The headunit in my 2005 RRS has packed up, well it turns on but the volume doesn't work at all when turning the knob or using the steering wheel controls, I was looking at just buying a replacement LR one off eBay but wondered what other options there are to get something a bit more modern, it has the Harmon Kardon system and amp but no nav.

Just a thought but
Have you checked the amp under the drivers seat ?
I had the same issue lately , head unit worked but no sound .
Turned out it was the amp after the wife had spilt water on it

The amp looks ok, on the headunit it's not displaying the volume when you turn the knob up and down so thought if the amp was at fault it would display the volume but there would be no sound?.

It's usually the Amp, but sometimes the head unit.
It's not quite straight forward to change the Amp and keep the nav screen. Needs some interconnects (now available on the web instead of having to make your own up) Bodsys Brake Bible
Software Updates Contact me
RRS Timed Heat/Remote kits - Contact me
BAS Engine Re-maps/ EGR Blank EuIII and EuIV
Clock On The Dash/ SNOTM /3Flash / BT Update /Service Reset/Error Codes read\ Gearbox Reset
See it HERE

Ah, mine is only an SE so doesn't have the nav screen.

HS66 wrote:

the headunit it's not displaying the volume when you turn the knob up and down

Mine also didn't show any input when I turned the dial up or down
The amp showed no physical sign of damage , I tried everything I could think of , until eventually
Borrowing an amp from my workmates car . Twenty minutes swapping them over and everything worked as normal ..... bought new amp and been drowned in sound ever since

Thanks guys, so something could have come loose at the back?, or sounds like it could be the amp?, I'm fine with buying either a new amp or headunit I'd just rather buy the one I actually need!.
How difficult is it to get the headunit out to have a look?, I undid the star panels holding it i

star panels?

you putt of the silver grey strips on the side first. (pull from bottom)

I think its then obvious what is required

Probably amp

Sorry, was typing on phone, I undid the headunit from the facisia that was held in by star type Allen keys but it still didn't want to come out.

you probably need to lift (read pry) away from the climate control panel