Forums - Mini Torii Hum in One Channel

mberger0001 Verified Member Offline Posts: 14	Mini Torii Hum in One Channel 11/04/19 at 17:26:01 Hi, My Mini Torii has a hum out of one channel. I cleaned everything and switched my tubes but the hum stayed on the same side. Does that mean it is a part inside that is causing my problems? I also switched my speaker cables side to side and that moved that hum to the other channel. That must mean it is a part inside? m
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Donnie Seasoned Member Online Why does it hurt when I pee? Posts: 2531 Central Illinois.	Re: Mini Torii Hum in One Channel Reply #1 - 11/04/19 at 17:48:26 You changed every tube side to side? I would look at cable routing, sometimes it ends up being a power supply cable being too close to a RCA.
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lazb Seasoned Member Offline Posts: 378	Re: Mini Torii Hum in One Channel Reply #2 - 11/04/19 at 19:16:18 be sure and switch the input leads to verify it is not coming from upstream of the amp.
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mberger0001 Verified Member Offline Posts: 14	Re: Mini Torii Hum in One Channel Reply #3 - 11/04/19 at 19:21:37 Yeah. I disconnected my interconnects and still get the hum. m
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mberger0001 Verified Member Offline Posts: 14	Re: Mini Torii Hum in One Channel Reply #4 - 11/04/19 at 19:23:30 I started by switching the input tubes, then output tubes, then just kept going one at a time until i did them all. Unfortunately a tube was not the problem. m
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Steve Deckert Administrator Offline If the 1st watt sucks why continue? Posts: 6512 East Peoria IL	Re: Mini Torii Hum in One Channel Reply #5 - 11/05/19 at 02:41:39 How loud is the hum? Does it do it with the volume control all the way down? Did you also swap the rectifier tubes during your testing? Are the feedback controls both turned fully clockwise? -STeve
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mberger0001 Verified Member Offline Posts: 14	Re: Mini Torii Hum in One Channel Reply #6 - 11/05/19 at 03:09:44 I don't have feedback controls. It is not really loud. But audible everywhere in the room. That is with the volume turned all the way down. The hum does not change if I turn up the volume. I did also swap the rectifier tube. m
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Rivieraranch Seasoned Member Offline Posts: 2153 x0\|Ft. Lauderdale\|USA\|\|0\|0\|FL,Florida	Re: Mini Torii Hum in One Channel Reply #7 - 11/08/19 at 14:44:59 So what happened?
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mberger0001 Verified Member Offline Posts: 14	Re: Mini Torii Hum in One Channel Reply #8 - 11/08/19 at 15:25:31 Nothing. I am stumped as to what it could be. I sent an email to Decware about possibly sending it in for repair. Maybe I will get some upgrades at the same time. Transfer the guarantee. m
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jslateiv Seasoned Member Offline Posts: 163 Wilkesboro, NC	Re: Mini Torii Hum in One Channel Reply #9 - 11/08/19 at 16:44:36 Hey M, In your first post you mention that when you switched the speaker cables, the hum moved. The hum didn't move when switching Tubes,.. That to me would indicate an issue with your cables..
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mberger0001 Verified Member Offline Posts: 14	Re: Mini Torii Hum in One Channel Reply #10 - 11/08/19 at 17:49:30 I just swapped left and right speaker and cable. The cables are soldered to the drivers. I think that means that the problem is inside the amp? m
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jslateiv Seasoned Member Offline Posts: 163 Wilkesboro, NC	Re: Mini Torii Hum in One Channel Reply #11 - 11/08/19 at 19:14:45 Yes,.. I see what you are saying. It does seem likely that there is some issue in that channels circuit, all things considered. I would contact Steve and arrange for a send back.
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jslateiv Seasoned Member Offline Posts: 163 Wilkesboro, NC	Re: Mini Torii Hum in One Channel Reply #12 - 11/08/19 at 19:17:28 In re-reading you previous post, when you swapped the cables, did you move the speakers too? If so and the hum moved, then the prob is with your cable/driver... try this, take one speaker only, hook it to the left, then right,.. All good? All bad? good only on one side? This will tell you if its the amp or cable/speaker.
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mberger0001

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Posts: 14

Re: Mini Torii Hum in One Channel
Reply #13 - 11/08/19 at 19:57:13

Hi jslateiv,
I tried again. Did what you said with one speaker. It is the amp. But what i noticed this time is that my good side does produce a sound at the driver if you put your ear right up to it. And it sounds just like my bad side but way quieter. The bad side of the amp is 20x louder. This is with no source connected and volume pots turned all the way down.
m

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jslateiv

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Posts: 163
Wilkesboro, NC

Re: Mini Torii Hum in One Channel
Reply #14 - 11/08/19 at 20:34:09

Sounds like a ground issue in the circuit on that one channel somewhere. Send it back to Steve, he'll take care of it / you. The noise you hear out of the good channel should def. be the same/equal on the other channel. You always hear a little tube noise but shouldn't be much and def. not enough to interfere with the music.

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PureFidelity Harmony (SS Zephyr MIMC / ZYX Ultimate 100 / Miyajima Madake) > Roon/NUC > Holo KTE May > Supratek Cortese LCR > SE84-25 Zen / Gerus 300B / Radu Tarta Ultimate 300B > Triangle Celius 202 / Zu Omen (Hi-Mod) / ZenMstrL-F15 : PSA P12 : Iconoclast Cabling

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Donnie Seasoned Member Online Why does it hurt when I pee? Posts: 2531 Central Illinois.	Re: Mini Torii Hum in One Channel Reply #15 - 11/08/19 at 23:08:17 I don't like to get to technical, but it sounds like the "Debuzzinator" wire has ether came loose or been chewed in half by Wolverines. Send it back immediately so that it can be fixed. Steve has a great big hammer from ACME to bonk the Wolverines on their heads. That is my personal guess, but it could be wrong.
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jslateiv Seasoned Member Offline Posts: 163 Wilkesboro, NC	Re: Mini Torii Hum in One Channel Reply #16 - 11/09/19 at 17:38:51 HA,.. it's def. the debuzzinator wire. Had forgotten the technical term for that wire, ;D Those mini wolverines can wreck havoc if they find a way into your gear!
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Rivieraranch Seasoned Member Offline Posts: 2153 x0\|Ft. Lauderdale\|USA\|\|0\|0\|FL,Florida	Re: Mini Torii Hum in One Channel Reply #17 - 11/12/19 at 20:57:24 You should update to UFO Transformers and change the caps to beeswax and include the anniversary update. You won't hardly regionalize the amp when it returns.
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mberger0001 Verified Member Offline Posts: 14	Re: Mini Torii Hum in One Channel Reply #18 - 11/13/19 at 01:41:16 Where does one find the price list for updates? I looked around but could not find one. m
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Lon Seasoned Member Online "Love without guts is worthless!" Philip K. Dick Posts: 28259 Munson Township, OH	Re: Mini Torii Hum in One Channel Reply #19 - 11/13/19 at 03:20:48 Here's one of the lists: And the other: They're located in the thread about the modifications . . . probably would be better to have Steve locate them on the products pages. . . .hint hint.
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