radio dash display back light

[piglet]

HELP - had the top off doing the heater resistor on completion of the job the radio dash display light no longer works - any ideas ?? , had anyone else had the same problem

[gazza82]

Do you mean the multifunction display unit centre top of dash?

[piglet]

yes thats it

[gazza82]

You have plugged it back in properly and locked the plug down? They it's you've disturbed the bulb holders, the bulbs have failed or in moving it you may have broken one or more of the pins that join the two circuit boards to one another inside. The latter are soldered on and the joints dry and come away.

[piglet]

it was only the cover we removed (central locking hazard light switch) in order to gain access to the heater fan resistor (this didnt work so replaced cover)

[tenpole]

Is the display working but no illumination. Or everythin blank!?

[gazza82]

Still think you have dislodged something. Take cover off and press on connection plug and then three bulb holders one-by-one.

[piglet]

Is the display working but no illumination. Or everythin blank!?

yes the display is working but not illuminated, have checked all the connections and made sure the bulbs are in tight

[piglet]

Still think you have dislodged something. Take cover off and press on connection plug and then three bulb holders one-by-one.

Have done this and still not illuminated,

[tenpole]

Then it looks like a case of studying wiring diagrams and tracing back to where you have a fault. You will need a multi meter

[Slo]

The bulb has probably popped with vibration of the top being took off they are really fragile inside

[tenpole]

They are the small capless type t5. I think there are three. They just pull out, but I had assumed you had checked the bulbs.

[leegsi]

If they are old they will blow very easy and just knocking the display can finish them off

[gazza82]

The solder joints inside also get dry and fail easily .. I had a replacement MFD sent via post and well protected in bubble-wrap .. it was working fine in the original car but won't in ours .. the solder let go just in the post!

[piglet]

Hi all ive replaced all the bulbs in the radio dash and all works now YIPEEE, now when starting the car its coming up automatic door locks, passenger airbag fault and engine management fault ARGH !!!!!!!