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NS-1000M repair

M

molecules01

New Member
I just got a pair of NS-1000M, and each speaker has a problem: One speaker has no sound coming out of the tweeter ( the tweeter itself works), and the other speaker has no sound at all and the woofer is frozen. Any advice on where to start ?
 
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molecules01 said:
I just got a pair of NS-1000M, and each speaker has a problem: One speaker has no sound coming out of the tweeter ( the tweeter itself works), and the other speaker has no sound at all and the woofer is frozen. Any advice on where to start ?
Click to expand...

1. Woofer has a shifted magnet. AK google search "magnet shift" for repair " how to"
2. Inspect both the crossovers for broken wires or disconnected wires , burnt -overheated components or Corrosion.
 
molecules01 said:
the woofer is frozen.
Click to expand...

Yamaha used a crappy glue to glue the magnet to the frame and a good bump while moving or shipping them can cause the magnet to shift or even break free. Luckily these aren't mine.

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:yikes:
 
NS-1000 Repair

Thanks for the information. I already found a wire that was broken off, didn't fix the problem, but I will keep at it, then I'll have a go at the woofer.
 
NS -1000 repair- soldering

Any tips for soldering. I remember you heat the with the tip and then touch the solder to the wire. The wire never gets hot enough. i bought a new Weller and I still have the same problem.
 
molecules01 said:
Any tips for soldering.
Click to expand...

Which driver are you soldering to? I don't know this for a fact but I believe Yamaha used silver solder on the speaker lugs; silver solder has a higher melting point.

If you've never soldered before practice on something else first because the wires coming from the speaker voice coil are fragile and it wouldn't take a lot to damage them. Get some solder-wick and an old PCB with some thru hole parts and practice wicking the solder off the board without pulling the traces. Then practice soldering on that board and once you have some technique clear the speaker lug of any old wire and solder by heating the lug and wicking away the solder. Cut the end of the broken wire and strip about 1/4" of insulation being careful not to break any strands. Feed the stripped end thru the lug and wrap it at least twice. Heat up the lug carefully with your iron and once hot, feed the solder to the lug again being careful not to over heat anything. Trim the wire end as needed and you should be good to go. :thmbsp:
 
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