grounding internally introduces noise into the audio signal which is output directly to the pre-amp. this is exactly why panasonic grounded it separately. while the grounding circuit shows continuity between these points, one should not internally ground to the audio output...unless you're into noise.

I had the rca, power and ground replaced on a 40 year old Dual 620c and well worth the money

Internal grounding is not a good practice.

Still best to have a traditional grounding wire though

Thanks for cleaning the board. To many videos do not do or show that step.

I have done this mod using an rca plate bolted into the existing circular plate ,the rca plate costs £2 . This a great way to match the capacitance of cabling to the input of a mixer .

And after this modification, you'll have to use a soldering iron to open the turntable ! I prefer the original system, because it's one less connection, just replace the original cable with a better one, and the upgrade is even better ! 😉

Hi Stefano. This is Lukas from 1210 group. Cool video and mod. It doesn't look very difficult to fit them in. All the best!

As great as the mod idea may be, I have a hard time believing it's worth $200 each. And anytime the turntable will need service, you have to unsolder it! I may work on my own removable version.

I've serviced 100s of pairs of 1200s I no longer recommend the internal ground as not all mixers share the same ground and ive found the decks to be quieter with a standard ground, a nice heavy spade and some quality heat shrinking will make a ground cable last many many gigs for years.

wouldn't adding another set of connections result in some loss of signal?

Great video! But I was wondering what did you use to clean the board with when you finish desoldering? Liquid?

Thank you great job.

Let me guess, after this mod you experienced hum/noise/distortion when listening to a record right? What? You paid $200 for this? WTF?

169.- ? only this small peace of plastic....Serious? Come on, we get ripped off ever day all day :D

If you are doing regular stuff... You can use this method. But you are doing " Recording " or " DJ's " or " Video Dubs, etc... " than the " Ground Wire " should always be separate.

bravissimo

You are founding the negative side of just one channel, why would you do this? You re more likely to introduce ground currents into the sensitive high impendence cartridge circuit. Where did you get the idea that this is an improvement? The turntable had a proper ground already installed which was intended to tie the ground of the turntable to the ground of the following equipment whether its an amplifier or a preamplifier. I bet the design engineers would shake their heads in disbelief if they ever watched this video. .

Great video and looks like a great product.... BUT... Why didnt you show a close up of soldering the out RCA plugs? The video was perfect until the very end and then you lost me.. Too bad.

Good idea, but 170 for one deck? I think its much to much...

I love the background song. Could you please tell me what it is?

Nice job ... but 199 Euros (plus cost of a technician if you can';t do it yourself) is a bit excessive! ... and Manny Ross makes a good point - have to be desoldered if you need to get inside the deck again! Would be better with sockets but then that would add another 100 Euros :-)

what is the stuff in the blue tip after you removed the solder

Love the song! Can anybody tell me the name/ artist??

Why also AC outlet ..? :P

internal ground is not working with rotary mixers at all

Vorrei apportare la modifica su un Audio Technica AT-LP120 mi preme sapere se il foro d'innesto é similare al Technics SL1200 come mostrato in video.

You have connected earth to minus on left cable this is common all u will do is introduce noise it is not earth that is why it is separate you will pick up noise that u cant get rid of

Hum city brother.....

What's in the syringe?

Shouldn't you also bridge the ground for the right channel (red) to prevent hum on one side of the signal when using the SL's with DVS? I want to do this myself and someone told me it's better to ground right and left to prevent earth hum on one side of the signal when use=ing DVS records.

very expensive for a simple custom.

sorry but it's so stupid, you only get noise in youre left channel ...

Don't internal ground, just horrible; keep the signal grounds and chassis grounds separate even though they show continuity with a VOM.

Looks more than a downgrade than an upgrade to me.

Completely wrong and trying to sell you snake oil

199 Euro?