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What is a correct replacement relay part number in NAD 2150 output stage?

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How to bridge NAD 7150 with 2150


Bridge connections

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Sep 09, 2012 | NAD Audio Players & Recorders

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Hi My toshiba CX36H60 has a problem -- no picture but sound is good. what could be the issue and how to rectify it. Please suggest.


As sound output is ok, main board is correct with respect to sound output, video IF and ther stages. The fault lies on the horizontal output section. It may be LOT fault. Check it further for horizontal oscillator stage, and horizontal output stage. Check the collector voltage at the horizontal driver transistor. If you have a frequency meter, check the frequency of that point. It should be somewhere near 15625Hz. If the frequency there is Ok, then proceed to horizontal output stage. Check the horizontal output transistor. If it seems to be faulty, replace it with similar type and number. If the replaced horizontal output transistor heats abnormally within seconds after swich on the set, surely LOT has troubel. Replace it also with same model mumber and type.

Oct 16, 2010 | Toshiba CX36H60 TV

1 Answer

Connecting NAD 2600a amp.


Never connect incompatible connections. Speaker outputs are for speaker inputs. Period.

The various inputs on this or most any amp are for Line Level signal with the exception of anything explicitly labeled "PHONO" as that would be for a non-preamplified turntable ONLY.

From what I have found online, Lab-In was a NAD feature that restored the frequencies that were rolled off when turntables were being used in the (assumed) preamplifier that fed this amp.

http://web.295.ca/~peak//audio.html

"NAD belleived at the time that practical PHONO stages and the preamp and power amplifier stages be rolled off at subsonic frequencies to prevent subsonic wow and flutter from Turntables and supersonic frequencies (EMI/RF/Radio) signals from getting into the system in the first place. Their notion was that if your ears cannot physically hear it, then why amplify it. For the PURIST, there were a set of LAB IN amplifier inputs with more extended response called "LAB IN" inputs"

Use the Lab In's UNLESS you have a turntable source.

Aug 22, 2009 | NAD Audio Players & Recorders

2 Answers

Excess clipping on nad 372 amp


อิอิ ขอบคุณคับ

May 24, 2009 | NAD C272 Amplifier

1 Answer

No sound output, regardless of channel selected, for 30-60 seconds


Hi Dan

The first click is the power relay connecting up the main transformer, the second click you normally hear is the speaker protection relay. When a fault condition is present in the amp, the protection circuit prevents the speakers connecting to the amp by NOT operating the relay. As the unit "settles" and works after the delay you noticed, what ever issue the amp is balancing itself it. It sounds like a leaky capacitor in transistor in the output stages. This can often be located with quick bursts of freeze coolant spray. It may also be a dry joint in the soldering about the driver and output transistors, always pays to have a visual look at it whilst you are in there. I also check power regulator stages for dry joints. The fault will be on one channel if it is signal path related, and both channels if power supply related. If you are familiar with electronic repairs, get in and have a look yourself. If not, get a NAD service guy to take a look at it for you. Good luck. Feel free to ask me any questions you may have about it.

regards
robotek

Aug 14, 2008 | NAD C370 2-Channel Amplifier

1 Answer

The right channel on my NAD intergrated amplifier C320Bee no longer works.


if you did test for your cable and speaker and you find it fine-your problem will be in output stage of your amp and needs aid of service center.

Jun 11, 2008 | NAD C320 2-Channel Amplifier

1 Answer

Climbing DC offset then protection mode


Hi there

Firstly, check for conductive hold down glue about the output stages. This can cause the problem you have. Or there may be a failing component somewhere in the output stage of that channel. Check for leaky transistors,diodes an capacitors. You will need to remove semiconductors to check for leakage, If you dont have alot of experience faultfinding amplifier power stages, I suggest you take it to a NAD authorised service center.

regards
Graeme

Mar 27, 2008 | NAD C370 2-Channel Amplifier

1 Answer

Nad 214 amp


problem is- intermittent speaker relay. You can cleaned contacts or better upgrade relay to better one (sealed)  Dariusz

Jan 03, 2008 | NAD 712

3 Answers

NAD C340 has lost ability to switch between inputs


I have the same problem which started about a month ago and seems to be getting worse. I also noticed today, that 1 channel is significantly louder than the other - fault in the pre-amp stage, as feeding the power stage directly gives balanced, albeit extremely loud sound! Looking on eBay, I found someone else selling an amp with both problems. It would nice to think that NAD would acknowledge a design flaw, and fix for free, but my amp is 5 year old.

Jul 14, 2007 | NAD C340 Integrated Amplifier

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