[Help] Turntable Hum Problem (Pro-ject Debut Carbon)

[Morphy]

I've tried like this:

And that didn't work, the hum remained.

I also wanted to show this:

You can also try jumping a wire from the "start of the black cable" to the grounded thumb screw. If the hums stops --- there's a problem of wiring within the tonearm.

The turntable is currently being connected from the grounded thumbscrew at the back of the turntable to the phono pre-amp's thumbscrew?

Yes! Just like that as you've said.

I'm gonna try that also, to isolate the possibility of problem of wiring within the tonearm.

 

[Morphy]

Woooooohoooooooooooooooooo!! I've got it :'DDDDD

 

[Morphy]

Aaaaaaaaaaaand nightmare continues. Now I don't have signal on my left speaker, 0 sound coming from the turntable. I'm guessing it's because I've used that WD-40 spray...

So to clean it, I should get some CRC spray?

 

[Mr Boochie]

Do you have another RCA interconnect you can try between the turntable and the pre-amp? You have compressed air in a can? May want to try and blow off any excess WD-40 you may have got into any connections (phono, pre-amp, amp, speaker cables). I like CAIG Deoxit D100 solution, not the spray. Just use a very little and work it into the connections by lapping or turning each connector several times. I'm pretty sure this is a connection issue, somewhere in your system's chain of units.

https://www.amazon.com/CAIG-LABORAT...=1&keywords=deoxit+d100&qid=1586765691&sr=8-1

 

[Morphy]

I've tried using the compressed air just now and it didn't helped. I've also swapped some RCA cables and I'm 100% sure that the signal is not coming out from the turntable's red (right) channel or my left speaker. Is it possible that WD-40 spray have caused that? I did spray him into that channel and not the other one that works.

I have found that Deoxit solution here, it's a bit pricey but I'll order it right now if it will fix the issue.

 

[Mr Boochie]

How much WD-40 did you spray into the what part of your unit?

If you grab the RCA connectors by where the jack and plug insert into each other and GENTLY move the connection --- can you get partial volume back in that bad channel? If so, you may have a bad solder point (perhaps exacerbated by the WD-40?) somewhere on the jack side of the connection (pre-amp or phono side).

 

[Morphy]

How much WD-40 did you spray into the what part of your unit?

I've sprayed more than I've wanted to, so I would say it was a lot.

 

[Mr Boochie]

Have you tried another input source. Like a CD or tuner?

 

[Morphy]

No, unfortunately I don't have any.

 

[Morphy]

And is it okay if I get this DeoxIT D100L - Tub? It's the same thing but in smaller package and much cheaper.

https://www.svalander.se/shoppen/deoxit-oljor/deoxit/deoxit

 

[Mr Boochie]

 

[Mr Boochie]

Must dry off as much of the residual WD-40, first.

 

[Morphy]

I just want to report that my right channel is still not working after applying DeoxIT. #imbroken

 

[Mr Boochie]

You have access to another phono pre-amp or a receiver which has a phono input? Trying to rule-out issues with your current phono pre-amp.

 

[vinyl1]

There are simple tests you can try. If you switch the jacks at the preamp, and the problem moves to the other channel, then everything is OK from the preamp on and the problem is somewhere in the turntable and cartridge.
So you have either a bad cartridge, or a bad connection. You could test continuity with a multimeter from the cartridge pin to the end of the output cable. If you find good continuity from the pin to the end of the jack, then it is either a bad connection to the pin, or a problem in the cartridge itself. Normally, a bad connection would not be so bad as to give no sound at all, so at that point I would suspect the cartridge.

 

[Mr Boochie]

There are simple tests you can try. If you switch the jacks at the preamp, and the problem moves to the other channel, then everything is OK from the preamp on and the problem is somewhere in the turntable and cartridge.
So you have either a bad cartridge, or a bad connection. You could test continuity with a multimeter from the cartridge pin to the end of the output cable. If you find good continuity from the pin to the end of the jack, then it is either a bad connection to the pin, or a problem in the cartridge itself. Normally, a bad connection would not be so bad as to give no sound at all, so at that point I would suspect the cartridge.

Yeah, simpler test.

 

[Morphy]

There are simple tests you can try. If you switch the jacks at the preamp, and the problem moves to the other channel, then everything is OK from the preamp on and the problem is somewhere in the turntable and cartridge.
So you have either a bad cartridge, or a bad connection. You could test continuity with a multimeter from the cartridge pin to the end of the output cable. If you find good continuity from the pin to the end of the jack, then it is either a bad connection to the pin, or a problem in the cartridge itself. Normally, a bad connection would not be so bad as to give no sound at all, so at that point I would suspect the cartridge.

I've eliminated the preamp as a problem, so I need to get myself an multimeter device! I'll try to do it today and get back with the results asap. Thanks guys!

 

[Morphy]

I've bought the multi-meter today, I've tried this test:

And I've got no readings at all on multi-meter. Once, or twice I've got some digits, but they have instantly disappeared. I have no clue..

 

[Mr Boochie]

Your cartridge's terminals may not have the same alignment as that video. Maybe, this link will help you choose the proper terminals to test?

https://www.shure.com/en-GB/support/find-an-answer/testing-a-phono-cartridge-body

What brand and model is your cartridge, again? Thanks!

 

[Morphy]

What brand and model is your cartridge, again? Thanks!

It's Ortofon 2M Blue Mr. Boochie.