View Full Version : Ugh oh....
aksteve
11-24-2012, 08:58 PM
im worried that my carvin MB10 may have just about taken a dirt nap.....Im getting nothing but static (no, sillys, not on CHannel Z....for all you B-52s fans LOL) when i power up the amp. ive tried to mess with the EQ to no avail and the volume is also at abut HALF of what i should be.....i really dont want to have to send it back to Carvin. I see tht there is a Fuse at the Power chord input to the Amp. has anyone had that go bad on em? and could that have an affect on static and low volume?
I have treated the amp with kid gloves since i got it, and the only giging it gets is my sold out shows at the My room club in front of a full house of two cats, a dog and a russian tortois, so its not been abused at all.....help me obi wan bass people, your my only hope! LOL
hope everyone is having a great Thanksgiving holliday weekend!!
Steve
Bassix
11-24-2012, 09:09 PM
THAT stinks. Might be something minor - the cable you plug into your bass/amp might have a short in it or the battery in your bass could be dead (assuming active electronics). Switch them out with spares and see if (pray that?) your thunder returns. :)
aksteve
11-24-2012, 10:35 PM
Thanks Bassix. the basses are all passive, so i was thinking some sort of short also. its weird, worked perfect last night.
DaveB
11-24-2012, 10:44 PM
I had a similar problem with my MB210 a while back. It was really noisy with lots of hum and static. Turned out that the power plug had worked out of the power strip a little bit and was not supplying a good ground. Check the power cord to make sure it is plugged in good at both ends. A good ground is essential to a clean signal.
Good luck.
Ditto
11-25-2012, 01:02 PM
I don't have a Carvin, but my Fender BASSMAN was doing that. So I opened it up just to look in the amp (I like doing that kind of stuff) and found that the cable connector had come apart inside the amp. I screwed them back together and BOOM. it all worked fine. Now I gave it to my wife to use as a keyboard amp.
aksteve
11-25-2012, 07:03 PM
I might try that. It would be cool to see what the inside of the amp looks like anyway :)
stantonl
11-25-2012, 09:22 PM
I've read that the new Carvin amps can have issues with their ribbon cables coming disconnected inside the amp, might want to open her up and take a look. I believe I read it on Talkbass, you could probably find more info if you did a search there. Good luck!
aksteve
11-25-2012, 09:37 PM
Thanks for the heads up! i will do some digging!
5Slinger
11-26-2012, 04:50 AM
WAIT! before you do that, you might want to check your warranty conditions. I think if you open it up, you void the warranty. I know it sucks, but if it is a real problem, I would send it back to carvin and let them fix it.
AB
TobiasMan
11-26-2012, 11:26 AM
+1 If it is under warranty, unless it is something "non-invasive" like cleaning the jacks, let the factory look after restoring it to like new condition.
aksteve
11-26-2012, 10:47 PM
well, now I REALLY hope that its not something serious.....my one year purchase anniversary was november 11th....imagine that! its only a one year warranty! ugh...oh well. i guess there is no time like now than to learn how to work on my own stuff! I am going to email them anyway before i do anything. maybe they will have some idea of what i may be facing. thanks again guys!!!
ghsky1
11-27-2012, 10:08 AM
Be very careful when looking around inside. Remember, even when unplugged amps will store potentially LETHAL voltage in those capacitors.
TobiasMan
11-27-2012, 11:20 AM
Yep, before you go poking around at components inside your amp, you should find out how to discharge the capacitors - they do hold a wallop of an electrical charge, even when the amp is off!!!!! :eek:
aksteve
11-27-2012, 09:50 PM
thanks for the heads up! i had no idea! that would be below average LOL
aksteve
12-02-2012, 03:16 PM
So a buddy of mine has a lot of experience working on electronics and knows how to discharge a capacitory, and how not to shock the heck out of me! :) so, we are going to leave it unplugged for the week nad dive into next weekend. he says he things soomething is loose, so here is to hoping!!
I've always just let an amp tech work on my Carvins when there were problems. The amps are great and a great value, there are just some idiosyncratic ways they're built that some techs are comfortable with, others not so much. If you are in Anchorage this may be prohibitive, but I might contact Carvin and see if they can just swap a rebuilt Microbass head for yours or do a repair and quick return. Just a thought....
aksteve
01-19-2013, 10:55 PM
Thanks Roy! i did just that. they told me to send the head back....turns out it they replaced the Preamp Circuit board....wonder if a power surge could have caused it??? it cost me 135 because i was a month past the warranty, but the customer service was great. should get the head back next week!!!
BluesWalker
01-27-2013, 06:41 AM
+1 If it is under warranty, unless it is something "non-invasive" like cleaning the jacks, let the factory look after restoring it to like new condition.
+1, I had a Carvin combo several years ago, it went out while under warranty. I mailed it back and they send a new one.
aksteve
02-01-2013, 04:32 PM
So i think i found the culprit....I received a reply back from someone on the Carvin website forums who said that static electricity can blow a Pre-amp. That makes sense to me living in the climate i do up here. we have a TON of static...i have also been known to plug in or pull the plug while the amp is still on, so between the two things, i think that is what caused the failure. now i know though and i can take the extre precautions! love the little amp! I want to get the 210 cab or a 1x15 to go with it!
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