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Re: NAD 5425 CD Player display light out
Yes it does have backlamps.
They are soldered to the PCB so you will need a few tools like a soldering iron, philips screwdrivers, solder, and some replacement lamps. Replace the lamps with this type from Farnell electronics. They have a 15000 hr life expectancy and last alot longer in the unit. I have tried many types of lamps over the years, and found these are the best choice if you want them to last.
FOR YOUR SAFETY-BE SURE TO DISCONNECT FROM THE MAINS BEFORE REMOVING THE LID
To get access to the lamps, you need to pull the main PCB out of the chassis to then get access to the bottom side of the printed circuit board where the 2 screws that retain the white lamp reflector assembly. Change both lamps with the type I mentioned,
Be careful not to flex the LCD display that is now exposed, it is quite fragile with the support of the lamp reflector cover no longer in place. ... reverse procedure to reassemble and away you go.
I am more than happy to talk about this solution with you further. Just ask away. Cheers
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Try this: 1) Disconnect the powercord from the plug!! 2) Remove the cover 3) Reconnect the powercord, turn on the power and press eject. 4) Turn of the power - beware, there is still power on the trafo!! 5) Now you have to carefully clean the laser (round glas-like item in the middle of the drawer) with a cotton swab filled with isopropyl alkohol. 6) Then wait at least 1 minute. 7) Turn the power on again and try to play a cd. If it works as it should then you have succesfully repaired your cd-player :-) Otherwise you may try again. 8) Now disconnect the powercord and replace the cover.
If this doesn't help I'm affraid you have to turn it in to your local shop for further invistigation and repair...
I've dealt with this type issue quite a bit. Believe it or not the drawer belt needs to be changed. If the drawer isnt drawn all the way into the unit...the disc motor wont spin and ....you get rejected
From your description, it sounds as if the noise is coming from the circuit that controls the display backlight. If I recall correctly, the C520 has an EL backlight just like the C521 (which I have one of). On the front of the circuit board, there should be a little yellow trimmer potentiometer that controls the brightness of the display. It may be that the noise will go away if the brightness is turned down some. If the noise varies as you turn the controller, but doesn't go away completely, the backlight may need servicing.
well, typical problem i nad cd players, and also receivers by the way.
The proble are tha nad use standard glow lamps. And as we know, the blow!! And often when you move around with the cd. Well i do have repair note for this one also.
go to the menu: 'amplifier repair notes' (yes includes cd players ;) )
Here you can find free amplifier repair notes, an go fore nad 705 repair fix (same fault with defect bulb's as in you nad cd)
And also a technical repair movie showing you the hole process of the 'workaround' this fault i NAD 522 (NAD 501, 502, 512 and more)
best regards michael miguelovitch
The CD player has a sensor that is supposed to detect when a disc is inserted and spin it up etc. yours might be the problem, either it has some loose connections (that you haven't noticed) or it simply misbehaves. Another thing could be the motor itself that somehow 'misses' the spin up signal and needs a 'manual' boost.
The best solution in your case is probably to bring it to some lab.