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Cartridge alignment 101 |
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tg [RIP]
Moderator Group Joined: 19 Jan 2008 Location: Sydney Status: Offline Points: 1866 |
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While I would initially be inclined to think that the cartridges might be faulty - a complete absence of signal on one channel would not be a misalignment issue - you say you have a number with this issue.
I would ask first is it the same channel on all of them ? - if so it might indicate an issue with your tonearm wiring or phono stage.
Another possibility if you use removeable headshells that I have experienced from time to time is that the spring loaded contact pins in the tonearm may sometimes fail to make a good contact with the headshell pins and one channel will be AWOL after changing headshells, removing and replacing the headshell a couple of times usually seems to fix the problem. |
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Tony G
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itsmanhattan
Regular Joined: 19 Apr 2017 Location: Los Angeles Status: Offline Points: 76 |
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Yeah I've trouble shooted out the tone arm, speakers, amp, etc. It definitely is something to do with the cart or headshell connections or possibly the needle has finally gone caput!
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Manhattan
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Drewan77
Senior Member Joined: 25 May 2013 Location: Chester,England Status: Offline Points: 1544 |
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Older than I once was, younger than I'll be
............................. Andrew |
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RichieCactus
Regular Joined: 18 May 2017 Location: Surrey Status: Offline Points: 47 |
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I used to have a similar problem with my Thorens deck - occasionally the right channel would go to 1/2 volume.
The problem completely disappeared when I replaced the original Thorens arm for the AudioMods arm. So I'm pretty sure it was the tonearm wiring... so worth checking there... good luck ! Rgds RC |
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Rega RP8/Cartridgeman MM3/Thorens TD166/AudioMods VI/Accession/Croft RIAA/Arcam A85/Quad 21L
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Fatmangolf
Moderator Group Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 8960 |
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You may be able to confirm this is electrical by carefully turring the volume up high with the arm in the locked postion and not playing a record. The good channel will have a light hiss possibly a little hum with the amp close to maximum volume. The other side will either be noisier probably with more hum due to an open i.e. broken connection or much quieter if the cartridge output is shorted to ground.
With the volume off I suggest taking the headshell off and carefully swapping the headshell leads over, for which tweezers may be helpful! I'd start by checking how they are connected now and mkaing a quick drawing. It is worth checking the leads are correctly connected first. The easiest way to swap the wiring is to unplug the red tag from the red cartridge pin and connect it to the white pin and vice versa, green to blue. If it's the cartridge you'll hear music from the other speaker. If it's the headshell the music will come from the same speaker as before but will be from the other channel in the cartridge. Apologies if I've just stated the obvious to you and you've already done this. |
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Jon
Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC. |
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itsmanhattan
Regular Joined: 19 Apr 2017 Location: Los Angeles Status: Offline Points: 76 |
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Thanks guys. I'll take another look - god I hope that it's not the tone arm!
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Manhattan
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