QuestionThanks a lot, it looks like i am going to have to get the code from alpine. What is a bench test by the way?
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The text above is a follow-up to ...
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Now if i didnt have the anti theft code, would i have to call alpine to get it? Oh and i did check if i had power running through the lines and it showed they did, so i am going to take all the power away from the stereo for 30 minutes and then put it back together and see what happens. Thanks a lot.
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I have a 1984 porsche 944 and i have an after market stereo installed in it. It is an alpine. I am installing 1 ten inch audiobahn sub in it and i had everything working. I was showing some people so i turned up the sound and the whole stereo shut off not just the sub and amp. Everything. I cant get it to turn back on. I have checked all possible fuses, the one in the amp, stereo, the fuse from the battery powerline and the car fuse for the stereo. They were all fine. I just cant figure out what could be causing this power lapse. Any ideas?
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You have undoubtedly lost power to the system. Do you have a vom and know how to use it?
If not, the little VOM at Walmart tool section for $9.83 is a good one for automobile use. With it you can trace the 12v from the battery on down to the system and through the ignition.
There are at least two, maybe three, 12v lines going to the entertainment system. One is always ON power that goes to the head unit and the amps. The other goes to the ignition, then to the head unit and is the TURN-ON line. Then, there is a line going from the head unit to the amp and sub amp that switches them ON. You must make sure they are all getting power.
I suspect you really have a fuse that went, but it looks okey. Sometimes they will actually measure good with an ohmmeter/vom, but when in the system go open. It is possible, also, that a line has an intermittent open at one of the junction points and is not letting power through.
So, you will have to do a little testing to find out what is going on.
If it sounds too technical or difficult, take it into a reputable shop; they can track it down in a matter of minutes. BUT: it will, obviously, cost some bucks to get it repaired if something has failed.
Finally, you may need to do a hard reset. Some Alpines have a non-interruptable power down when it is overpowered and the only way to get it up and running again is to totally release power from the unit for 30 minutes before firing it up again. Do this and you will be okey, but if the unit has the anti-theft system make sure you have the restoration code or you will not be able to turn it on again. It is very difficult to get the code if you have lost it and you cannot start it up again without it - that is why they call it anti-theft!
Hope this is not confusing.... Let me know if you need more help or ideas.
Cleggsan
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Check the manual. Owners usually write the security code on the manual or inside somewhere. It is extremely difficult to obtain if lost. Otherwise, it is not a very good security system. You may have to go back to Porsche to obtain it; (to Alpine if it is an aftermarket unit) there are hurdles to prove your ownership and a fee to get it.
THAT IS: If the set has the security code system built into the unit. Most recent Alpines do.
If the reset does not restore it, you may have to pull the head unit and bench test it.
Cleggsan
AnswerBench testing means to bring the set out of the car and test it completely independent of the automobile. This can be done by running long leads from the battery to the unit and hooking up the output of the unit to independent amp/speakers.
If it works as it should outside the auto, then you know the set is good.
Cleggsan
