My M3 stops working abruptly almost every time it’s turned on. The blue light starts blinking in amber and then the amplifier shuts itself off. Sometimes it happens as soon as I turn it on and sometimes after a few hours of normal playback, so I don't think it has nothing to do with temperature.
The owner manual says nothing about it and I have not been able to get an answer from NAD
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hello Check the connection to speaker with this amp, for any short or any other fault. disconnect the outputs, ie, speakers from the amp, and switch it On, and see the protect display comes or not. If it comes, the fault is internal and the set need service. Your M3 dual Mono integrated amp, is of high output power and its outputs are protected against any overload or short circuit. If the system detect any among this condition specified above, it will show protect mode display. Never load this amp, as protection display is there, as it may damage the speaker or its internal power amplifier section circuits, may cause more money to get it repaired. OK.
Have someone who has experience working with circuit boards take it apart and look at it. They'll probably be able to tell you what parts can be replaced. If it's anything as simple as capacitors and resistors, then you can find the exact parts you need at AllElectronics.com
When they said it was a multilayer structure, that means either there are multiple circuit boards, or it's all surface-mount soldering on both sides of one board. To be on the safe side, assume it's surface mount. It's much more difficult to work on.
It sounds like yo shorted the speaker wires together for a short time and smoked the output section of the amp. The amber light is an indication that the amp is in protect mode. If you attempt to power up the amp and still have the amber light even with all speaker wires disconnected, the amp needs repair. The output transistors for that side will need to be replaced.
check your output stage for bad speakers cable or bare wire of cable touch the body of amp----short circuit speaker cable----bad speaker it self------ bad input cable or defective input device . disconnect all and check if it is ok---start to connect one by one from input to outputs------if all above failed you must contact service center for help.