2. analog
  3. 167208-21842

Sudden development of more pops than usual. VPI TNT turntable.

Just last night, I suddenly had the onset of frequent pops on any record that I play. They are so extreme that sometimes they lead to my amp shutting down. I recently shortened the belts on my VPI TNT IV (not using the tri-pulley system), and I have noticed increased static electricity when I take records off the turntable. So, I think it could have something to do with that. I therefore grounded the motor, but it still happens. I was thinking next to try grounding the platter spindle. The tonearm is already grounded (all turntable-related grounds to the preamp). I have not heard any pops with the cartridge either free-floating or resting on the record. I am trying a CD player now and have not heard any pops so far. So, I'm thinking it's either the static electricity, cartridge, or something with the internal phono stage (bad capacitor or something). Any thoughts?

My system is: Transfiguration Phoenix, Wheaton Triplanar IV, VPI TNT IV, SDS, Spectral DMA 20 w/ internal phono stage, DMC 180, Rockport Aviors, and Spectral/MIT cables.
128x128ctlphd

Showing 1 response by antinn

antinn
369 posts
 
@ctlphd,

In this thread https://forum.audiogon.com/discussions/flipping-record-causing-series-of-loud-pops the OP traced the root cause to loose ground connections. If you have a multi-meter try measuring the grounds to verify continuity. If this does not fix the problem then,

This time of year, the humidity is high, so all things being equal you would expect record static to decrease. Because this onset followed the new belts, You may want to wipe clean the new belts with some alcohol just in case there is some mold release (or gunk) that "may" be the source - though unlikely - its cheap and fast; and do the same to the platter.

Grounding the platter bearing is always a good action. 1st ground the platter bearing to the pre-amp ground used for the phono. Sometimes, you ’may’ need to ground to the wall outlet.

A similar experience is being discussed  vpiforum.com • View topic - Popping or shorting, and you may get some useful info.
More to discover