Its probably at the point where all the electrolytics need changing.
You can buy desoldering guns which will do the job.
You can buy desoldering guns which will do the job.
Sometime after the rebuild, I found that I had a minor issue with powering on the amplifier with the remote. It usually does not power on first time of the day on the first press of the remote "on" button. Usually it will power on on the second press and sometimes a third is needed. This issue does not occur if using the front panel power button. Also the issue does not occur with the remote if I use a completely different remote to operate something else nearby, then use the c390dd remote to power on the amplifier - works first go then. Also after the amplifier is fully powered on - the remote works well to operate the amplifier.
It is kind of like the IR sensor or some of its supporting electronics needs a bit of IR to wake it up before it starts working properly if it has not been used in a while.
I have looked for dry or bad solder joints and have not found any obvious ones. Perhaps I used an inappropriate capacitor somewhere which has caused the problem. Or perhaps it is unrelated to the capacitor change.
The 5V standby voltage measures fine.
Understanding the schematic in the service manual is beyond my current abilities so don't know what else to look at. It might just be something I will live with as it is quite a minor issue. Not expecting any suggestions on fixes here but you are welcome to suggest if you like. This is more just a report on my experience with changing capacitors.
I ended up sending the unit in for repair. They replaced the board to the tune of $700. Now the Bluos module stopped working. Im not spending any more on this this thing. I’m leery of buying anything NAD in the future.
Oh well. This is embarassing. After so many check finally noticed a solder blob on 3 connectors. I removed it and boom everything works perfectly. Phew. Sometimes its so minor mistakes. Big shout out to the OP for the well documented fix. Sure to make this old NAD alive.
Dont think so. What did you mean by remote power on? I dont have the original remote but logitech harmony works flawlessly so far
Oh well. This is embarassing. After so many check finally noticed a solder blob on 3 connectors. I removed it and boom everything works perfectly. Phew. Sometimes its so minor mistakes. Big shout out to the OP for the well documented fix. Sure to make this old NAD alive.