Turntable Guru's, question....
treitz3
Posts: 19,476
I have recently gotten the vinyl rig back up and running and last night I discovered that my Music Hall MMF-5 motor makes some kind of noise. It seems it only does this when it gets hot, as I'm running it now and she's dead quiet.
Is this common for TT's to do this or is there something that I should look for when troubleshooting this?
The best way to describe it would be kind of a hum with a slight vibration-type sound but with no vibration. Not really audible from 2 feet away but this is something that is not normal and that needs correcting. The sound does not get into the amplification and it is not audible through the speakers. Any of you have any advice or experienced this kind of thing before?
Is this common for TT's to do this or is there something that I should look for when troubleshooting this?
The best way to describe it would be kind of a hum with a slight vibration-type sound but with no vibration. Not really audible from 2 feet away but this is something that is not normal and that needs correcting. The sound does not get into the amplification and it is not audible through the speakers. Any of you have any advice or experienced this kind of thing before?
~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
Post edited by treitz3 on
Comments
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I do not think that is normal. I have left my clear audio motor on all night accidentally of course but is stick quiet and smooth.
Suspect bearings are getting dry or something. Have you checked the speed to see if it is affected?Speakers: SDA-1C (most all the goodies)
Preamp: Joule Electra LA-150 MKII SE
Amp: Wright WPA 50-50 EAT KT88s
Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
Cables: Mits S3 IC and Spk cables| PS Audio PCs -
No, I haven't done that. Don't really know how to do that, to be honest. The speed of the LP's do not sound slow or altered. I'm surprised that when I heard it last night, that everything seemed to be like normal, just with this foreign noise from the motor. It's been on for the past three or so hours and not a peep from it so far.
I was running it for close to 12 hours or more yesterday, constantly.~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~ -
Friction=heat so i would think that it needs lubed.
Is it belt drive? Maybe the belt is slipping a bit on the pulley to create friction and heat as well.
i'm no expert but it's what i would check first.
Good luck.Main Rig-Realistic AM/FM Record player 8 track boasting 4 WPC
Backup Rig-2 CH-Rogue Audio Zeus w/Factory Special Dark Mods,Joule-Electra 300ME Platinum Preamp,OPPO-105 w/Modwright Tube Mod, Auralic Aries G2.1,Polk 2.3TL,3.1TL's,Dreadnought,RTA-15TL's,1C's All Fully Modded,2xRTA-12c's ,Benchmark DAC3 HGC,Synology NAS,VPI Scout w/Dynavector DV-20XH and Rogue Audio Ares Phono Preamp,Sony PCM-R500 DAT,HHB-850 Pro CDR,Tascam CC-222SLMKII Cassette/CDR,MIT S3.3 Shotgun Cables,Shunyata Hyra-8,Shunyata and Triode Labs Power Cords
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Friction=heat so i would think that it needs lubed.
Is it belt drive? Maybe the belt is slipping a bit on the pulley to create friction and heat as well.
i'm no expert but it's what i would check first.
Good luck.
+1, most likely it needs a couple drops of sewing oil, I don't know where you put it on that TT. Look for a small hole on the motor. Could be a belt issue causing it as well. Good Luck!Thorens TD125MKII, SME3009,Shure V15/ Teac V-8000S, Denon DN-790R cass, Teac 3340 RtR decks, Onix CD2...Sumo Electra Plus pre>SAE A1001 amp>Martin Logan Summit's -
Just lubed up the armature and I will keep it running constantly until tomorrow AM. Thanks. Will update then.~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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Might check your spindle oil too. May be low and put more drag on belt and motor. Oh btw, I am no TT guru.Speakers: SDA-1C (most all the goodies)
Preamp: Joule Electra LA-150 MKII SE
Amp: Wright WPA 50-50 EAT KT88s
Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
Cables: Mits S3 IC and Spk cables| PS Audio PCs -
Obviously, either am I. Well, it failed already. Right about after hour 6 or 7....about 3 hours after lubricating the motor armature. I'll wait for some other possible suggestions and then tear into her after I chat with MH on Monday. Was just hoping to find something to remedy the sound this weekend. No biggie.
I might have a spare belt around here somewhere. I'll see and check that avenue also since it wasn't the armature of the motor.~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~ -
Check the platter spindle, may need some oil. My ca say to add a drop or two every couple of years.Speakers: SDA-1C (most all the goodies)
Preamp: Joule Electra LA-150 MKII SE
Amp: Wright WPA 50-50 EAT KT88s
Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
Cables: Mits S3 IC and Spk cables| PS Audio PCs
