July 3, 2020


Download NAD SM service manual & repair info for electronics experts. pdf NadS-Service-manual · pdf NadService- NadA-Schematic. pdf · pdf NadOwners- . NadPE-Service-Manual · pdf NadPE- . Hi all – I bought a 2nd hand NAD PE last week. Was great for one night, then tonight “pop”! Gone. My wife reported a burning smell today.

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If you are not familiar with electronics, do not attempt to repair! You could suffer a fatal electrical shock!

NAD 7240PE User Manual – Download

Instead, contact your nearest service center! Please, do not make a copy of the downloaded manual and do not offer to sell it, just use personally to repair defective appliance! Good luck to the repair! Looking for other manual? This file is downloadable free of charge: To open downloaded files you need acrobat reader or similar pdf reader program.


In addition, some files are archived, so you need WinZip or WinRar to open that files. Also some files are djvu so you need djvu viewer to open them.

These free programs can be found on this page: NAD amplifier – power transistors getting hot. This one had been sitting in a barn for years.

Powered it up and the large power transistors on the heat sink would get hot after a time Speakers sounded like they had some DC on them Went in and recapped almost the entire product save for the 7240pr large 50V PS caps which appear to check ok. None of the high power or driver transistors mounted to the main heat sink were shorted.

Powered on but no audio, and noticed the fuses to Bridge D were melted open. I believe they were ok before. It seems like something I did maybe is causing this, like a capacitor in backwards, which I am doing alot of lately for some reason.

Seeking NAD PE Service Manual/Schematic – Service Manuals – Community

Capacitor still checks ok, so will re-use it. Short is still there though Im guessing R is adding in 5.


Any ideas out there on what to check next? I am guessing this cap in backwards caused the voltage applied to a component to be reverse and its shorted. Or would this be normal with a reversed cap installed, and putting it in right would be how to fix it?

NAD 7240PE Specification Sheet

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