2. analog
  3. 147418-7

Cartridge issues need suggestions

I am having issues with my Transfiguration Proteus - the left channel is cutting out.  It starts with a strong center  image then in a few seconds it drifts to the right intermittently, almost like someone is turning the balance control very fast.  Then it stays far right but I still have faint output in the left channel and sometimes some feedback like the stylus is out of line. 

It is not my tubes in the phono section because I checked that with my backup and it does the same thing.  I have rechecked overhang, cantilever alignment with my protractor, VTF - nothing has changed.  The only thing I haven’t adjusted is anti-skate and haven’t since initial setup.  Azimuth is set on a Basis Vector 4.  I took it off and upon visual inspection the it looks ok - the cantilever is straight but it might have shifted slightly to the left.  I can’t be sure.

Anyone had this issue - I never have...thanks for any feedback!
pops

Showing 2 responses by moonglum

moonglum
619 posts
 
Pops,
Yes I think an autopsy is a good idea.

Bear in mind that if you apply a soldering iron to make sure no residual solder actually makes contact. (Gold can/will diffuse into solder although that comment applies to old-fashioned tin/lead.)

My first thought was to suspect the coil/s but I would have expected a complete O/C rather than intermittent signal. As a matter of interest does your captive tonearm cable terminate at the base of the tonearm or continue all the way to the pre-amp?
moonglum
619 posts
 
Pops,
I was adding to NoRomance’s suggestion (and your agreement to try it) a note of caution depending on the vintage of your soldering gear ;)

I personally am not proposing that you apply a soldering iron to your cartridge pins. I would suggest getting the cart checked first.

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