Technics 310MC - poorly!

[Martian Sunrise]

I have one of these that has recently stopped worky through one channel. The cantilever is also off-centre, but doesn't appear to be bent/kinked.

Can suspension issues cause these problems?

Is it worth fixing?

WIN_20200817_13_10_16_Pro by Richard Howard, on Flickr
WIN_20200817_13_09_00_Pro by Richard Howard, on Flickr
WIN_20200817_13_04_52_Pro by Richard Howard, on Flickr

 

[torstoi]

Looks as if the wire to one channel has given up & probably what you see is the missing tention from the broken wire.
You could beep the channels through by smallest resistance setting on your voltmeter,
you should have small but similar resistance readings at two channels if a cart is ok,
and of course endless resistance between the channels.

So your's should have a small amount of resistance at one channel
and I think endless resistance at the other as well als between both,
so 3 times endless and one Ohm reading only.

Shame, such a nice system, I love those..wonder since a while who'd be up to refurb them really competently.

I have the counterpart btw..my windings and generator is ok, but spit out it's diamond..so it's a bit toothless.
Weak SL10 tangential tonearm lift suspension desease..once the silicone damping is cleaned off by 'professionel repair competence', the cartridge drops like a guillioutine..

Your diamond looks still fairly ok to me, don't think it's the suspension though.

 

[Arkless Electronics]

Ouch! I hope my 300MC doesn't copy it!

 

[eddie pugh]

I have another one here from my brother in laws SL10 that dates back to 1979 that has lost one channel.

I was convinced it was the MC/mm switch on the SL10 or the muting reed relay but when I tried my own exact same cartridge in his turntable both channels were loud and clear

He has opted for a replacement TP4 Grado Black MM cost about £100 and has now left me with a dilema as to what to do with the ailing 310MC

I've just dropped Dominic at Northern Analogue an e-mail asking if he has any experience of repairing these gems

Sound Smith in the USA has repaired some 310MC's according to a web post I found

Let us know how you get on

 

[Martian Sunrise]

Will do.

I am pretty annoyed with myself, as I had one with very few hours in it that came with my first SL10. I sold it.

 

[gassor]

I have an 'unused' 310MC in the classifieds

 

[eddie pugh]

Sadly Northern analogue have confirmed that they have not had any luck opening up the P Mount Technics 310MC

eddie

 

[Martian Sunrise]

oh, balls. thanks for reporting back...

 

[Fergus]

This guy has had some success rebuilding and retipping this cartridge.

http://rover.ebay.com/rover/1/711-5...0001&campid=5338728743&icep_item=184488058772

 

[eddie pugh]

Thanks for pointing this out. I've made contact with Joseph and will soon be sending him my half dead cartridge to see if there's a possible fix.

eddie

 

[Fergus]

Excellent. He did a lovely clean and retip on my Shelter 501.

 

[Fergus]

Thanks for pointing this out. I've made contact with Joseph and will soon be sending him my half dead cartridge to see if there's a possible fix.

eddie

Hi Eddie. Any word from Jospeh yet?

 

[eddie pugh]

Fergus

I screwed up big time and somehow broke the cantilever while trying to make a safe "cell" to protect the cartridge during shipping to Joseph. I just don't know how I did it !! I had no stylus guard and had to do something to secure the tip but it all went wrong

With a broken cantilever and down on one channel I agreed with Joseph that it was probably a no hoper

Eddie

 

[Fergus]

Commiserations. Sadly these things happen.