Marantz CD 94 /Philips CD 960 display dark
 

Who can help ?

Have this old CD unit with very dark fluorescent tube display. Threre is
still data displayed but very dark and fuzzy.
Maybe display failure is in connection with failure of a nearby placed
illumination bulb for the switches. But this bulb
has nothing to do with the illumination of the display itself. Have
replaced with equivalent because no longer available.
Euras database has this failure in database but as private
collector I have no acess.
Would urgently need repair advice or complete display board if available
from a dead unit. No service for this old unit here
at all. Sevice unit went bankrupt and new company does not even have data
nor advice.

Sorry for bad (austrian) english and many thanks for your advice.

Michael

Hi Michael,
Could be that the filament supply required to illuminate the tube is
low due to a dry electrolytic capacitor or a resistor value gone high.
Trace back from the outer points of the tube (filament points) to the
power supply. If you see an electrolytic capacitor in series with one
of the lines, try blowing some hot air on it. If that makes your
display brighter, replace the capacitor.
Jango

Michael,

My Philips CD 880 had a problem with it's display that was caused by cold or
fractured solder joints on the power supply board. In my case, there were
two connectors from the power transformer where the solder on the pins had
fractured from expansion and contraction due to heat inside the player.
After resoldering all the pins on the connectors, I haven't had any problems
since. In my case, the display would dim or go out completely, and a gentle
tap on the case might bring it back to life.

I'm not familiar with the CD 960, but you may be looking at a bad solder
joint on a connector or power transistor due to the age of the player, since
it came out shortly before my CD 880.

Bob.

Michael,

My Philips CD 880 had a problem with it's display that was caused by cold or
fractured solder joints on the power supply board. In my case, there were
two connectors from the power transformer where the solder on the pins had
fractured from expansion and contraction due to heat inside the player.
After resoldering all the pins on the connectors, I haven't had any problems
since. In my case, the display would dim or go out completely, and a gentle
tap on the case might bring it back to life.

I'm not familiar with the CD 960, but you may be looking at a bad solder
joint on a connector or power transistor due to the age of the player, since
it came out shortly before my CD 880.

Bob.