#Radio screen lights up no sound tv

Thanks for the ebay links and your offer Ted, I'm from Melbourne Australia and will try to source a 4:3 replacement unit if you think this is the culprit.

I am happy to stick with my old 4:3 as I'm not fussed with navigation (usually use my google map on my iphone nowadays), I just wanted to get my radio working again!

#Radio screen lights up no sound tv

My E38 is not equipped with navigation and only have an old analogue TV tuner, are you saying 16:9 won't work on my vehicle unless I've upgraded the Navi? I've left the TV tuner unplugged when I tested the C23 and the DSP amplifier with my old 16:9, would it cause an issue?

I do have a spare 16:9 screen from my old E39, I swapped the old 4:3 the other day and unfortunately still could not power up. TedYes my instrument cluster is operating perfectly, no issues at all. The 4:3 is in charge of sending the message to the radio that it should turn on (it does so over the I/K-Bus). Great! Since KL-R is active, and your cluster is operating normally (right?), my assumption is that the 4:3 died. The C23 will work with these components, but I would suggest grabbing a Siemens CID radio from an E8x and following Frankie's guide on shoe-horning that into the E38 ( ) I do have a spare MKIII that I can sell for $60 if you're interested. I couldn't find any stellar deals on a MKIII or MKIV Navi. Here's the best deals I could find on a 16:9 I recommend upgrading to the 16:9, but that would also require that you replace the TV Tuner with a real Nav computer (I'm 99% sure the OG video modules can't handle 16:9) - might as well go to the MKIV. ! Since KL-R is active, and your cluster is operating normally (right?), my assumption is that the 4:3 died. I checked the voltage at the purple/white stripe wire on the radio connector with my multimeter, it was showing 12.57v (because the car is currently on tickle charger) I have also plugged in to my scanner, it is showing the radio working but currently switched off. I've left the x322 connector plugged in unfortunately still no signal to the Navi (the 4:3 monitor screen) other than the DSP running in the background. I have already unplugged pretty much everything including the x400 connector for the phone. TedThanks for getting back to me quickly. Last edited by t3ddftw 01-03-2021 at 02:24 PM.Ĭan you possibly get a multimeter and check voltage at the purple/white stripe wire on the radio connector? It needs to be 12v. Maybe the cluster isn't realizing that the key is in and sending the I/K-Bus message for ignition as well? If you PM me, I can let you borrow one of my BlueBus modules for testing this hypothesis. This leads me to believe that the I/K-Bus is probably fine and there's possibly an issue with KL-R at the connector end of the radio.ĮDIT: My hypothesis doesn't account for the Navi not booting, though. If KL-R is not active (12v), then the radio does NOT respond to the On/Off commands If the I/K-Bus is pulled to ground, then the Navi doesn't even attempt to boot and the monitor stays pitch black.ģ. The Radio responds to the On/Off commands as long as KL-R is active, even if the Navi is off.Ģ. I just did some testing with my bench components and found the following:ġ.

I'll take out the front seat and pull the carpet to check out the fuse block then.Can you possibly get a multimeter and check voltage at the purple/white stripe wire on the radio connector? It needs to be 12v. I didn't have any other issues with the LCM module, all lights, hazard lights, turn signals, instrument cluster are working fine - just no signal from i-bus for the onboard monitor, radio, MID etc. Ok I'll check the x939 connector, is it located in the glovebox (for RHD)? I have a spare 16:9 screen display swapped it with the original 4:3 screen, didn't solve the issue neither. I swapped my old C23 radio tuner to an old BMW headunit, power is going through the unit and I can hear the DSP is running however cannot hear any sound as I suspect the i-bus is not feeding signal at all. I have checked the K3 and X57 in the LH side of luggage compartment with my fuse test light - all working fine. I have already disconnected the following: