Oscillator XTAL 701 in NAD C740 xcvr ???

[d0g]

Hello,

Hoping to get some clues with this.

I have a NAD C740 receiver that eventually stopped powering on. I took it to my retailer/repairer who diagnosed it as a faulty oscillator xtal 701.

They claimed that this part was no longer available and therefore could not fix it. This seems a little strange to me given that;

- it is not that old.
- there was no mention of attempts to source an alternative part
- I have not been able to find any oscillators in any NAD schematics that I have found to date.
- an oscillator appears to be very generic to my very limited electronics knowledge ??


Is my repairer telling me porkies to get me to buy a new amp ?

Should alternate parts be available to repair this ?

Cheers

[MaxS]

Hello,

Try to get schematics and show them to us.
For me, the cristal is a part of tuner but, I may be wrong.

Max.

[poynton]

..................unless it's part of the IR remote ?

[d0g]

I haven't been able to find the schematics unfortunately and am reluctant to pay as it is money that I could use for a second opinion...

To my thinking, it seems unlikely that a problem with the tuner or IR functions would prevent it powering up ??

Thanks, I appreciate your comments.

[es44]

Well, the Cpu would need a x-tal for sure.

I'm a little bit puzzled here, you mention a, quote: "Oscillator XTAL 701 in NAD C740 xcvr ??? "
To me an xcvr is a transceiver ( transmitter/receiver )
Anyway... I I have a SM for a Nad C730 Receiver, wonder if it's close enough to the C740 to be used for anything ?

If that's the case, then just drop me a mail, then i'll send it to you d0g.

Best regards
Ebbe

[d0g]

Thanks Ebbe,

Sorry for the confusion with my abbreviations - it should have read '.. in NAD C740 receiver'.

Please could you send the schematic to me at dmaltern8-safe ' at' yahoo.com.au - That would be awesome.

Cheers

[jaycee]

What's printed on the part, and what IC's is it near to?

[d0g]

Hi Jaycee,

I have not yet been able to identify the part - this has contributed to my suspicion...

cheers

[es44]

Originally posted by d0g

Sorry for the confusion with my abbreviations - it should have read '.. in NAD C740 receiver'.
Cheers

No problems It's just me being too picky

Hope You received mail, and that it's close enough.

Best regards
Ebbe

[poynton]

Originally posted by d0g
Hello,

Hoping to get some clues with this.

I have a NAD C740 receiver that eventually stopped powering on. I took it to my retailer/repairer who diagnosed it as a faulty oscillator xtal 701.

...................................

Surely, a faulty Xtal would not prevent the system from powering on?

Do you mean it's dead or what ?


Andy