Change meter bulbs in Onkyo M-504 - Onkyo Audio Players & Recorders

Hi Wayne, the unit would have to be taken to an authorized service center for repair. You can locate an authorized service center at the following link, http://www.onkyousa.com/Support/servicecenterLocator.php?source=globalnav, Thanks, JT

if you have a replacement meter bulb and solder skills , the bulb is in the side of the meter attached inside a rubber grommet.

First you have to remove the combination meter set ( Odometer and RPM meter plus the temperature and fuel gauges) from the dash board by unscrewing 3 or 4 screws. Bend you head down and look above your meter set, you will see the screws holding the meters. Pull out the meter set and unplug the cables behind the meters. The bulbs are there. Remove the bulbs by turning the holder and replace the faulty bulb/s accordingly.

Amplifier section to left side, as well as connection to wire going to left side speakers,and speakers itself shoud check for damage/

How to change my Gigaset 504 Agu wirless password

You can´t swap the internal hard drive if your current firmware is superior to v1.4.0, because system locks it during bootloading (system reads hard drive ID).

if you have cahnged the fuse try and change the bulb also

Chances are they are LED. Check with Radio Shack or online you can check www.1000bulbs.com Hope this helps

Batteries and Bulbs.