Question about Mackie SWA1501 Subwoofer

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I am looking for a power amp circuit board part #23020690. Mackie told me they no longer exist, that i am to purchase the entire amp assembly for almost $700. I don't know if this board can be repaired. thanks a lot.

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Posted on Jan 02, 2017

XSdB
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SOURCE: Mackie SWA1501 Base Bin - Circuit Boards burnt.

They are not publicly available. Mackie authorized service centers are the only places that will have that information. The amp (if it has failed) requires a bit of skill to rebuild, and up to 100$ in parts alone. (not including the speaker driver if it's blown). I have repaired several of these in the past, and they aren't that simple. There is also a service bulletin about 2 diodes that usually need to be swapped with one another because of a defect during manufacture (the parts were installed incorrectly). (One is D20) if you rebuild the amp, and fail to address the diodes, it will fail again very shortly.

Posted on Jun 12, 2009

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SOURCE: Mackie SRM450 won't power on.

I am also getting the same problem. Complete power off. Was working like a dream. No given signs that this would cut off. Sent this for repair, the current quote is £160.00 for the amp module to be repaired. I was hoping to find somewhere that can supply, repair, or change for much less; considering that It is worth est £250.00 second hand!

Posted on Aug 07, 2009

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I have a Mackie 406M Powered Mixer. can't get sound out of it anymore. all the input level set lights stays on. any suggestions


That sounds like the amp board died. Mackie parts can be hard to source, and Mackie is really slow to ship, so I suggest taking it to a Mackie authorized service center. Here's a link-

Contact Support Mackie

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There is an entire crossover circuit inside that is BEFORE the amp section. There are 2 separate amps: one for HF and one for LF. Can you describe the noise you are hearing in more detail? Is hte sound effected by the gain controls at all? What happens without any input?

Thanks,
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TH-15A won't make sound. Comes on, then flashing front light


This probably means there is a failure and the internal protection circuits have activated. It will probably have to go to a shop for repair.

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1 Answer

Spilt little water on key board no power going into going in


First thing is to not try powering the laptop on after the water fell on it. Next, you should remove the battery off the laptop immediately. When this is done, you should fully disassemble the laptop & thoroughly inspect its inside. Look for any traces of water on the circuit boards & on other components. On circuit boards, water damage appears in the form of whitish traces. These needs to be wiped off. This can be done using a tooth brush moistened with few drops of hand sanitizer liquid.
Check all internal connectors & make sure that no water seeped into them. Dry them if needed.
When you are done, re-assemble back the laptop.
If the water fell on the keyboard & you found out that the keyboard is no longer working, then you will have to replace the keyboard.

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1 Answer

How do you get to the ac fuse on the SWA1801 ?


There are 4 allen-head screws that hold the amplifier assembly in - two on top and two on bottom. Remove these and the entire thing slides out the back. There is one fuse near the power switch and two on the power supply board inside. Be sure to use the correct value.

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2 Answers

Mackie 1200/1400 blows all 4 10 amp fuses


missmatched impedance, insufficient ground, blown transistor.

Jul 20, 2009 | Bob Mackie Mackie M-1400i Power Amplifier...

2 Answers

Engine works but no power is produced


I have a COLEMAN 6250 Watt Powermate too, and it stopped producing 3 hrs into our blackout. I unbolted the four 7/16" bolts holding the end bell assembly, and looked at the circuit board (bridge rectifier assembly) and saw that 4 of the diodes had melted free from the circuit board. This is a $30 replacement part, and seems to be a common problem with these units. http://www.jackssmallengines.com/coleman_control_board.cfm
Other common and cheap to fix problems may be the brushes are worn out. Unscrew the phillips screws under the plastic tab on the end bell of the generator, and pull out the metallic rectangular posts attached to the copper wires. If they are shorter than 1/4", broken, or uneven, they may need to be replaced. They are about $3 each.
I probably drew too much power from 1 outlet on the generator, and it caused the board to fail instead of tripping the circuit breaker. (BTW, the repair shop told me it would cost $550 to replace the entire rotor/stator circuit board assembly. I have a strong feeling they didn't even look at any of the above parts, because they didn't have a clue as to what they were doing!)

I liken this to taking your car in because it won't start, and the mechanic saying you need a new engine!

Good luck!

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Hello nnix,

The difficulty is in finding an "exact replacement" and you may just be out of luck there. But fortunately, almost any switch that can be adapted to fit will function properly. The radio shack part number 275-691 is a DPDT switch which mounts in an approximate 3/4" hole. The leads can be directly soldered into a printed circuit board or if the board has a different hole pattern, you can simply use short jumpers to the switch location.

Here's a link to All Electronics which has 35 different sizes and configurations of rocker switches. Surely one of these will work in the Mackie.

Hope this helps.

May 14, 2009 | Bob Mackie MACKIE M1400/M1400i Car Audio...

1 Answer

SRM 450 Mackie


1)Clean the heat sinks on the amp on the back of the speaker,
2) carefully remove the amp from the rear of the cabinet and look for 'crispy critters' on the circuit board. If you see 'um, either take the amp to a service center, or go to your dealer and get him to order you a new one.
3) if you're goin' thermal, either get higher powered speakers, or tune it back a bit with these. I have a set that has run years in a dance room with no problems. If you are stretching the system to cover a bigger audience, think about another pair.

Oct 04, 2008 | Mackie SRM-450 System

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