70 cutlass stereo doesn't work after battery change?
#1
70 cutlass stereo doesn't work after battery change?
Changed battery to an AC Delco in a 70 Cutlass (350 Gold Rocket engine) and now the Stereo system won't turn on. The stereo is a JVC KD-S790 and all the fuses have been replaced with new ones. So whats going on and how do I fix it?
Thanks!
Thanks!
#3
Were there any wires connected right to the battery that were not reconnected?
If you accidently connected the + and - backwards, even for a split second, the logic circuitry in the radio could have been destroyed.
Those are all I could think of...
If you accidently connected the + and - backwards, even for a split second, the logic circuitry in the radio could have been destroyed.
Those are all I could think of...
#4
I'd vote for the un-noticed moved wire as well.
Either that or the radio has some sort of an initial-start mode that requires holding the on-off button down for a long time, or something similar.
- Eric
#5
This thing did not require a code did it?
#6
That is, if that's his problem...
Still betting on a loose or misplaced wire .
- Eric
#7
Once the diodes opened, the logic ciruitry often toasted.
However, i am hoping that polarity was never reversed int he OP's case.
#8
Ah. You're talking about a diode placed so as to allow an essentially unresisted flow when connected with polarity reversed, in the apparent hope that the current thus flowing through the diode, and bypassing the rest of the circuit, would be enough to blow the fuse and save the radio. If diode goes before fuse, then circuit is subjected to full voltage (and potentially full current up to the value of the fuse), which, as Egon Spengler said in Ghostbusters "... would be bad."
- Eric
- Eric
#10
Did you install this radio yourself or did the stereo dealer install it?
Right now I'm thinking the unit is code-protected for theft deterrence and you will have to re-enter that code before it will work. The code and programming procedure should be in the stereo's owner's manual. Most code-protected units are set to go dead if power is interrupted to them.
If you don't have the code, you will have to jump thru hoops to get it. It would be simpler to to trash the thing and get a new one.
Right now I'm thinking the unit is code-protected for theft deterrence and you will have to re-enter that code before it will work. The code and programming procedure should be in the stereo's owner's manual. Most code-protected units are set to go dead if power is interrupted to them.
If you don't have the code, you will have to jump thru hoops to get it. It would be simpler to to trash the thing and get a new one.
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