Question about Level 9 Sound Designs MM-1000 Computer Speakers

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No Power to Sub

I think that my power supply isnt working anymore... when i opened up the casing it looks like the fuse might be blown? can this be fixed or is it something else? please help....thanks

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If you think the fuse is blown replace it take card you use the right one (fuse) then see if it goes.

Posted on Sep 04, 2007

  • Anonymous Sep 04, 2007

    sorry I misspelt a word just above or below. It meant to be care not card.....sorry

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With it unplugged take the top off and look inside. See if you can see any signs of damage and look for fuses. If the fuses are blown, you could replace them. But they are likely to go again. In which case you will have blown the power amp devices on the heat sink.

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LG 42PQ30 plasma tv wont turn on anymore, when you plug the tv in it makes a click noise and when you hit the power button the blue light comes on then changes to red after couple seconds. Note the...


I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
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1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.5_15_2012_1_19_09_pm.jpg

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MY SCREEN KEEPS GOING BLURRED AFTER NOT USING IT FOR 20MINS AND ISNT VERY SHARP . I WIPED XP OFF MY SYSTEM AND PUT ON VISTA AND SINCE THEN MY ACER MONITOR X193HQ IS HAVING THE ABOVE PROBLEMS


Does it do the same when it is hooked up to another PC? If it does, it may have power supply DC filter problem, or worst case will be the LCD panel.

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Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

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My lg lcd is not working no power


Check the fuse and caps in the power supply first.
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http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

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