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"speaker output circuit breaker" in a Soundstream USA 364 & should it reset automatically?

A

Alan

Jan 1, 1970
0
Greetings,

Just had my old Soundstream USA 364 installed in a new car (after
working just fine in my old one) and, within a few days, the left side
of the "channels 1-2" half went completely dead. The right side is just
fine, as is the "channels 3-4" section.

Upon reviewing the manual, the "PROTECTION CIRCUITRY" section
documents:

- Main power supply fuses.
- Speaker output circuit breakers.
- A fail-safe thermal protection circuit....

Tried calling Soundstream to get more information the "speaker output
circuit breakers" and their behavior, but was not able to obtain a
clear answer.

The amp was fine when I shut down and the channel stopped working
immediately upon power up a few hours later (with the volume way down
too). My suspicion is that a transient may have blown the "circuit
breaker" for that channel when I shut down, but I have no idea as to
whether it is a self-resetting mechanism, simply a fuse (that can be
replaced), or perhaps something else. Most importantly, I'm hoping to
find out if it is a self-resetting device or does something need to be
replaced when it blows?

I've swapped out the inputs and outputs and have definitely isolated
this one amp channel as being the only problem. Am hoping to gain a
little more insight before I go through the process of having it ripped
out and sending it out to California for repair.

Any help would be greatly appreciated!

Thanks a lot and take care,


Alan
 
most amplifier 'protection' schemes do not reset. There are most
likely faulty and failed components that need to be identified with
test equipment and technical experience..... and then replaced.
electricitym
..
..
..
 
A

Alan

Jan 1, 1970
0
Hi electricitym,

Thanks very much for the info. By the way, the component (circuit
breaker) in question is an off-white/grey rectangular device that has a
jagged "S" logo and the following part number (two lines):

A-40
5X05

I'm guessing that that it may be rated at 40 amps (hence the "A-40"),
but I can't seem to find any reference as to what this compenent really
is and how it works. If anyone here knows more about it, I'd really
appreciate some additional information.

Take care and thanks again for your help,


Alan
 
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