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The death of a 16.4.2 ?
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PhilG
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Joined: 29/07/2010 01:46:55
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double post

This message was edited 2 times. Last update was at 11/06/2011 06:51:30


2 x SL16.4.2's
Audiobox USB
Studio One V2 Pro
/ Rack System
AMD FX-4170 / 16GB DDR3 / Win7x64 / Via 6308FW Onboard
/Mobile System
Toshiba Satellite P200 / 8GB DDR2 / Win7x64 / Ti FW & i7 13" MBP
/Wireless
Ipad v1 16gb - Samsung Galaxy Tab - Asus Black Diamond router

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PhilG
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would be interested to see the results - I use the very hard foam with the foam strips on the mixer - there is approx 1-2mm clearance under the mixer but would be interesting to see what happens when its loading down on soft foam

2 x SL16.4.2's
Audiobox USB
Studio One V2 Pro
/ Rack System
AMD FX-4170 / 16GB DDR3 / Win7x64 / Via 6308FW Onboard
/Mobile System
Toshiba Satellite P200 / 8GB DDR2 / Win7x64 / Ti FW & i7 13" MBP
/Wireless
Ipad v1 16gb - Samsung Galaxy Tab - Asus Black Diamond router

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roblof
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Joined: 12/04/2011 21:33:08
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Hmmm, it may take some time before I can test it.

I tried the "light-all-leds-and-do-a-power-cycle" trick on my sl24 and bricked it

And no - It won't come back using the documented tricks either...
Behringer x32 with Dante, x32-rack, s16 stagebox, p16 monitor system, StudioLive 24, FirePod 10, Alesis HD24, M-Audio FastTrack Pro, Studio One Pro v2, NI Komplete 5-8 Ultimate, Cubase 4, Ableton Live 8 Suite, Reaper 4, misc Line6 gear/software, True Temperament Frets on basses and guitars, Korg Kronos, Roland vk-7, Yamaha 02r.....
carcrusher
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Joined: 07/01/2011 22:19:16
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Location: Sanford, NC
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Sorry for your loss............or losses.

The heat-sink the chassis becomes is the EXACT reason I made my road case
the way I made it.

My console is a 24.4.2 and sits on 3-1" x 1" strips of nitrogen injected neoprene to create
and air cavity under the back half of the chassis work. The vent area is to the left and right of the console
in the same places the factory vents are located.
I'd think the chassis is maybe 1 mm aluminum and can radiate a large amount of heat
given the air space to do it in.

If it's sitting on foam:
there's no air flow at all.
the foam will insulate it.

My console has run fault free for 8 months now and some of those shows were outdoor with the board
in direct sunlight.
It got very warm on the top surface and the bottom of the sheet metal case, but not hot, ever.

Some guys on this forum have bought my case. If the case is at fault, I'd take issue with the designer/manufacturer.

later.
CarCrusher
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PhilG
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checked last night with frieds IR tester - 4 hours of running 14 channels in + recording

Mixer was sitting on its normal foam base

Air temp 25 deg c
- top of lcd screen ( hottest point) 35 deg c
- Bottom of mixer where heatsink bolts 39deg c
-Centre of mixers bottom side 36deg c
- Side of mixer 29 deg c

Hardly electronic killing temperatures even if it is sitting on a foam base

even a 3 deg change within 10 cm of the heatsink mounting point shows the case is venting correctly and the case is dissipating heat as it was designed to do

2 x SL16.4.2's
Audiobox USB
Studio One V2 Pro
/ Rack System
AMD FX-4170 / 16GB DDR3 / Win7x64 / Via 6308FW Onboard
/Mobile System
Toshiba Satellite P200 / 8GB DDR2 / Win7x64 / Ti FW & i7 13" MBP
/Wireless
Ipad v1 16gb - Samsung Galaxy Tab - Asus Black Diamond router

[Email] [WWW] [ICQ]
roblof
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Joined: 12/04/2011 21:33:08
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Wow, huge difference in temp between sl16 and sl24!

Standard components run at a max temp of 65-70 degC so it sounds like you have a lot of temp headroom...

I peeked inside my sl24 and noticed that while the voltage regulators are secured to the bottom plate, the high speed diode is on its own heatsink not mounted to the bottom plate (and this makes perfect sense since it handles high voltage from the mains).

That component is also capable to run at temps up to 150 degC.

Since someone asked elsewhere - The power supply is labeled 100-240v, 70W - No jumpers. This means that the sl24 will work in the whole world without any modifications.
Behringer x32 with Dante, x32-rack, s16 stagebox, p16 monitor system, StudioLive 24, FirePod 10, Alesis HD24, M-Audio FastTrack Pro, Studio One Pro v2, NI Komplete 5-8 Ultimate, Cubase 4, Ableton Live 8 Suite, Reaper 4, misc Line6 gear/software, True Temperament Frets on basses and guitars, Korg Kronos, Roland vk-7, Yamaha 02r.....
MikeRivers
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roblof wrote:
I peeked inside my sl24 and noticed that while the voltage regulators are secured to the bottom plate, the high speed diode is on its own heatsink not mounted to the bottom plate (and this makes perfect sense since it handles high voltage from the mains).


What's the "high speed diode" and what's it doing connected to the mains? Is this for surge suppression? Or is the power supply one of those that has no mains transformer, but the AC is rectified directly, then chopped at the switching rate so it can interfere with nearby RF-sensitive devices (like wireless receivers).

Visit http://mikeriversaudio.wordpress.com for some useful audio info
"It's much easier to look for a magic solution than it is to adapt to reality." - Allan Sloan
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PhilG
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They are the 2 different versions of power supplies I have seen so far

2 x SL16.4.2's
Audiobox USB
Studio One V2 Pro
/ Rack System
AMD FX-4170 / 16GB DDR3 / Win7x64 / Via 6308FW Onboard
/Mobile System
Toshiba Satellite P200 / 8GB DDR2 / Win7x64 / Ti FW & i7 13" MBP
/Wireless
Ipad v1 16gb - Samsung Galaxy Tab - Asus Black Diamond router

[Email] [WWW] [ICQ]
MikeRivers
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Joined: 28/07/2010 15:44:52
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They look like there are a couple of different components, but pretty much the same layout. Do you have schematics? What's the difference electrically?
Visit http://mikeriversaudio.wordpress.com for some useful audio info
"It's much easier to look for a magic solution than it is to adapt to reality." - Allan Sloan
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roblof
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Joined: 12/04/2011 21:33:08
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Here is the SL24 PSU

SL24-PSU.png
[Thumb - SL24-PSU.png]
 Description StudioLive-24 Power Supply [Disk] Download
 Filesize 4524 Kbytes
 Downloaded:  955 time(s)

Behringer x32 with Dante, x32-rack, s16 stagebox, p16 monitor system, StudioLive 24, FirePod 10, Alesis HD24, M-Audio FastTrack Pro, Studio One Pro v2, NI Komplete 5-8 Ultimate, Cubase 4, Ableton Live 8 Suite, Reaper 4, misc Line6 gear/software, True Temperament Frets on basses and guitars, Korg Kronos, Roland vk-7, Yamaha 02r.....
MikeRivers
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Joined: 28/07/2010 15:44:52
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Pictures are pretty, but schematics tell the real story. When you draw one out, post it. (same for the preamps) I don't expect PreSonus to release a schematic other than perhaps to an authorized service agent. Companies just don't do that any more for various reasons, some of which are important to their business.
Visit http://mikeriversaudio.wordpress.com for some useful audio info
"It's much easier to look for a magic solution than it is to adapt to reality." - Allan Sloan
[WWW]
 
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