I have a NAD T-753 receiver that is about 13 years old. It shuts down immediately after I turn it on. Replaced a blown fuse and tried hard reset, neither helps. Help?

if the receiver turns on and operates then eventually turns off due to protection mode its because a wire is shorting out the receiver.if it doesn't turn on or goes straight into protection mode then its probably time for repairs or a new receiver.

If your main power fuse was blown, there would be no power at all. You may be looking at a blown preamp or an overheated component inside your receiver. You may want to take it in to a service technician. Have you tried to contact Philips customer service?

Hello
There are three fuses with your NAD surround receiver.

Reference No Part Number Description

M751*AH 5120-0200-0 Fuse 5A 125V Time Lag 5x20 MM MITI/UL/CSA

M754*AH 5120-0052-0 Fuse 1.6A 250V Time Lag 5x20 MM UL/CSA
M752*C 5120-0024-0 Fuse 3.15A 250V Time Lag 5x20 MM SEMKO/VDE

Check them first and inform me which one has blown out. I'll give you detais after that. OK.

Blown fuses don't self-heal. If power comes back there is no blown fuse.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Does it actually FEEL hot when it shuts down? Ther could be dust bunnies inside it.

http://www.retrevo.com/support/NAD-C315BEE-Amps-manual/id/8043dj584/t/2/

These things only have so many protection cycles in their lives. If you can't find a cause for the thermal shut-down and resolve it you should take it to a tech for a check-up.

Look for shorted output transistors or possibly shorted rectifier diodes. An immediate fuse blowing up usually means that the power supply is the problem. Keep us posted.
Dan

1.due to some short circuit in your receiver circuit has made the fuses blown
2.Replacing the fuses alone does not get solve.
3. Check the reciever power circuit
4. check whether output is being short circuited
5.Contact service centre

Unplug all the speaker wires first, then unplug the unit from the wall for at least 24 hours, The plug back in without the speaker wires or anything else plugged in. Then see if it goes to the protection mode. If it does not, plug in each speaker at a time, and see if any speaker, when hooked up, makes the receiver shut down. If it does shut down, My friend, I'm afraid you will need to take this unit into a repair shop, OR get a new unit. Good Luck

This maybe an easy one. Have you unhooked all the wires going in to the stereo. "SP wires" means you have wires to the speakers are touching and the stereo is shutting down to avoid overloading. Hope this helps...