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Post by mstsfreak on Jun 9, 2008 17:00:51 GMT
I spoke to Alesis UK who gave me a part number. I confirmed it with Justin. He's a bit tied up first thing back after the weekend and a shedload of email to wade through so he's has asked me to tell you that the part number is : 9-79-0361 According to AUK, the price is £37.50 if the fault is out of warranty but speak nicely to them - they may be agreeable to waiving that. No guarantees on that though. Over to you. Steve Well, thank you very much Steve!!
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Post by mstsfreak on Jun 27, 2008 10:30:51 GMT
I spoke to Alesis UK who gave me a part number. I confirmed it with Justin. He's a bit tied up first thing back after the weekend and a shedload of email to wade through so he's has asked me to tell you that the part number is : 9-79-0361 According to AUK, the price is £37.50 if the fault is out of warranty but speak nicely to them - they may be agreeable to waiving that. No guarantees on that though. Over to you. Steve Have you a emailadress for me so i can contact them so i can order a powersupply myself? The local shop looked at the problem and they said it would cost 234 euro's to have it fixed. But the problem also is, the delivery time is 1 to 4 months. I don't think i can wait that long... and why 234 euro? The price of a powersupply is 37 pounds.
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Post by Hollow Sun on Jun 27, 2008 22:54:38 GMT
Get on the phone to Alesis UK and explain the situation to them - they might be able to arrange something.
Steve
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Post by mstsfreak on Feb 16, 2012 11:50:35 GMT
To bump this thread: I have a new powersupply in it for almost 4 years now and it works ok. The Fusion now runs warm, but not HOT anymore. Just as warm as a laptop-powersupply.
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Post by Jesse on Feb 16, 2012 18:50:32 GMT
To bump this thread: I have a new powersupply in it for almost 4 years now and it works ok. The Fusion now runs warm, but not HOT anymore. Just as warm as a laptop-powersupply. If you installed the new PSU did you notice any physical difference between the two PSU's? Below is a pic of the new PSU I received Fusion Part number 9-79-0361 also printed on the PSU is SPSHA33R4-058NAttachments:
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Post by mstsfreak on Feb 17, 2012 11:20:20 GMT
I don't know because i did not changed the PSU myselfs. It was changed at a service centre.
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Post by mstsfreak on Feb 17, 2012 11:26:10 GMT
Here is a picture from before it went broken: It looks like the newer version has bigger heatsinks. Attachments:
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tekuk
Full Member
Posts: 19
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Post by tekuk on Feb 29, 2012 10:20:26 GMT
Indeed... My be a stupid idea but would it ont be possible to upgrade the Heatsink on the older Psu to a bigger/better one???
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Post by parametric on Mar 1, 2012 3:01:38 GMT
Looks like I have the larger heatsink PSU already fitted (phew!) I certainly have NOT had any problems with excessive heat buildup even with 3-4 hrs ON times. I have heard that the 8HD is better-behaved in this respect, but some thoughts from 6HD users who have this later PSU would be useful Best Regards parametric Attachments:
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Post by riffbeeper on Mar 1, 2012 18:37:51 GMT
My Fusion was both a 8HD and had the larger heat sync. My brother in law has the defective unit for autopsy. The obvious thing was that one of the heat syncs seemed to rock ever so slightly. Maybe it's a re-solderable thing.
Riff
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Post by parametric on Mar 2, 2012 0:06:58 GMT
one of the heat syncs seemed to rock ever so slightly. Maybe it's a re-solderable thing. Riff Interesting. My small experience of such matters suggests that heatsinks are normally bolted to components (often power transistors) that produce large amounts of heat during normal operation. INTIMATE physical contact is essential for trouble-free operation - and the movement you indicate would suggest that this had come loose/was never correct. - and resultant high temperatures contributed to early failure. The Fusion PSU is also rather high density, component-wise and its difficult to see how things are arranged. A better-spaced arrangement would help prevent the HOT stuff dessicating adjacent components . . . . (IMHO) An interesting parallel is CPU heatsink/fan arrangements in modern PCs. In this case, despite BOTH the CPU and the heatsink having "microflat" surfaces, intimate contact is only achieved by using thermal paste - and you really "chance your arm" if you disassemble this arrangement (for whatever reason) and FORGET to renew the paste. Early destruction of the CPU is the likely outcome. Let us know how the "autopsy" goes . . . . . All adds to the knowledgebase Best Regards parametric
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Post by riffbeeper on Mar 2, 2012 14:22:15 GMT
It sure is densely packed in there. The picture of the yamaha ex-5 psu posted somewhere in here, is a more spread out design and I would think less likely to fail due to heat. I guess it had to be compact to fit in the 6HD and of course they would use it in the 8HD as well, instead of making a special, more spread out unit for the 8HD only. "If it ain't broke..............."
Riff
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Post by parametric on Mar 3, 2012 0:41:46 GMT
Ah yes Riff -
I saw that eX5 PSU too. What a nice spaced out design. Pity the Fusion's isn't as well laid-out.
I wonder if there would be any mileage in attaching (with great care!) some copper sheet "wings" to the existing heat sinks - to increase their heat capacity and perhaps speed heat removal from those "problem" areas?
Would need a careful check of both 6 & 8HD internals to see if there is room. Better yet if the copper could extend to the vicinity of the fan.
A larger (and therefore slower) fan would be good too - but there just ain't enough room I think . . . .
Best Regards
parametric
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Post by Jesse on Mar 3, 2012 2:27:58 GMT
For the copper to provide any extra heat dissapation it would need good solid contact with the aluminum, a sheet of copper between the fingers would block air flow around the aluminum fingers of the heat sink and probably reduce the heat diaappation. Attachments:
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Post by parametric on Mar 4, 2012 2:16:38 GMT
Yes - valid point Jesse.
Contact would HAVE to be good indeed - and perhaps AL sheet rather than copper.
A tapped hole in the existing sink and bolted-on additions using thermal paste would improve contact (SPACE PERMITTING).
Obviously one would have to keep an eye on the effect on the air-flow - so its not retrograde - as you say . . . .
Probably a bit of a research project - but nevertheless, a thought . . .
Best Regards
parametric
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