JBL Balboa SUB/230 Subwoofer: Transformer Thermal Fuse, Replacement & Output Voltages

Hello everyone, I am the owner of the subwoofer as in the title - unfortunately my kids made a party during our (parents') absence and it turned out that the sub. died. I checked what could have happened and it turned out that the transformer was dead. It says that it is thermally protected, but as it turned out, the "designers" did not provide for the replacement of such an element - it is not possible to get to this thermal fuse for a possible replacement or "bypass". I have tried searching for trafo data on the net, but without success - there are some schemas where it is used but no trafo data is available. So I have a question: Can someone help me and tell me what are the output voltages, power, or what replacement can I use instead? Data from the sticker of this transformer: TT0869803320 / 150e8604106 - wire colors: primary 2xblue, secondary 2x yellow, 2x red, 1x black. I would be grateful for any tips and help.

Such a transformer can often be revived. Therefore, carefully tear the insulating paper or film from the top of the primary winding on the side of the leads. The fuse is located under 3-4 layers of insulation. The primary winding is soldered to one terminal of the fuse, and one of the ends of the cable is soldered to the other terminal (blue color). Connect the terminals of the damaged fuse with copper wire of 0.15 - 0.25 mm in diameter. Carry out all manipulations very carefully. There is a chance of resuscitation, and it will not work - it doesn't matter, the transformer is out of order.

At the end of the topic, there are several photos showing such an operation.
http://old-fidelity.de/thread-21801-post-908091.html

If you were successful, you can even buy such a fuse.

Welcome back,
Thank you for the tips and the link to the German forum. I have exactly the same problem as discussed on that forum. I found out from it (I checked it before) using a translator that it was a version of the transformer made according to English standards - the primary winding is under the secondary winding and the thermal fuse is between them, so it is exactly in the middle of the transformer and there is no access to it. You would have to unwind the secondary winding - which is pointless - I prefer to choose a different transformer, but unfortunately I do not know the output voltages / currents to look for a replacement. I hope that someone has already met such a luck and knows or remembers its parameters. regards

Hello,
I am writing for those interested - I solved the problem with the transformer, attached photos where you can find the output voltages of this transformer and from which side you can "get" to the thermal fuse. The material on which the windings are wound is quite plastic, to remove them I frozen them and with a gentle tap with a wooden strip they break nicely without damaging the wire insulation. Finally, I installed an automatic thermostat 75 degrees Celsius (the one I had available) outside the transformer - when it warms up, it turns off the transformer, and when the transformer cools down, the sub should continue to work. It is not worth breaking the red insulation that protects the windings - it will not do anything. Regards.