Question about JBL PSW-D112 Speaker

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Blows fuses My sub stoped working. dead, no sound, no LEDs nothing. I opened back & fuse was blown, so I replaced it. Put it together & turned it on w/ no cords connected & it makes a humming sound for about a second & goes dead (blowing the fuse). I tried again & same result. What could it be? What should I do?

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I found a post where someone replaced several capacitors with ones he described as titanium and a higher voltage like 100 v rating rather than 50 as oem. He states no more problems. I found this site while searching again. I also found a free download pdf repair manual from JBL - site defined as Harmon, and they show revised parts replacements for these caps - 100 volt. I just bought a used one and not hooked up as yet, but I plan to use slow blow fuses and possibly a little higher rating - not much though, and I believe there is a ceramic type - color solid white - that may withstand the apparant surge. Theres also a recent post somewhere for sale of the amplifer board... 64smi or something like that. Hope this helps. Ken

Posted on Mar 24, 2007

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Posted on Jan 02, 2017

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To check your speaker you can use an ohm meter. First, pull of one of the two wires that connects at the speaker. You should read 4 to 8 Ohms. Also you will hear a little pop through the speaker as you touch the wire. You can also use a 9 volt battery in the same way.
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1 Answer

I got an amp and as soon as i put the fuse in it blows even with the deck of all wiring is correct and i hear a thump from the subs when i put the fuse in, the subs work good on a diff amp


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My goldstar microwave stoped working. No display, its dead. Is their an internal fuse and where is it located. Thanks


You may have a blown internal fuse. You''ll need to unplug the unit, remove the outside cover and follow the line cord and you should find the fuse.

Replace it with the EXACT same value that was labeled on the original fuse. You'll probably be able to find a replacement at any Radio Shack store or hardware store.

Replace the cover and plug the unit back in. Hopefully nothing was damaged and the unit will play again.

Please let me know if I can be of further assistance to you.

Good luck!

- Jim

Feb 28, 2008 | Microwave Ovens

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