HU 850 Radio CD Player not working.

[S60D5-185]

Help please with the HU 850 Radio cd unit that is fitted to my 2006 Volvo S60.

Yesterday, following torrential rain overnight, without warning the radio would not play.
The display lights up normally, i can flick through the stations, i can select CD and hear it select or change disc if i wish but there is no sound apart from a regular crack through the speakers every 5 seconds or so.

I have a Parrott CK3100 routed through it and this is still behaving normally and will accept a call using the cars speakers as output.

Now for the real fun part, every now and again the radio or cd , if switched on will burst into life at FULL VOLUME and this cannot be turned down. It will play like this for 10 seconds or so and then revert back to the previous description. On other occaissions it just comes on normally , i have full control of the volume etc but again after 10 seconds or so it reverts back.

Thinking that the rain may have been a factor I have lifted the plastic windscreen scuttle cover to see if any water was visible around the CEM but it seems fine.

These exact symptoms have been described by others on here but apart from using a replacement Head Unit no one seems to have identified what the fault is and how to fix it. You would definitely think something had gone amiss with the volume control within the head unit itself and if so surely a competent radio/tv engineer should be able to sort it.

Darryl

[outnumbered]

pull the fuses and see if that sorts the gremlins out there is three as far as i no, meet me for a coffee and i will fetch the majic box.i can do thurs friday but away the weekend
mike

[S60D5-185]

Originally Posted by outnumbered

pull the fuses and see if that sorts the gremlins out there is three as far as i no, meet me for a coffee and i will fetch the majic box.i can do thurs friday but away the weekend
mike

Hi Mike, i will see how i am doing for Thursday or Friday tea and tiffin and give you aring if i can make it.

Tried the fuses and also disconnected the battery for 2 hours this morning.

I will have to think of some catchy tunes to hum if i travel down to Wetherby to meet up

[Marcel]

the fault is either the main board (a connection) or DSP micro.

We can repair the unit for you

Central Services
Volvo radio service
188 Spring Road
Ipswich
Suffolk
IP45NR

01473 725953

Marcel
www.centralservicescaraudio.co.uk

[cjed]

Just a quick question, doesn't the HU-850 need an external amplifier (located under the front passenger seat) ? Also, when fitting the Parrot, I understood it disabled the normal HU-850/Amp speaker system (so it could drive them), is that correct ?

If the answer to either the above is "yes", then I'd be checking the external amplifier, and/or the Parrot speaker switching.

[outnumbered]

the 803 has the amp under the seat but it has not effected mine .good point about the hands free. check ya plugs in the unit and the hands free.
mike

[S60D5-185]

Originally Posted by cjed

Just a quick question, doesn't the HU-850 need an external amplifier (located under the front passenger seat) ? Also, when fitting the Parrot, I understood it disabled the normal HU-850/Amp speaker system (so it could drive them), is that correct ?

If the answer to either the above is "yes", then I'd be checking the external amplifier, and/or the Parrot speaker switching.

Hi, The Parrot unit is still working properly BUT at some point i intend pulling the HU 850 out and disconnecting the Parrot to see if there is a problem there.

This thread

http://www.volvoforums.org.uk/showthread.php?t=144013



is a mirror image of my problem even down to a bluetooth handsfree kit in the equation. The answer was a replacement HU 850

[nono85]

Bonjour à tous,
Je possède une S 60 de décembre 2005, mon chargeur cd a rendu l'âme, je l'ai démonté et quand je l'ai ouvert, malheur il y'avait plusieurs pièces métalliques qui se baladaient. Je recherche donc un "HU 850". Ce n'est pas fini, j'ai un message d'erreur "SRS REPARATION URGENTE" je n'ai pas du respecter l'ordre de déconnection lors du démontage. Comment le "reseter" et un autre message d'erreur que j'ai depuis un bon moment, "GESTION MOTEUR REPARATION DEMANDEE". Elle me met ce message quand je la pousse un peut et je n'ai plus de puissance il faut que je coupe le moteur et que je redémarre. Le message disparaît au bout de quelque jours. Pouvez-vous m'aider ?

Merci d'avance

[RM955I]

Bonjour!

In English, as I understand it you had a broken HU850 where the internals for the CD were broken and you have replaced it. Unfortunately you now have error messages saying that the SRS and also Engine Management system need attention. This is a symptom of not following the required procedure for removing the HU850 and the climate control module and needs to be re-set by either Volvo or someone with the VIDA tool.

The correct procedure (somebody please confirm!) is to turn the ignition off, wait 10 minutes, disconnect the battery and only then to remove the unit.

http://forums.swedespeed.com/showthread.php?128247

[Amazonian Saint]

Originally Posted by S60D5-185

Help please with the HU 850 Radio cd unit that is fitted to my 2006 Volvo S60.

Yesterday, following torrential rain overnight, without warning the radio would not play.
The display lights up normally, i can flick through the stations, i can select CD and hear it select or change disc if i wish but there is no sound apart from a regular crack through the speakers every 5 seconds or so.

I have a Parrott CK3100 routed through it and this is still behaving normally and will accept a call using the cars speakers as output.

Now for the real fun part, every now and again the radio or cd , if switched on will burst into life at FULL VOLUME and this cannot be turned down. It will play like this for 10 seconds or so and then revert back to the previous description. On other occaissions it just comes on normally , i have full control of the volume etc but again after 10 seconds or so it reverts back.

Thinking that the rain may have been a factor I have lifted the plastic windscreen scuttle cover to see if any water was visible around the CEM but it seems fine.

These exact symptoms have been described by others on here but apart from using a replacement Head Unit no one seems to have identified what the fault is and how to fix it. You would definitely think something had gone amiss with the volume control within the head unit itself and if so surely a competent radio/tv engineer should be able to sort it.

Darryl

We have exactly the same problem on our 2005 S60. We are rather bamboozled by the technical solutions and shocked by the cost of replacement at Volvo. Is there any update on how to sort this in a more reasonable manner, cost wise? This is my first post on the forum, so Hi to you all.