NAD 522 display

[Rob M]

I have an NAD 522 cd player with a dead display. These things have an LCD display backlit by three grain-of-wheat lamps, and it looks like one of them is burned out. Does anyone know anything about these? Any ideas about the right voltage/wattage for a replacement bulb? Thanks!

 

[Leolabs]

Is it really a LCD??Look likes a VFD to me.

 

[Rob M]

Is it really a LCD??Look likes a VFD to me.

Maybe. Would a VFD need to be backlit?

Any idea about the lamps? If you've got one of these there that's working, would you mind measuring the voltage to the bulbs?

 

[josiphal]

Hi Rob M,

Display is LCD with backlight, no VFD. On 5425 shematic lamp is connected between -15V and 0V with 10R 0.5W resistor in series.

Josip

 

[Rob M]

Thank you very much!

 

[miguelovitch.dk]

Movie showing how to fix nad 522 and more

Old question, but decided to answer anyway.

In my electronic workshoop i see this problem with blown bulbs often so:

Check this movie about howto fix backlight faults in nad cd players and recievers as nad 705

http://freemovies.s-educator.org/re...ers_defect_lamp_in_display_stremingvideo.html

http://freemovies.s-educator.org/repair_movies/nad/nad_cdplayers_defect_lamp_in_display_stremingvideo.html


best regards miguelovitch.dk

 

[Mikelo]

Old question, but decided to answer anyway.

In my electronic workshoop i see this problem with blown bulbs often so:

Check this movie about howto fix backlight faults in nad cd players and recievers as nad 705

http://freemovies.s-educator.org/re...ers_defect_lamp_in_display_stremingvideo.html

http://freemovies.s-educator.org/repair_movies/nad/nad_cdplayers_defect_lamp_in_display_stremingvideo.html


best regards miguelovitch.dk

These links don't seem to work anymore and a search of t hat
site doesn't bring results.

Do you show how to replace the bulbs with LEDs?

 

[elx]

These links don't seem to work anymore and a search of t hat
site doesn't bring results.

Do you show how to replace the bulbs with LEDs?

I try these link too but they don't work.
The solution is here

nad cd player

i hope this will help someone

sorry for my english...