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Have a Mackie 1801 have no sound could this be a fuse

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Posted on Jan 02, 2017

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SOURCE: mackie swa 1801 power amp

You likely have other parts blown as well, but Q3 (MJE15033) AND/OR r8 (1 OHM/0.5 Watt) are blown. I suspect that Q3 has a base-collector short and you will find several of the output transistors are fried as well Q4, Q5, Q15, Q16. I suspect that the Zeners D14, D25 may be blown.

When restarting this, put a 100 Watt lampin series with teh 120 volt power to limit current and avoid destroying freshly repaired parts due to a few bad ones not found.

Posted on Aug 11, 2010

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SOURCE: swa 1801 mackie blown capacitor

mackie 1801 f 1 blow and tip 122 bad

Posted on Mar 05, 2012

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SOURCE: no sound

Hi my name is MIchael and I repair the following amps JBL PB10, PB12, TSS-1100, TSS-1200,PS12, PS12, E250P, SUB12 Venue. If it has the screw near the on/off switch. If your amp is blowing the fuse, has bad sound, no sound, doesn't power up or if the output is low or muffled. We can fix it - please check ebay and search WE REPAIR PB10 PB12 - you will find us ... Edwards Electronics ....

Posted on May 24, 2012

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The OL and THERMAL LEDs turn on quickly after an even very low level signal input.

These subs are renowned for problems. The PSU and the output stages as well as the main driver are all weak and there are a number of companies that will upgrade them and sort out other issues such as vibrations. Assuming it is out of warranty and you really want to use this you would be best going to a specialist repairer to get it sorted not Mackie.

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Yes, you can use the A output, as long as you're OK with it being a mono system. It may be helpful to read the manual which has a lot of info including possible setup configurations. Here's a link-

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Hi, I have a mackie srm1801 and in the middle of a gig the OL LED came on and wouldn't go off. Input was unplugged and still the light wouldn't go off. After a while the fuse went and now there is no

It is likely that the O/P transistors have blown, especially if the fuse keeps blowing and the O/L led comes on. It's a repair shop jobbie

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Model swa 1801 Fuse 240V 4A burned out ! I replaced it but still get no power (any led stay off) What can it be ?

check for integrity of the main amp and the torroidal transformer.

here is a guide , how to check for transistor

if there is a continuity on the primary terminal of the transformer.

Have a tech to guide you , should you need to DIY.

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The peek light is stuck on and im not getting any sound 1801 hd sub

The amp is likely blown. This is not DIY unless you are competent at electronics.

Feb 19, 2011 | Mackie HD1801 Powered Subwoofer (1600...

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Where is the fuse on the mackie 1801.....there is no fuse tray at the power cord plug....

There are more than one fuse and they are internal. Replacing the fuse without fixing the cause MAY result in causing more damage to components. The fuse is inside to force one to open the box to repair.

Here is schematic:

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Dont know how to hook up srm1801

Go from the main outs on your mixer to the input on the 1801. With an XLR, connect the 'high pass' output on the 1801 to the input on the 450 on top of it.

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Swa 1801 mackie blown capacitor

Took alot of finding but you can get them from Digi-key

Sep 16, 2008 | Mackie SWA1801 Subwoofer

2 Answers

No sound

Willing to bet you've blown the amp, or fused the coil. I've had it happen twice, apparently when running off a power source that apparently couldn't handle the load. Hope it's under warranty - if so Loud Technologies (deals with all Mackies warranty stuff) should be able to replace the unit. Otherwise, you'll need to take it in to a service department and have it checked out.

Good luck, you'll have to arm wrestle with them to get them to replace it.

Jun 12, 2008 | Mackie SWA1801 Subwoofer

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