I woke up thismorning and started the car and turned the head deck on as i normally would, but totally out of the blue the head deck keeps turning itself off and on repeatedly any ideas on what the problem could be ? has this ever happend to anyone before? is the head deck screwed? its an 8yo pioneer deck if that helps.
cheers ,(i need music) :-(

My Sony did this when one of the speaker's wires shorted out. Overload protection, I think. You could pull the head unit and check each pair of speaker wire with a multimeter. If there is a short you know where to look. If the speakers in the back are easy to access, have a look for metal bits attracted by the magnets shorting one of them out.

My parents travel a lot of unsealed roads, and eventually killed an OEM TJ-era Head Unit with similar symptoms...... intermittent power on-off which became more frequent. After checking connection of loom with the unit a few times (which did seem to fix each time, but lasted no time at all) - we finally accepted that maybe we had jolted the poor thiung to death and swapped-in another unit. Which so far survives.... maybe a cracked circuit board or dry solder joint, but swapsies was easier.

My tip: check wires as suggested above (looking for shorts), check the power wire with multimeter (see if power is intermitent, or set itself is causing the issue), Check connection of plug to head-unit, check condition of any cuts/joins in the wiring loom between car and aftermarket head-unit.

i found the problem apparently the four screws used to hold the aircon switches and head deck console in place are used as an earth .
it was missing the bottom left hand screw that i had forgot to replace the day prior i found the screw underneath the change tray (,<such an idiot)

anyways all is well now thank for your help..

i found the problem apparently the four screws used to hold the aircon switches and head deck console in place are used as an earth .
it was missing the bottom left hand screw that i had forgot to replace the day prior i found the screw underneath the change tray (,<such an idiot)

anyways all is well now thank for your help..

It's only an earth if there is a cable attached to one of the screws. if one of the screws was missing and there was no earth lead attached to it before or after i doubt it's an earth as those plates screw into metal tabs in between plastic

yeah i totally understand what you are saying there is plastic between the two metal plates the thread on the screw comes in contact with the rear plate and must earth out there, there was never a wire or anything attached to it before i removed it myself i was surprised when it actually worked, anyone else out there with a third gen willing to undo the bottom two screws and see if it works?

In the 3rd Gens with OEM head-units, the head-unit is earthed through its chassis - ie: onto the mounting brackets behind the plastic fascia panel. No wire involved, the outer casing of the head-unit is screwed (x4) to metal side brackets, and these engage with metal brackets in the dash.

Almost all after-market head-units have a ground wire (often Black) in the loom connection - so for a 3rd Gen Magna/Verada there is no corresponding ground wire in the car loom - you need to take the ground wire in the head-unit loom and find a good earth behind the fascia (a handy screw at top left corner of the "hole" when fascia is out looks approp for this purpose to me).

If securing the audio/climate frame with the fourth mounting screw has worked this time, so be it. If the fault recurrs, I'd be checking for integrity of the loom connector into the socket at back of Head-Unit, also for integrity of any other plug connections (if, for instance, Aerpro adaptors have been used), or any cut wires/joins/solders in gettinhg the car loom connected to your after-market head-unit.

If you think grounding is an issue, the ground wire from your head unit should not connect to the Mitsubishi radio loom at all, because Mitsi does not have an earth wire in the loom for audio.