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Like many others, I have become increasingly frustrated at the way the IOVOX unit in my facelift 75 keeps forgetting things. Here is how I fixed it.

I have altered the wiring on the feeds to the head unit, so that it is powered continuously. So far, it has not lost its settings! This could be a cheap fix for any owner who does not want to go through the drama of a replacement head unit/cd changer. It introduces the requirement to manually turn off the radio – not a big deal in my view, and some may consider it an improvement.

I cut the two feed wires a few centimetres from the head unit itself, inserted a 6 amp diode on each, then connected the two feeds together on the radio side of the diodes:

Diodes


Un-switched Feed O--------->|-o------------O to Head Unit (Purple/Pink)
|
| (Link the two on H/U side of diodes)
|




Switched Feed O------------>|-o------------O to Head Unit (Light Green/White)


I suspect that this is over complicated. I did it this way to ensure the total current used by the radio was spread between the two fuses that currently supply it. The diodes are to prevent any crossover between the two feeds. It could be argued that only one diode is required, on the switched feed, to prevent the un-switched feed powering ‘backwards’ up the switched feed.

However, given that the un-switched feed has a 15 amp fuse, I suspect that the un-switched feed is well capable of providing all the current needed. In which case, the fix is simply cutting the Light Green/White wire, and connecting the head unit end of it to the Purple/Pink feed.
 

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So - has anyone tried this successfully? (Or anything else apart from skipping the old unit!)

I'm quite happy with the HU apart from its tendency to lose its settings and require the code to be entered every other day!

See also same poster's thread below in the ICE forum - some discussion but no independent endorsement in terms of success. This poster also seems to have disappeared off the radar after 3 posts.........


http://forums.mg-rover.org/showthread.php?t=126611
 

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Bump!

Anyone else tried this?

I have a misbehaving Iovox CD Mp3 HU and the dealer's audio specialist is now suggesting something along these lines this as a fix.

Problem is that it keeps losing its presets and code, they've reset the code twice already but to no avail. The symptoms do point to it somehow losing its power feed temporarily - possibly to do with turning on the ignition.

Thanks.
 
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