9 X/10 this is fixed by replacing the RCA plugs at the end of the output cable. Neutrik/Rean ones from Parts Express are fine if you can solder them on. Old Dual changers had the plugs at both ends, making it easy to just replace the entire cable, but IIRC, the 604 has the internal connection direct to a terminal block.
using DeOxIt on the cartridge tags is a good suggestion as well.
Replacing tonearm cable - Dual 604
I gave my son his grandfather’s old Dual 604 turntable. But there’s a short (hum) in one of the channels. I’m not sure where the short is (it changes sides when I swap the connections on the back of his receiver). I suppose it could be in the cartridge which is also at least 40 years old. It works for a while then the short appears. I’m thinking of replacing the tonearm cable first but am wondering if this is doable on this table given the construction. I’m not sure the tonearm can be easily removed but I’m handy and there’s not much to lose at this point.
Anyone have thoughts on this? I haven’t gotten into it yet but it doesn’t look nearly as simple as on my Clearaudio Innovation table.
Other things I should try first?
TIA
mgrif104
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- 16 posts total
Thanks @dynacohum I actually did try replacing the rca plugs at the end of the output cable. Same result. It’s not a changer table and so the cable has plugs only at the one end. There’s a junction box of sorts under the deck where the tonearm cable is pinned and the output cable is soldered. I’m going to try replacing the cartridge with an inexpensive sumiko while also cleaning the contacts along the way as suggested. Fingers crossed.
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Thanks @audihifi Interesting that you experienced the same issue on this model. And, good to know you were able to fix it. Best,
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- 16 posts total