Question about SpeakerCraft BB1235 12-Channel Amplifier

1 Answer

My SpeakerCraft BB1235 was the only device in my house that stopped working after an electrical storm. I checked the fuse in the back, but it is not blown. I also opened the case, but there was nothing burned or melted that I could see inside. I am very competent with electronics, but I don't know what to test or how to test it for damage or if there is a common failpoint that might be worth just replacing. Any advice would be great! I need to get my sound going and can't afford to buy another one of these things!

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 133 Answers

I can't really say what failed in your unit, but as far as electrical storms go, it could be just about anything, so i can only suggest some possibilities:

- ANY of the components sensitive to static electricity (fet transistors, cmos ICs) may have recieved a fatal voltage spike

- in general, ALL of the semiconductors are to be regarded as sensitive to static electricity even if some of them may be able to sustain quite some spiking, so bipolar transistors, diodes or diode bridges, voltage regulators, optocouplers and ICs of any kind are also on the list of possible fatalities.

- other components that may have been damaged are the low voltage capacitors, sometimes they will blow up, sometimes there will be a very tiny crack or a burn spot which is very difficult to notice, and sometimes it will be only internal damage so it is impossible to track it down without measuring or scoping the circuit

- it is ok to check for any internal fuses (standard type, auto recover type or semiconductor type) and see if they are ok

- also see if there are protection varistors near the main power input and check them out, sometimes they may fail

Hope it turns out to be some minor damage.

regards

Triarcuate

Posted on Sep 29, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

SpeakerCraft Sound Source In-Wall Audio System Remote


Did you ever get any help with your request? I have a remote but it does not work.

Thanks,

Al

Mar 18, 2012 | SpeakerCraft Audio Players & Recorders

2 Answers

We have a SpeakerCraft MZC - 66 amp. This powered and operated ok on Friday and has just stopped working. There does not seem to be any power going to the unit. Any ideas?


is this generstion 1 or 2 on the mzc.. gen 2 has a fan built in on the top, if it is gen 1 Im sad to say every one I encountered with this problem needed to go back to speakercraft. the will sell a refurbished one at a discount

Apr 04, 2011 | SpeakerCraft MZC-66 Amplifier

3 Answers

I have a Merlin 230T garage door opener which abruptly stopped working altogether. Could it be the fuse?--or any other suggestions.


There is a fuse in a Model M-230T and I have seen a service man change it.Now that the fuse has blown again, I want to change it myself BUT can't now find it!

Can anyone please offer a guide to changing the fuse?

Sep 22, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Our SpeakerCraft BB835 won't power up. Could this be as simple as a blown fuse?


hello,
this could be a fuse, check for other fuses on the board.
Also check the power transistors using a multimeter..

May 23, 2010 | SpeakerCraft BB835 8-Channel Amplifier

1 Answer

Durning an electrical storm the ups shu toof and now does not work is there a switch or fuse that needs to be replaced vern


No electronic equipment should be uswd during electrical storms. There is always a fuse at the back of the device. Unscrew it and check the glass viol for a broken wire inside. If yes, then replace it with the same specification viol. If not then the damage is serious and needs professional help.

Aug 16, 2009 | TriPro Power Tripro Maruson Technology UPS...

1 Answer

No light and stopped running


check the thermal fuse on the blower housing it may be opened(blown)

Apr 12, 2009 | Dryers

1 Answer

Crackling and popping sounds in surround sound speakers


Could be your head unit or the connection to the speaker may be bad. Also if the wire to the speakers in your ceiling is bare and touching any ground it would interfere. Start by checking connections by playing something and messing with wires. Listen for a difference. Next check by putting the wires that power those speakers in a known working output and listen for different quality

Apr 04, 2017 | SpeakerCraft 8" 150W In-Ceiling Speaker...

1 Answer

Instrument panel


I don't know but seems to me that electrical storm did not cause this, a car is a pretty protected environment (also for the electrical equipment) for such stuff, unless you had a direct lightning hit.
I presume that a hit will be very noticable and I always heard that cars are very seldom struck and therefor are a very save place in that respect.
If it is caused by the electrical storm , I would try to disconnect the battery for a period of time and try again before replacing computer and such.(check fuses to rule everything out)

Jul 24, 2008 | 2001 Chevrolet Malibu

Not finding what you are looking for?
SpeakerCraft BB1235 12-Channel Amplifier Logo

Related Topics:

247 people viewed this question

Ask a Question

Usually answered in minutes!

Top SpeakerCraft Audio Players & Recorders Experts

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

James Oliver

Level 1 Expert

5 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a SpeakerCraft Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...