Mackie th-15a overload - Mackie TH-15A Active DJ Powered THUMP Speaker Stand and Cable Set TH-15ASET1

Your best bet is to contact Mackie Tech Support. Here is a link to their Suppot page. Mackie Tech Support
it's likely it needs to go to a repair shop. Here is a link to their service center finder. Mackie Service Center Locater

i) I assume the fuse you mentioned was in the mains plug - did you also check the fuse in the TH15A mains input socket? This is accessed by pulling out the tab in the bottom section of the socket (below the centre pin). This is a 3.15Amp antisurge fuse, 20mm type.

ii) If this fuse has blown, then replace it & all may be well ...... but if it blows again, then move to step iii).

iii) With mains disconnected, remove rear panel (outer screws) & check the power supply PCB for damaged components, especially R111 & R112 (100ohms). If the latter are burnt or open circuited, then the amplifier module may have blown.

regards, Dave

"How to replace bass driver in mackie thump 15a".
Did you mean,disassembly the speaker enclosure?
Just remove the 16 screws at the rear cabinet, using a screwdriver.
Then remove the 4 screws that secure the speaker, using the hex key. Is the bass driver blown up / broke?

Almost certainly the amp has failed, as per usual with these, you need to take it to the repair shop and see if it's worth fixing it then sell it once working or for spares if not. Sadly whilst Mackie make some really good kit their powered speakers are not amongst the most reliable

Jose Miguel Carcamo Cruces do you have pictures of these j112 fet ? Thank you!

Could be the crossover has died or the main speaker winding has failed. Open her up and connect on side of the main speaker direct to a 9v battery and then wipe the other wire over the other terminal. If you get a crackling from the speaker then it's likely the crossover, if there is no response at all from the speaker then it is dead and possibly the crossover too.

Remove 115V jumper in the Power Supply Unit at secondary side in order to operate Mackie TH-15A Speaker on 230V. Download Schematic Diagram from the below website:
https://elektrotanya.com/mackie_thump_th-15a_sch.pdf/download.html#dl https://elektrotanya.com/mackie_thump_th-15a_sch.pdf/download.html#dl

Make sure ALL interconnected equipment is powered from the SAME receptacle. Use extension cord if necessaary. Use ONLY balanced interconnecting audio lines as well. You have a ground loop... make sure all power connections are three wire.

Yes, the amp section can be replaced. It won't be cheap however. Your best bet is to contact Mackie directly. Do a web search for Mackie Parts and contact the service center. Thay will either take the order directly or refer you to a local supplier based upon your location. They have always been extremely helpful when I used them in the past.

Dan

The internal amp is in need of repair. Are there any other symptoms or signs?