Need SRM 450 V2 schematic/ Advise - diyAudio
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Old 26th July 2013, 01:11 PM   #1
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Default Need SRM 450 V2 schematic/ Advise

I have a problem with one of my Mackie SRM 450 v2's where the high frequency driver intermittenly cuts out. It is, however mostly out now. The diaphram is good. I have pulled the amp and verified when failing there is no output to the HF driver. I have looked and tapped around the board looking for loose connections and bad solder joints but have found none. Does anyone have any ideas? I do not have a schematic for the V2 and it is vastly different from the V1. I don't think I can troubleshoot this problem without a schematic so if someone could let me know where I can download one I would much appreciate it. I am an ET with equipment so I would like to take a crack at it before taking it in for repair.

Thanks,

-Steve
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Old 26th July 2013, 01:33 PM   #2
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It uses a switch mode power supply and class D output stages.
If it is less than 3years old, get it repaired under warranty.
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www.flyingmole.co.uk For World Wide support for Flying Mole, Class D, Refurbishment and Repairs. www.jonsnell.co.uk
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Old 26th July 2013, 11:31 PM   #3
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And for the schematic, get the serial number from the unit, then call Loud Technologies and ask for the schematics. They will usually ask you to agree not to post them on the internet, then send them to you.
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Old 30th August 2013, 04:43 PM   #4
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Quote:
Originally Posted by stomasik View Post
I have a problem with one of my Mackie SRM 450 v2's where the high frequency driver intermittenly cuts out. It is, however mostly out now. The diaphram is good. I have pulled the amp and verified when failing there is no output to the HF driver. I have looked and tapped around the board looking for loose connections and bad solder joints but have found none. Does anyone have any ideas? I do not have a schematic for the V2 and it is vastly different from the V1. I don't think I can troubleshoot this problem without a schematic so if someone could let me know where I can download one I would much appreciate it. I am an ET with equipment so I would like to take a crack at it before taking it in for repair.

Thanks,

-Steve
I think this might help you !. Is this is what you were looking for ?.
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File Type: zip Mackie-SRM450 actspk.zip (291.1 KB, 66 views)
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Old 17th March 2014, 06:52 AM   #5
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Check for a broken leg at TDA7294 and cold soldering at white connector to speaker
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Old 17th March 2014, 07:03 AM   #6
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Check in this picture
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File Type: jpg 450 v2 b.jpg (832.8 KB, 40 views)
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