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Sapare power transformer for a NAD 3240PE

I am looking for the main power transformer for a NAD 3240PE- they are no longer available from NAD

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Posted on Jan 02, 2017

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SOURCE: Hi, I have a second hand NAD 3240PE amplifier, the

Crackling is usually a dirty control. Try using an electronics cleaner (with lubricant) and spray out all of the controls and switches. With the unit off, work the controls and switches back and forth to "spread" the lubricant. I would spray, work and spray again.

Update this with the results and also see if the crackling is related to the overall volume level. If tied to the volume level, there could be a transistor inside that is breaking down and causing distortion.

Dan

Posted on Dec 28, 2009

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I have a RCA T25062 TV Combo problem is, it was connected to 220volts. Do you have a schematic of chasis? Regards George


If 220 volts was connected to it, you might be looking at a few parts to repair that wont be available. It looks like the main power transformer and line input transformer are no longer available.

Sep 16, 2010 | RCA T25062 25 in. Combo

1 Answer

Hi, I have a second hand NAD 3240PE amplifier, the right channel has an intermitent crackle but the left channel is fine, Any ideas as to what might be causing this problem?


Crackling is usually a dirty control. Try using an electronics cleaner (with lubricant) and spray out all of the controls and switches. With the unit off, work the controls and switches back and forth to "spread" the lubricant. I would spray, work and spray again.

Update this with the results and also see if the crackling is related to the overall volume level. If tied to the volume level, there could be a transistor inside that is breaking down and causing distortion.

Dan

Dec 28, 2009 | NAD Audio Players & Recorders

1 Answer

No power in NAD c350


Hi...

Have you checked the rectifier diodes / bridge rectifier . Most DMMs have setting where you can test for forward voltage drop on a diode
0.300- 0.800v depending on the type. If it reads nothing , swap the meter leads.
Also check the leads coming from the power transformer and see if there's continuity. THey will read low value ohms

Apr 26, 2009 | NAD C350 2-Channel Amplifier

1 Answer

Nad 310 no power


The output should be 24v ac. Sounds like you have a busted transformer. Did you check out the resistor in front of the transformer.

You sound like you know what your talking about so I will not bore you with suff like glass fuses and thermal couples.

Good luck, I have had a few items like this over the years. Sometimes it's just best to send them in to the manufacture. I would look for a replacement transformer. 120v ac to 24v ac around 5 amps. Test it out and see if it works... If not, send it in.

Jan 22, 2009 | NAD C320 2-Channel Amplifier

1 Answer

Nad c350 no power at all


Solution if all fuses checked out OK and +/-40V are present on main PCB DC connector from power supply:
Check for +37V and -37V on small sub-power supply PCB - mounted vertically on the main power supply PCB. (next to ribbon cable connector is a layout with voltages.) If the +/-37V are missing check (replace) C501 (0.1uF) on the small power supply PCB for leakage, but also check (replace) R401 (2R2) and R402 (2R2) on the main power supply PCB. Both resistors are fuse-resistors and will have gone open circuit when C501 has gone leaky.

Aug 21, 2008 | NAD C350 2-Channel Amplifier

1 Answer

Blown Mains Fuse


You should repleace the old transformer with the new one

Jun 13, 2008 | NAD C370 2-Channel Amplifier

2 Answers

Nad amp failure


Check fuses mounted near transformer . If blown check output transistor. Also check transistor transistors on small heat sink . they will cause fuse to blow.

Mar 10, 2008 | NAD C350 2-Channel Amplifier

2 Answers

Nad 302 amplifier


sounds to me that the vol control has lost its earth end connection So yes its a problem with the dial control You couls try some contact cleaner But better still lift of the lid and base if possible while the amplifier is not plugged into the power socket and see if you have a dry joints around the vol control pot regards Trev

Mar 14, 2007 | NAD CI9060 Amplifier

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