of the cone to the connection tags, you may be able to repair it without removing the cone etc from the chassis......
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Old 9th January 2018, 08:36 PM   #7
sorenb is offline sorenb  Denmark
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Join Date: Apr 2010
Scan-Speak 13M/8636 - sudden death
Quote:
Originally Posted by iaae View Post
I have also experienced sudden death of my 13M again. Managed to get hold of a pair used two years ago, all happy until now. Again one died yesterday. So what do I do here? Looks a bit over my experience to start a total rip out of the driver like shown here, but I am willing to try. I bet the open circuit is caused by the same reason. Have ben in contact with SS for alternative driver without luck.

Do anyone have a tip to me for repair of these or a direct fit replacment without any crossover work please. I have seen that the Dayton RS125 has been used and Madisound has got a adapter version of Scan Speak 10F/8424G00

Or is better to try to repair the corroded wiring myself (cheaper at least), afraid of the assembly again, to get the cone centered etc

All the best, hoping for some ideas please
Don't expect any kind of support from Scan Speak; in fact, when I was in contact, they kept asking for photos and information about the fault, as soon as I had sent everything in, they just replied that they don't support since the product was out of warranty - so please help us understand the F***ups we have done, but don't expect anything back.

You might be able to repair it without a complete disassembly.
Check out where the wires discontinue ...
Using a sharp knife (surgery) it is rather 'easy' to scrape/pull some of the glue away from the wire that goes along the back of the cone, and then you can test for continuity
In my case the discontinuity was very close to the coil, which is why I needed to disassemble the driver completely. You might be more lucky.
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Old 11th January 2018, 12:20 PM   #8
ctrlx is offline ctrlx  United Kingdom
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Join Date: Jul 2012
sorenb, did you manage to reassemble the driver successfully after your repair?
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Old 12th January 2018, 07:10 AM   #9
iaae is offline iaae  Norway
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Join Date: Sep 2009
Location: Møre & Romsdal,, Norway
Yes, so do I wonder ctrlx, The easiest is always to take things apart by experience :-)

To be honest, on both 13M drivers, the flexible positive wire is off and severe corroded halfway down the cone. It can possibly be soldered a new thin wire and hook it back to the flexible wire. But I am a bit afraid the heat will harm the cone. Well, I dont have so much to loose either way. It will for sure be an advantage not to rip the unit apart.

Again I am a bit tired of the whole situation, and could be very happy with a replacement for the 13M's. The big question is: will any other brand or SS driver fit in physical and electrical? Again, I am not sure if any has been looking into this, and found the needle etc?

All the best
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Old 12th January 2018, 06:05 PM   #10
ctrlx is offline ctrlx  United Kingdom
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Join Date: Jul 2012
there is not much space between the back of the cone and the spyder. I used some alu foil to protect them from heat. I melted off the blob covering the vc/braid joint. after that if you have vc continuity, you can fit new braids. Other wise consider selling the drivers. members here will be happy to help you with suggestions for an alternative driver (and xover fix)
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