The nad circuit boards are notorious for being of low quality. The tracks breaks of easily, so eventually, after a lot of debugging, I had to replace the whole pcb. Frankly, the whole operation was not really worth it, but I learned a lot Hello , Just giving you an up date on the amplifier repair. It became way out of my league so I got some professional help last night.
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The nad circuit boards are notorious for being of low quality. The tracks breaks of easily, so eventually, after a lot of debugging, I had to replace the whole pcb. Frankly, the whole operation was not really worth it, but I learned a lot Hello , Just giving you an up date on the amplifier repair. It became way out of my league so I got some professional help last night. It seems that there may be a fault in the actual design so that C dries out and fails and this blows the D which allows massive voltage to the TA and this blows.
This is the protection chip and is hooked to the pin 2 of J connector and this causes the fault in right channel. Just awaiting new TA and hopefully all will be well. Oh yes 4 blown transisitors were located I assume these were to do with other shorts while fault finding the amp.
I have one thats staying in protection mode. Thanks in advance. Cant get it out of standby, no protection lights or nothing. Output transistors measure fine and so do the 4 diodes located on the input board. What could be the cause? Or is it destined for the :trash: jancasper 20th March AM My 2 cents.
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