I have only come here seeking knowledge...


Hi. Just joined Audiogon. In my first search here I didn’t find anything close to what I was looking for.

Background:

I gave up on vinyl when I bought my first CD player back in 1985. In early 2017, I got the vinyl bug again and bought an Audio Technica AT-LP5 based on my research, (the price didn’t hurt either). Overall, I’ve been satisfied with it, however, in the last 7-10 days, I’m hearing a pretty loud hum between tracks. When the new track starts, It either disappears or is masked by the music. Sound is as good as before this hum started.

My Rig:

Tuner- NAD C 427 (2016)

CD Player- Denon DCD-600NE (2019)

Turntable- Audio Technica AT-LP5 with VM520EB/H cartridge (2017)

Phono Stage- Alpha Design Labs GT40a (2017)

Homebuilt Windows PC with Creative Labs Sound Card, and  Exact Audio Copy,

Audacity software. (2014)

Integrated amp- Cambridge Audio CXA60 (2016?)

Speakers- Wharfedale Diamond 240 (2016?) and Wharfedale Diamond 225 on the way for Winter in South Texas. Tried Monitor Audio Bronze 2s (arrived damaged,) and Q Acoustics Concept 20s (one speaker was defective.)

Insight Quest:

Being both retied, the wife raises her eyebrows whenever I bring up the subject of electronics. The newest piece I have is the CD player.

I’m putting money away for a new turntable. Based on what I’ve seen so far, I got it down to two. I’m thinking of either the Pro-Ject X1, or the Audio Technica AT-lp7. I’d really appreciate any help and/or ideas. Thanks!


badapple
1 Stereo int. Amp on one double outlet by itself (breaker 1 original build)
2 TTL & phono stage on double outlet (breaker 2 when basement finished). One led light for recess where eqp’t is), no dimmer)
3 CD player & tuner (now) on double outlet (breaker 1)
4 PC, TV & BP ON power strip connected to outlet on breaker 3. Shared with irrigation system which runs at 5 am M,W & Th. I will try amp, phono stage & ttl only with a different ground wire, and if successful, add things at a time. Will report when done. Thanks!
I feel foolish and embarrassed to say the least, rather than publish a string of expletives on this site. I removed the OEM ground wire from the ttl to the phono stage and replaced it with a single strand of 14 gauge speaker wire. Since I had not disconnected anything yet, I put an LP (Gaby Moreno’s Ilución) on the table and tried it. Magic!!!  No foreign noise!  Upon eyeballing the wire, I couldn’t see anything wrong. I’ll inspect it later under a magnifying glass lamp. I’d like to thank each anybody else that took time out of what your, what are very busy schedules to help me. Again, thanks. 
The big question is "what changed?". You mentioned that you moved things a couple of months ago, but you also say this hum began 7 days ago. So I surmise it was all quiet after the move to the basement.
There is the possibility that the hear wave means dirty (AC/mains) power.
There is a bigger possibility that something changed in the grounding: a loose wire, something you moved its AC to a different plug, etc.  MC already asked - but be aware that you ought to have everything plugged into (logically) one outlet.  Since you need many physical receptacles use a large, high quality outlet strip to break it down (or, as I do, make your own...)
But the bottom line is SOMETHING is not the same....
G
I agree. In my excitement, I didn’t take the time to articulate a decent post. Here’s some background. Two months ago, I got the idea of moving my stuff to what was my youngest son’s den/study room before he left for college. Since then we’ve used the spare bedrooms for when family or guests come. The den is furnished and always had a tv. I got rid of the old 5.1 processor, and the speakers some time ago. The audio things I brought up played great until a week, week and a half ago when the turntable started acting up. The ground wire will have to wait until I have time to find if in fact it’s damaged. 
The only other thing I can think of, is I wanted a pair of stander speakers instead of dragging the floorstanders to South Texas for the Winter. First, I tried a pair from Monitor Audio. One had very little sound out of the bottom driver. In fairness, the carton had some damage when it arrived. Second, I went with the Q Acoustics Concept 20s. Although that box arrived in good shape, the bigger driver was blown as far as I’m concerned. Very loud static. On both sets, I switched the speakers to the other channel to verify it wasn’t my equipment causing it. I even hooked up my floorstanders and they played perfectly. Dug up the surround speakers from my old Klipsh set, and beside not having any bass to speak of, they worked. When  the Q’s were returned, I replaced my home made speaker wires with two pairs of SVS SoundPath speaker wires. I suspect that I either damaged or disturbed the fragile ground wire on the turntable while switching speaker wires, because after doing so I got two new LPs and played them through the floorstanders. That’s when I noticed this issue. Today I received the Wharfedales and sound great right out of the box. Even the LP I played today after replacing the ground wire. 
IDK if there’s any retirees here, but It seems that I, for one, let tools like PDCA, root cause analysis go out the window when I retired. 😂