hatehifi
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Age: 59
Location: likely, Germany
Posts: 5372
"fascinating times in which we are living"~grandad
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« on: July 09, 2012, 07:39:36 AM » |
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As some know, I have a P77 arm which up to the other day worked perfectly. Trying a new cartridge [I strongly] believe that one of the two ground wires just in back of the 'SME' collar, inside the arm broke. I have checked all other connections including headshell and inside the base collar (the plug) and looks fine.
Any suggestion as to how to remove (and be able to put it back) the plastic plug socket at the end on the arm shaft? Any idea how long the wiring cables are inside?
Thanks!
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John
Little Feat (Mercenary Territory)
"I've did my time in that rodeo. It's been so long and I've got nothing to show.
Well I'm so plain loco, fool that I am I'd do it all over again."
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wer
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« Reply #1 on: July 09, 2012, 08:12:31 AM » |
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Hi John,
Have you checked whether the stubs in the arm part of the SME connector still have working springs? I already have a couple where one of the springs failed and the metal stub does not pop back after you depress it. Sadly it does not make proper contact when the headshell is screwed on.
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Werner
No esoteric audio equipment (except for my wife)
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hatehifi
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Age: 59
Location: likely, Germany
Posts: 5372
"fascinating times in which we are living"~grandad
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« Reply #2 on: July 10, 2012, 08:31:19 PM » |
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Hi Werner,
Sorry I just now saw your answer (somewhow overlooked under 'answers to your...').
I really don't know how to check. The headshell pins fit nicely. Also, when I got the arm I sprayed (thanks to Scott) some Craig contact cleaner in them for good measure. To me it just looks like 'female' sockets. There are springs back there? Sorry that I am so novice.
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John
Little Feat (Mercenary Territory)
"I've did my time in that rodeo. It's been so long and I've got nothing to show.
Well I'm so plain loco, fool that I am I'd do it all over again."
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wer
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« Reply #3 on: July 10, 2012, 09:23:37 PM » |
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The four studs in the arm part should depress about 1 mm (pencil?) and spring back when the pressure is released.
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Werner
No esoteric audio equipment (except for my wife)
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ecosprog
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Location: Up the mountain, Spain
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« Reply #4 on: July 10, 2012, 09:26:55 PM » |
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John have to got a multimeter handy. If so, I would check continuity within the heashell and then the arm. At least this way you can work out exactly exactly where the fault is. I think it is unlikely that the arm wiring is at fault. It is more probably the headshell wiring, or an issue with the connectors.
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Reese
Leaving small footprints
Lenco Evolution, EAR 834P clone phono stage, Khozmo passive preamp, DIY chip amp, Saba Resos
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ecosprog
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Location: Up the mountain, Spain
Posts: 1765
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« Reply #5 on: July 10, 2012, 09:28:20 PM » |
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The four studs in the arm part should depress about 1 mm (pencil?) and spring back when the pressure is released.
No studs here Werner, only sockets for the pins.  |
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Reese
Leaving small footprints
Lenco Evolution, EAR 834P clone phono stage, Khozmo passive preamp, DIY chip amp, Saba Resos
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hatehifi
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Age: 59
Location: likely, Germany
Posts: 5372
"fascinating times in which we are living"~grandad
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« Reply #6 on: July 11, 2012, 09:46:10 AM » |
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John have to got a multimeter handy. If so, I would check continuity within the heashell and then the arm. At least this way you can work out exactly exactly where the fault is. I think it is unlikely that the arm wiring is at fault. It is more probably the headshell wiring, or an issue with the connectors.
Okay, and of course you are right. When I get a peaceful mement I'll unpack two full boxes of unpacked hifi 'suff' including a multimeter (and my cleaning tools - IC spring cleaning  )... Will revert asap. Thanks for the shove, Reese. |
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John
Little Feat (Mercenary Territory)
"I've did my time in that rodeo. It's been so long and I've got nothing to show.
Well I'm so plain loco, fool that I am I'd do it all over again."
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wer
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« Reply #7 on: July 11, 2012, 12:10:36 PM » |
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No studs here Werner, only sockets for the pins. Thank you Reese, just had to open my mouth again without knowing  |
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Werner
No esoteric audio equipment (except for my wife)
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hatehifi
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Age: 59
Location: likely, Germany
Posts: 5372
"fascinating times in which we are living"~grandad
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« Reply #8 on: July 19, 2012, 03:29:23 PM » |
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Just a note that we can close this 'dodgy wiring' thread. Two of the four wires were disconnected at the plug below the pivot inside the arm. Dirk, at my friend's shop (Art&Voice), did the dirty work and it is fixed now. 
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Logged
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John
Little Feat (Mercenary Territory)
"I've did my time in that rodeo. It's been so long and I've got nothing to show.
Well I'm so plain loco, fool that I am I'd do it all over again."
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