Markbass LMK Just Died? Help!

faulknersj · #1 06-13-2010, 06:29 PM

I was in the middle of soundcheck when my Markbass LMK just lost power. It was as if a fuse had blown but I don't think these heads have fuses? It will not turn on, no power, no lights to indicate power and I was wondering if anyone has experienced the same thing or has any ideas? It would help to hear from some tech savvy TB'ers! Gracias!!

faulknersj · #2 06-14-2010, 11:30 AM

Help....Anyone?

Rick Auricchio · #3 06-14-2010, 11:33 AM

I presume you tried a different power outlet elsewhere, and swapped the power cable?

Does it power up with the speaker cable disconnected?

fretno · #4 06-14-2010, 11:34 AM

It does have a fuse below the AC plug .

faulknersj · #5 06-14-2010, 11:37 AM

Thank you for the reply. I have tried all of those options and it simply will not turn on at all.

BassmanPaul · #6 06-14-2010, 12:02 PM

Did you test the fuse??

Paul

pasta4lnch · #7 06-14-2010, 12:06 PM

ya know something similar happened to me w/ my LMII - the amp would shut off. odd, always on the first tune of the night (even in the same spot of the song! - my slap solo of course

) happened 3 different times (3 different venues, one of which I've played before). but would turn back on after I shut down and turned it back on. . .

odd

faulknersj · #8 06-14-2010, 12:07 PM

Thank you for responding!So there is a fuse? Where is it located?

Rick Auricchio · #9 06-14-2010, 12:11 PM

Often the fuse is inside the power connector. There should be a little tab to pop open to reveal the fuse. Check the manual, and be careful not to force anything when you try to access the fuse---you don't want to break the fuse holder.

The attached picture shows a typical fused power connector. Yours may be different, but this gives you an idea of where to look.

faulknersj · #10 06-14-2010, 12:23 PM

Thank you Rick and Paul!! That's it...a blown fuse! That is the first thing I thought of but because of the location and barely visible markings I couldn't locate it. Another TB success story!! Hopefully this will help others with the same issue in the future!

Rick Auricchio · #11 06-14-2010, 12:24 PM

When you buy a replacement fuse, keep a couple of spares in your gig bag. Having spares seems to guarantee that you'll never need to use one!

faulknersj · #12 06-14-2010, 03:19 PM

Update. The LMK uses an 8 amp 125 volt fuse. So far I have been to Radio Shack, Guitar Center, and Home Depot and none of them carry this fuse. I will post a solution as soon as I find one.

fretno · #13 06-14-2010, 03:21 PM

That fuse holder actually has a spare located inside of it , check and see

Rick Auricchio · #14 06-14-2010, 03:34 PM

http://www.action-electronics.com has them. You can use a 250v fuse; the voltage rating is the max allowed, so on 120v it's fine.

You can probably go with a slow-blow type, unless the manual says no to.

Direct Link

faulknersj · #15 06-14-2010, 04:01 PM

Ok....The Saga Continues as they say....When I turn the amp on it is blowing every fuse that I put in. The light never comes on at all, just flip the power switch to 'on' and pull out another blown fuse. Any ideas?

Rick Auricchio · #16 06-14-2010, 04:09 PM

Try powering without a speaker cable, just in case it's a problem with the cable or cab.

If an amp blows fuses, it needs repair.

BassmanPaul · #17 06-14-2010, 04:26 PM

Failing that, your output stage is probably toast. If you still have a warranty take it back to GC and get a new one. No warranty then to an authorized repair centre.

Paul

faulknersj · #18 06-14-2010, 04:29 PM

Any idea regarding the cost of such a repair?

**Freddels** · #19 06-14-2010, 04:42 PM

Have you contacted Markbass yet? Let them know what's going on and see what they suggest.

faulknersj · #20 06-14-2010, 04:48 PM

I sent them a message via their website, any other suggestions?