The RIGHT front channel of my NAD T752 is not working properly. THere is a faint sound coming form the speaker, but that is all. I have run all normal diagnotics (switched speakers multiple times, changed modes, checked connections and re-wired the speaker connections. I have no idea what this may be. It was working fine recently and all of a sudden this. Please help is you can. Thanks.
I have had the front, left and right channels go out over time.I have fixed all of them, and each time it has turned out to be a cold solder joint.While I love NAD and will continue to purchase there equipment, this generation is plagued with poor workmanship.
To fix the channel going out, I removed the top cover.Back cover and 2nd card from the left (looking at the receiver from the back side).This card handles all of the audio processing.I have found cold solder joints all over this board which has caused channels to suddenly go quite.I have never found a bad component.Also, I have cleaned the interconnect to be backplane (board that the audio processing board connects to) in the case of the center channel going quite.
If you have poor FM reception, the first board from the left (looking at the receiver from the back side) may have a cold solder joint on the coaxial connection for the FM antenna.
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well..this is one for the books. Can you tell me what the ratings are between the 252 and the 752 impedance matching wise? even though it might work sometimes, impedance matching can wreak havoc between mismatched amps.
Hi there I have a C340 that has similar problem, you must have bought this from ebay, lol.
Nad made a mistake on the C range, the pre - power link can be shorted out. if the pre is shorted out it takes out the pre amplifier stage, I have managed to get the right channel working, I will keep you informed what is the cause of the left channel. I have replaced the pre-amp IC and a couple of Jfets and transistors. Once I have repaired the Amp I could repaire yours if you like???
I hate to say this but the repair was not complete. If the sound levels are different with the balance in the middle, then either they missed a problem in one of the pre-amp stages, or they used an incorrect substitution for transistors in one or more stages. This unit should be brought back to complete the repair.
Any additional detail would require that I see the actual unit and poke around inside with test equipment.
Its not working correctly I have a few different types of center channels and they all have equal sound no matter how many speakers are in them. Connection in speaker box is bad or you may have a blown speaker
Only the right channel had a sound,the left channel is mute, whatever adjustment you did and whatever balancing you done nothigs happen,even you interchange the speakers. The problem is in the power amp. The STK IC there is busted already, it's better to change it with a new one so the performance become normal again.