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Discussion Starter · #1 ·
This is based on the multifunction unit that works in conjunction with your stereo/Radio and CD player screen.


After checking the fuses and they was all ok, i scoured the internet to read that the multi function units are not very reliable and can muck up internally.

So i got the haynes manual out, (disconnect battery negative lead first) Of came the plastic facia that covers the hazard warning light switch and multi function unit display.

Beware though cos in the haynes manual it jus says prise off the facia when in fact you should push the plastic towards the window screen and lift at the same time then the back part of the plastic (nearest window screen) should come undone (lift up) first, then continue to push towards the window screen and then the front part of the plastic will unslot.

Once that was done i unplugged the hazard warning light switch from its plug then put the plastic facia with the hazard light switch to one side to continue to get out the multifunction unit (2 star type screws) as shown in haynes manual.

Next i took the multifunction unit out of its plastic casing by unclipping the 3 plastic clips and unplug.


Now when the unit was out i thought i spotted the problem straight away.

There is a metal plate that runs across the top of the multifunction unit with 4 white round plastic things twisted in the top (lightbulb holders) and roughly in the middle of that metal plate will be a thing bit of metal that has been broken 1 end and bent down.

So i got my friend round who is very good with electricals (fixes tv's, DVD players etc.) and he said no that is meant to be like that and was purposely broken when made (dont know why, french???) cos if that thin bit of metal was reconnected back up it would be positive and negative touching and my dashboard would be in flames in no time at all!!!!

So he further investigated the metal plate on the unit and noticed where the thin bit of broken metal is, there is 2 thin bits of metal that go down into the unit, 1 being positive and 1 being negative.

So he turned the unit upside down and unclipped the green circuit board.

The problem was in there, basically where the two thin bits of metal at the top of the unit go down into the unit they go to a little white plug thingy to feed the circuit board with power, the solder on the *********** plug had came off therfore not feeding the unit (circuit board) with power hence why my unit was totally dead.

So today he took the unit to work and resoldered the little *********** plug back onto the circuit board for me. (get a tv repair bloke to do this for you or someone good with electrics and a solder iron cos if you use a to hot solder iron you will fry your circuit board making the unit useless and you will need a whole new unit basically)

After work we fitted the multifunction unit back into car and she worked straight away.



Now i have made that sound quiet complicated when really it is not, here is in short what you will probably need to do if your multi function unit is totally dead.

Take the unit out of the car, the unit itself is cased in white plastic with another black plastic case on it.

seperate the unit from the black plastic casing by unclipping the 3 plastic clips.

Now your left with just the multifunction unit turn the unit upside down and unclip the circuit board. (the top of the unit has the metal plate running across the top with 4 white round plastic bulb holders screwed in).

Now roughly in the middle of the circuit board you should see a little white plastic plug, That is the power plug and now if the white plastic plug slides off 1 little metal prong (earth prong) then it needs resoldering back on and then should be fixed.

If this does fix your unit then please post in here to let me and other people know really how common this problem is as they seem to use very little solder to solder the plug on (Manufacturing costs??).

The unit itself would get warm when on for quiet long but the fact that the unit is directly above the heater fans that probably doesnt help with the heat neither hence why eventually the solder breaks which is apparently quiet common on most electrics with solder cracking breaking etc. as explained above they probably use minimal amounts of solder for costs.

Hope this helps other people and fixes there multi function units.
 

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Discussion Starter · #2 ·
Also make sure you have your 4 digit radio code as when you disconnect the negative lead from your battery then reconnect after the job is done you will need to enter the 4 digit radio code into the stereo for it to work again.
 

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thanks for your post very helpfull

hi wils35 thanx for ur post helped me out a hell of alot became a memeber to this site just to reply to ur post , i just brought my gti last friday and the multi display didnt work either, so i toook it out took out circuit board and the white plug was knackered just as u had described, so i binned that ha ha i soldered 2 wires to each point on board then connected them to the 2 tracks for bulbs, also of my board there was a micro chip floating round inside the case wen i opened it up, found out where he belonged resoldered him back in place connected back up to my pug and waheeeyy presto it all works great now, thanxs again for ur post it gave me hope lol saved me some coins
 

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Your post has hit the nail on the head. The sall connector you refer had come away from the pcb. Prior to removing the unit I noticed that if I applied downward preessure to the top the unit sprang into life!

I have yet to re-solder the connector to the pcb. I'm giving it a go myself!
Fingers crossed eh!!
 

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Discussion Starter · #6 ·
hurlej02 said:
Your post has hit the nail on the head. The sall connector you refer had come away from the pcb. Prior to removing the unit I noticed that if I applied downward preessure to the top the unit sprang into life!

I have yet to re-solder the connector to the pcb. I'm giving it a go myself!
Fingers crossed eh!!


Hey did you manage to fix this in the end?
 

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Digital display repaired

Hi,

Thanks for the advice. I took the display apart as detailed and found the white connector block as described, The digital display in my 206 GTi first became intermittent, then failed completely - black screen, however after following the insruction here it all seems to be working again. It took about 3 minutes to do the soldering and thirty seconds to put ti all back together again.

Looking closely at it the solder joints under magnifiactation, the joints on the metal legs have failed. They should really be re-soldered back onto the board but the area is tight and it would need to be done professionally. I followed the instructions to carefully increase the amount of solder on each pad. Once re=assembled the dispaly appears to be working fine, I guess the extra the solder on the board provides sufficient height and hence pressure to maintain contact with the connectors. It works, good enough for me!

a
 

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THANK YOU!
I realise you posted these instructions YEARs ago but it has helped me fix my display that has literaly been broken for months! Enourmous thank yous, so chuffed I was able to do it myself and only joined to say thanks, so easy and saved me a fortune!:lol:
 
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