JVC Heat unit problems!!! help!!! SOS!!!

[chughes163]

Hi,

After 1 day of owning my Cupra R I got impatient and decided to fit my head unit with a friend....

Anyway....all was fine until about 3 today when the buttons would illuminate for a few seconds and then switch off.

Have taken it out this evening and have tried connecting the old unit, and this seems to power up, but the screen will not work/accept a code.

Anyone got any suggestions? The wiring harness doesnt seem to be damaged.

The radio is a JVC AVX33 if this matters at all

Cheers!

 

[Lee M]

Sounds like a loose connection somewhere in the head unit wiring. If power is ok check the wiring digrams that came with your JVC and check if there is a light dimming connecton, could be something to do with that. Also check through your fuses that are associated with your stereo equipment.

I'm no expert though mate i'm sure someone can help you out more.

 

[RobM]

Did you use a wiring harness to fit the new headunit? Although the car uses ISO fitment for the wiring, I've had problems in the past with VAG cars and some specific makes of head unit... Kenwood, mainly, but that's not to say others aren't affected too.

Fitting a wiring harness in there too cured the problem instantly.

 

[Big_daddy]

Ive got the similer tape jvc avx1. i had to swop my the ignition (red) and batery (yellow). as the tape didnt hold its memory and it dosnt off. it just use to cut power off.
The jvc also has a small emergency reset button to help agains malfunction.

 

[chughes163]

Yea, i swapped the ignition and battery cable across and it was all working fine....im very confused! i dont want to take it to a car audio shop as i know their gonna take the p*** on price and make out it was something major, when it wasnt etc.

 

[Big_daddy]

i had few problem with mines, such as the screen goes blank, and the other time, the whole thing went mad! the face just started up and closing. i just press the reset button and it worked.

 

[chughes163]

cool i will check it out - where is the reset button? do you press it with like a pen etc. ?

 

[Big_daddy]

its right on the front, small black dot. poke it with a pen

 

[UncleFester]

Had this problem also, the screen just goes awol and corrupts .. as above, press the reset and all is fine again

 

[chughes163]

thanks for the reply.....yea ive tried that......didnt do anything very confused

 

[Big_daddy]

have you checked the fuses? there one on the back of the tape and another one on the jvc wiring loom.

 

[chughes163]

is that whats in the little box on the wiring loom?

 

[chughes163]

resorted to going to the local car audio place - really helpful guy. Turned out it was a fuse! (im not mechanicially minded...lol) anyway he replaced a load of other fuses too, tested the wiring and gave me advice on how to install it back in - £20 cash, cant grumble.

Thank god it wasnt something more major....i would have been there hours trying myself!

 

[Big_daddy]

Glad its sorted

 

[chughes163]

thanks for all the responses - much appreciated!