Due to the battery being flat and recharged the head unit wont work properly taken it out,and it did work untill i fully put the cage and unit ack in now its not workin again,i have repeated the process but nothing this time all that happens is the volume button light up and work and the prev/skip buttons light up but when pressed all they do is eject or insert the cd. this head unit is NOT stolen ,and has been in my vehicle for so long and has ALWAYS worked and have never had a problem with this very good unit........untill now...and since it has been so long since i have purchased it cant find any of the paperwork.....have looked online from dodgy people who claim the earth for a fiver,to people who can unlock it if i send it away for upto 35 quid neither of which i am very interested in but the later says this is the only way due to the jvc s security is this true? please get back to me asap as driving around with a nice head unit(athough somewhat old now,but still sounds great,dont want to replace it with cheaper alternative if possible!) that doesnt work properly iis sole destroying!know what i mean? jim...... email@example.com many thanx.....solve this and deserve GOD like status!!
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Try disconnecting your battery, reconnecting it, and resetting your stereo. If that doesn't work, the constant power (yellow wire) or ignition wire (red wire) may have come in contact with ground or isn't properly connected. Make sure everything is connected properly and try resetting your stereo. If it is still flashing "protect", the unit needs servicing Contact JVC Customer Care Center at: 800-252-5722.
Please look out for any error on the cd mechanism, the transport and drive. if dirt is found please clean carrefully. also wipe off any dirt using a reccommended wipe off the optical head.(Lens). there after check if the cd you are using had been warped or worn out, if so test with a good one. Look out when the fault errorr comes in if there is any indication of poweer interupption ,like when some other device or engine is started if so check the ground and positive supply. Please check if the eject key is depressed or if the button
is pressed on by accident due to any external pressure. I hope this helps. Good day
I had the same problem, it occurred after my battery had run flat. To
fix it you need to reset the unit. To do this, remove the clip-off
fascia, and on the main body of the unit there small hole, just to the
left of the connector. Push a narrow pointed object such as a pen nib
into this hold until you feel the click. The unit is now reset and
should be working properly. You'll have to retune your saved radio
stations, but the cd player should now be working.
if you have had the head unit for long, it might be over heating and going into safe mode so it doesn't get to hot. This happened to my amp and i never did anything until it stopped working all together. so my guess would be just to get another head unit or get some type of cooling system.
Your radio probably needs a constant live to retain the radio settings. It may be that your radio has 2 live wires. 1 live that operates the radio coming from the ignition and 1 coming from a constant live that just gives enough power to retain the memory settings.
If you are going long periods of not using the MGB I would disconnect the battery to stop the it draining. If your battery goes completely flat it will damage the battery
Make sure the red wire is still connected or make sure the red wire
hasn't been severed. Also, check the fuses located in the engine
compartment. The red wire connects accessory terminal in the fuse
block. Also check the fuses in the cabin. This fuse box is typically
located on the driver's side, at knee level, next to the door panel,
and underneath the dashboard. As a last resort, the unit can be taken
to an authorized or factory service center.