I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

transition said:

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

Tau.Neutrino said:

transition said:

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

does that PCB have a grounding/earth point?

Tau.Neutrino said:

transition said:

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

maybe some of your earths are wrong.

Tau.Neutrino said:

transition said:

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

If I move the tonearm towards the motor the hum increases, move it way the hum starts to go away.

transition said:

Tau.Neutrino said:

transition said:

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

does that PCB have a grounding/earth point?

Im not sure.

Its got a 24 volt dc input.

I will have a look it it.

Tau.Neutrino said:

Tau.Neutrino said:

transition said:

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

If I move the tonearm towards the motor the hum increases, move it way the hum starts to go away.

fairly good indication, but doubt you’t want the PCB and motor floating, because the plugpack PS will probably have some AC coupled through, so maybe an earth in the right place is required.

transition said:

Tau.Neutrino said:

Tau.Neutrino said:

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

If I move the tonearm towards the motor the hum increases, move it way the hum starts to go away.

fairly good indication, but doubt you’t want the PCB and motor floating, because the plugpack PS will probably have some AC coupled through, so maybe an earth in the right place is required.

Would an earth wire connected to the DC motor casing work?

Bogsnorkler said:

Tau.Neutrino said:

transition said:

50cycle hum?, same as mains, if DC motor unlikely to be coming from that

I have a 24 volt power supply going to the DC motor

its the same one as this

https://www.aussiehifi.com.au/products/rega-24v-motor-upgrade-kit?variant=45080119367

maybe some of your earths are wrong.

I’ll get an electrician to checks the earths.

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

cut two washers from the plastic packaging thta comes on everything. Pull the motor apart and place the two washers on the rotor shaft inside the bearings.

roughbarked said:

Tau.Neutrino said:

I have a noisy dc motor that my turntable cartridge picks up

Would a piece of aluminum foil under the record mat stop the stylus from picking up the hum?

Or is there another way to stop the stylus picking up the DC motor hum?

cut two washers from the plastic packaging thta comes on everything. Pull the motor apart and place the two washers on the rotor shaft inside the bearings.

This is how I used to quieten the Copal digital clock motors.