What the chuffs happened!

[grasmere59]

I last drove the car on sunday and i had a fully functional MFD,i go out tonight to pop to the shops in the car turn the ignition on and was greeted with this!! What the f###s happened?

[GingerMagic]

What did you buy from the shop, Magnets and Plutonium ????

That is a very sudden demise on an MFD screen..

[grasmere59]

I'm wondering if i have strained the connection at the back or something when i changed it for my old MFD and back again for the pic i took on saturday although it was fine on Sunday,i'm going to take it back out again tomorrow and give the plug a wiggle about and see if that gets it back.

[GingerMagic]

Well, lets hope a little wiggle does the job.

[grasmere59]

Wish i hadn't messed about with changing them around and had left well alone.

[FarmerPug]

The LCD part looks like its leaking round the top

[mjb]

The LCD part looks like its leaking round the top

well spotted!

[Doggy]

I was cursing this afternoon - moved my car a few yards to clean the windscreen, looked down and my display was a mass of missing vertical lines.

Amazingly enough, it's now fully recovered.

That's the second time mine's done this, which makes we think it's a driver rather than a display issue, (at least on mine).

[grasmere59]

Mines not recovered,very slight improvement today in the heat but still crap.

[Sonia406]

Ouch!
Sorry to see this...
Wiggle didn't sort it then?
Wonder what caused that, so sudden?

[FarmerPug]

Back to the bit of research i done on the sat nav displays:

Normally, the Z axis conductive adhesive dries over time, but in case of Peugeot 407 and 607 my experience is that replacing the ribbon and the adhesive does not help. The problem is caused by some sort of short caused by oxides that grow between the plumbum oxide pads / traces. This short overloads the driver IC and makes it malfunction if it heats up.

So I'd say the glass and the cable should both be replaced to get these units fixed properly...

I think when he says plumbum oxide he meant lead oxide, the lead must be corroding in these displays and causing all sorts of problems when they heat up
Possibly a bit of preventitive maintanence on still working sat nav screens is to drill more ventilation holes into the caisng so they can stay cool