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Post by Jesse on Feb 11, 2007 18:48:19 GMT
I have a Fusion 8HD the sounds from my keyboard are all distorted.
I connected another keyboard to the amp and it sounds good, so it is not the amp.
I reformatted the Fusion hard drive, reinstalled the sound banks and OS 1.24.
I reset all settings to default settings.
The sounds are still distorted.
Anyone else have this problem, if so were you able to correct it and how did you correct the problem?
Next I turned the Amp off, pulled the cables out of the Fusion Main outs, then re-inserted them, turned the amp back on and the keyboard functions properly momentarily until I turn the volume on the keyboard up almost halfway while playing the Preset 1, Full Stops (S1) organ A2 key, then I get a pop through the amp and I am back to the distorted sounds.
I tried this several times and the keyboard works breifly.
The Amp is an Alesis Sumo 300.
I believe one or more of the circuit boards on the Fusion are defective.
Thanks ... Jesse
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Post by gwenhwyfaer on Feb 11, 2007 20:13:08 GMT
Remember, the Fusion output is hot... I seldom turn mine up further than about 30%, and past about 40% it's more or less guaranteed to overload whatever I plug it into. If I want to be sure it doesn't distort, I turn it down to 25%.
It's not faulty, it's just hot.
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Post by Jesse on Feb 11, 2007 23:18:20 GMT
It's the keyboard that's distorting the sounds, not the amp.
I have had my Fusion for over a year anset the volume between 1/4 & 3/4 open and have never had any problems before, I will connect another keyboard to the amp and crank it up to see if I have a problem with the amp.
Thanks Gwen
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Post by Jesse on Feb 12, 2007 0:06:37 GMT
I went back and connected another keyboard and opened it up all the way, the amp was loud and clear.
I played around with the Fusion volume control from low to wide open with the amp down low and I am beginning to think it may not be a circuit board, but possibly a defective volume control on the Fusion.
I emailed Alesis to get some input from them.
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Post by gwenhwyfaer on Feb 12, 2007 3:02:08 GMT
Is the amp you're using with it the same one you always have? Is everything set up the way it always was? If so, and the problem has only just started occurring, then yes, it sounds as though something's gone wrong.  (If not, then you need to work from the last point at which it did work before you can be sure of what's wrong. Sorry if it sounds like I'm belabouring the obvious, but there really aren't any shortcuts to debugging - you have to do things excruciatingly slowly, one step at a time. Take it from someone who's tried to skip ahead far too often.  ) If you're satisfied that what used to work before no longer works, then give it a whirl with headphones? That'll tell you whether or not it's across all outputs or specific to the ones going to the amp. (Also maybe test the aux outs as well?) Hope you get it resolved soon! |
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Post by Jesse on Feb 12, 2007 3:18:20 GMT
Thanks Gwen, I plan to test the main, aux & headphone outputs tomorrow. |
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jiffy
Junior Member
Posts: 253
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Post by jiffy on Feb 12, 2007 11:15:15 GMT
I've got a similar problem.
After I had my Fusion a couple of months, I noticed that if I moved the volume control while a note was sounding, the output would crackle on the right channel, (similar sound to a dirty pot), but if I moved the volume knob without any notes sounding, there was no crackling.
After another week or so, it got a lot worse - I started getting distortion on the right channel most of the time.
I have noticed that it is worse with bass notes and also the more notes I play, the worse it gets.
I am sending it back for repair under warranty on Friday (and having the memory upgraded at the same time), and I don't know how I'm going to occupy my time while it's away!
Paul
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Post by Jesse on Feb 12, 2007 12:50:32 GMT
Paul, my 8hd is 1.5 years old so no warranty, let me know what is done to repair yours so I have more info for repairing mine.
I miss not being able to play mine also, it's a really nice keyboard!
