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I think my mg head is taking a dump! - Page 2

post #16 of 34
Thread Starter 
this just keeps getting weirder and weirder, now I moved the amp upstairs and hooked to an ancient magnavox laserdisc player and switched all the tubes in and out that I have and I don't seem to have any problems.....???.... what gives??? It can't be my new nad c421i giving me the problems can it? I am totally confused, could the newer tubes jj el 84 and the mullard be getting some kind of interference from a tv or something else? I am at a total loss here folks. and now after all this I stripped one of the screws on the bottom panel and the power switch doesn't fit tightly in the front panel anymore....... what a hell night I have here!!!
post #17 of 34
Thread Starter 
merc and joelongwood, I can't thank you enough for helping to make a night of hell a LOT more tolerable for me, AND SOME PEOPLE HERE SAY HEADFI IS GETTING BORING! TO THOSE PEOPLE I SAY READ THIS THREAD AND SEE WHAT IT'S ALL ABOUT!!!
post #18 of 34
Don't Worry, or be Embarrassed... I've been where you are....

Like I said, Tubes, tubes, tubes....

They are like variable funct physical math... they can change on a moment with regard to a puff of the wind.....

Anyway, NOW, try to move the Head to the primary room, but, only hook it up one component at a time till it starts to make the same whine.

Let us know what happens.... maybe we can help more.
post #19 of 34
Thread Starter 
I will do it right now, but I only had it hooked to one component in the first place, my nad cdp, I hope to GOD that's not the problem because it's brand new, about three weeks old, well I'll be right back to let you know what happens!
post #20 of 34
I'm keepin my fingers crossed while I go and fill my glass....
post #21 of 34
The MG Head is sensitive to power/grounding conditions. My MG Head was noisy at work, but totally silent at home.

*Where* you plug it in is as important as *what* you plug into it...
post #22 of 34
Quote:
Originally posted by fyrfytrhoges
this just keeps getting weirder and weirder, now I moved the amp upstairs and hooked to an ancient magnavox laserdisc player and switched all the tubes in and out that I have and I don't seem to have any problems.....???.... what gives??? It can't be my new nad c421i giving me the problems can it? I am totally confused, could the newer tubes jj el 84 and the mullard be getting some kind of interference from a tv or something else? I am at a total loss here folks. and now after all this I stripped one of the screws on the bottom panel and the power switch doesn't fit tightly in the front panel anymore....... what a hell night I have here!!!
Was your tube amp sitting on or really near the TV? Could be picking up some RFI from the TV or other equipment near it. Could be induced RFI into the IC or amp itself. Any way to move it away from the TV and such in your old spot?

Give the amp time to warm-up again, THEN see if the problem comes back. It could be that the problem comes when the tubes are hot.

Try not to work any more on the amp tonight! After getting frustrated you might end up throwing at the TV or something. When I used to troubleshoot electronics in the Navy, when I ran into something like this I went for a soda break, took some time away to think, and then went back to work when I had calmed down and could think more clearly.
post #23 of 34
Whoa... you clicked the Submit button about 4/10ths of a second after I did...
post #24 of 34
Quote:
Originally posted by Nick Dangerous
Whoa... you clicked the Submit button about 4/10ths of a second after I did...
Fastest fingers in the south. Just don't bid against me on eBay ther Nick!!
post #25 of 34
Thread Starter 
ok guys here's the summary, I have to get up for work in the am. I took the amp back down to where it's been working fine for a couple of months now, without connecting it to any component it still has a high pitched static in the right ear cup of the hd600, it doesn't get better or worse when hooked up to my cdp. the thing is that I haven't added or taken anything away from this area to give reason for something like this to happen, I think instead of banging my head against the wall trying to figure it out I will box it up and send it to wherever I have to, to have it tested, it now needs a new power switch anyway because after taking it out a few times it doesn't fit snugly anymore and I can't live with an amp that I spent that much on not being perfect. hopefully with some testing even if it costs me, someone will be able to figure out the problem. I want to say again thanks to all you guys staying up with me trying to figure this out, and to think a new pair of headphones could cause this much hassle. I mean this amp which I have heard so many people complain about having issues with has been perfect for me up to this point but I am totally at the end of my rope, I should have been in bed 3 hours ago and I'm just tired and frustrated. You guys are the best and from now on anyone who says anything bad about headfi can kiss my big fat ass!!! for what that's worth anyways!!! nick, servinginequador,joelongwood,merc - YOU GUYS ARE THE BEST!!!

GOODNIGHT, I'll check back tomorrow and let you know what headroom says......
post #26 of 34
Let us know how things turn out!!

Once you get back online tomorrow, let us know if the problem ever surfaced again while the amp was moved to a different location. If the amp had no problems in a different location, then it has to be power or RFI related to that location you have the amp in. That way you'll only have to move the amp or plug it into something to filter the power to get rid of the problem. If the problems occured in the other location, please put down the amp, don't throw it at something. Just call HeadRoom like you plan. Troubleshooting something intermittent is the biggest mightmare you can find, and you handled it quite well.

Now get some sleep!
post #27 of 34
Quote:
it still has a high pitched static in the right ear cup of the hd600, it doesn't get better or worse when hooked up to my cdp.
Okay,,, but well the sounds might just get really nice if you just twist the cables as I suggested, and then listened.

Anyway, Take Care,
merc
post #28 of 34
Thread Starter 
merc, I tried the twisting cable fix and got the exact opposite reaction, asl must have fixed that problem before I got my amp, after twisting the cable I HAD the hum problem, so I twisted it back and now the power switch doesn't fit proplerly.
post #29 of 34
Thread Starter 
bottom line, called headroom, they said send it straight to divergent or divertech or whatever so I pulled out the credit card again and it's off to the great white north to hopefully be put back in order. joe lau should hear about this one, maybe he could just exchange this one for one of the upgraded models, he could really make alot of friends that way and also show what a stand up company ASL really is!!! (just a wishful rant on my part and by no means a serious one)
post #30 of 34

Is it noise for all Headphone ?

Is it noise in all headphone ? What is the sensitive and impedance of your headphone ? It may be have problem on very high sensitive low impedance headphone. It may be can solve this problem by parallel a 100 Ohm resistor on output. I really like to solve this problem. Please send me a email if you need any help.
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