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Post by Jesse on Apr 22, 2007 14:53:00 GMT
Acording to the technician the problem was caused by a $2 component on the audio board. There is a modification to prevent this from happening again by adding clamping diodes to provide protection to this component. More info on the repair to follow once I get my 8HD back.  I have been waiting four weeks for E3 memory modules, they are on back order, sounds like a lot of people are upgrading the memory. Sweetwater seems to be the only source with E3 memory modules right now. |
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dana
Full Member
Posts: 45
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Post by dana on May 10, 2007 1:59:34 GMT
Holy Schnikeys! I'm sorry that I've been monitoring Fusionzone more than here... (It's just seems that there is more activity there) Several of us participate here also... My hat is off to gwenhwyfaer... I really respect this "Fusioneer's" knowledge and keen wit! Anyway, I purchased my 8HD aprox. last Aug/Sep and as of about a month ago, I experienced distortion in the right channel. We've been quite busy and the Fusion is getting a lot of road time. The first opportunity to set it up at home I noticed the problem. I went through a list of possibilities starting with my monitors. -Did the Fusion's (hot) drums blow the speaker? Was it a mixer or a sub-mixer (channel or entire unit)? I switched outputs, went direct into the amp with no luck. Could it be as simple as a bad cord? Nope. I was ready to throw in the towel. I gave a slightly sharp rap (slap) on the top panel above the outputs. End of problem! It has occurred maybe twice since. Each time has been solved with a gentle rap. Maybe our schedule will let up enough to have it looked at... I still have plenty of other boards (I learned after losing my Prophet to never give up gear, as sounds/synths seem to come back in vogue), but I honestly think I'd be lost without my Fusion/K2500 one-two punch! The only other problem (rather more of a nuisance) I experience is the right-hand, front (? -keyboard side) leg seemingly always coming unscrewed. Thank heaven for multi-tool pocketknives! D  |
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Post by Jesse on May 10, 2007 12:37:48 GMT
[quote The only other problem (rather more of a nuisance) I experience is the right-hand, front (? -keyboard side) leg seemingly always coming unscrewed. Thank heaven for multi-tool pocketknives! D [/quote] A little locktite on the srew threads will probably keep it in place. I am getting my 8hd back today, I will list the details later today. |
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Post by Jesse on May 11, 2007 14:38:51 GMT
First off I would like to THANK Alesis for repairing my 8HD under warranty, it was very gracious of them considering it was 5 months out of the warranty period.
Replacement parts AL2-51-4401, Transistor, 2N4401 AL2-51-4403, Transistor, 2N4403 AL2-71, IC, Op Amp Quad (Op Amp) Modifications Installed 2 Zener Diode's (clamping diodes for surge protection) Installed LCD Flicker Mod I had my memory, make that my 8HD memory upgraded (I wish I could upgrade my memory) to 192 Mb per voice engine (2 E3 modules). Work was performed by TSI in Midland Park, NJ, I spoke with them several times, they are very courteous and thorough. Thank you Ken Hughes I re-installed O.S. 1.24, reformatted the hard disk drive and installed my BACKUP volume folder. The Fusion sounds great, maybe better than before. I am just glad to have it back!
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Post by althemusicwizard on Jun 2, 2008 23:14:20 GMT
Hey guess what......
I'm working with my HD8 today and I'm getting the knackered volume pot syndrome......it crakles as if it's a dodgy pot at the 2 o'clock position. When turned up past the 4 o'clock position it comes back fine....sounds like I might have to give Alesis (Numark) a call......anyone in the UK had this problem?
I'll have to check the warranty (but I bought the 8HD from Germany) and there's noway I'm sending it back to Germany only to have it sent to the UK to be repaired.
Any suggestions?
Al
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Post by psionic11 on Jun 3, 2008 8:01:01 GMT
Hey guess what...... I'm working with my HD8 today and I'm getting the knackered volume pot syndrome......it crakles as if it's a dodgy pot at the 2 o'clock position. When turned up past the 4 o'clock position it comes back fine....sounds like I might have to give Alesis (Numark) a call......anyone in the UK had this problem? I'll have to check the warranty (but I bought the 8HD from Germany) and there's noway I'm sending it back to Germany only to have it sent to the UK to be repaired. Any suggestions? Al I've heard that the scratchy noise-crackling from turning a pot comes from dirt in the pot? Happens on guitars too. Not sure, but maybe you could try using compressed air to clean out the pot a bit after removing the knob... |
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Post by althemusicwizard on Jun 3, 2008 9:23:02 GMT
I'm pretty sure it's not a dirty pot.....the sound isn't breaking up in an analogue way....it's seems digital to me. I wonder if the volume pot merely simulates what happens to the audio, rather than having real audio running through it......anyway it looks like my 8HD is going to be taking a 1500-2000 mile round trip to Germany. Good job I have the HD6 to keep me happy Al |
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