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VHF Spectra will not power up?
Posted: Sat Dec 30, 2006 8:01 pm
by flynsqad
I am a newbie with a question regarding a dash mount vhf spectra I just picked up on ebay. Hooked everything up in a 2006 chevy tahoe, but when I power it up, nothing happens. I have found some great info here on batwing labs and am very interested in learning all I can about motorola mobiles for future purchases...please point me in the right direction...Thank You!!!

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spectra power
Posted: Sat Dec 30, 2006 8:05 pm
by txshooter
First thing.
Make sure you have power to the accessory connector and that it is plugged into the radio. Probably the most common newbie mistake.
spectra power
Posted: Sat Dec 30, 2006 8:16 pm
by flynsqad

That's it!!!! Thank You TX shooter
Posted: Sun Dec 31, 2006 7:42 pm
by AEC
I'm happy that was the only problem, if not, I would have mentioned replacing the fuse on the faceplate, which will prevent power up if blown.
It's a 4 Amp rated cylindrical type with a white body-probably ceramic.
Posted: Sun Dec 31, 2006 9:49 pm
by jackhackett
AEC wrote:I'm happy that was the only problem, if not, I would have mentioned replacing the fuse on the faceplate, which will prevent power up if blown.
It's a 4 Amp rated cylindrical type with a white body-probably ceramic.
Where exactly is this fuse at?
Posted: Sun Dec 31, 2006 10:17 pm
by AEC
Jackhackett:
It's on the board side of the front panel on the L/P spectra.
Looking at the faceplate from the rear, the pins are at the bottom and the fuse is on the lower right side of the board, near the outer edge.
I don't have one opened up here so I am going on memory.
It's about 1/8" diameter and just about 1/4" long as well, with 'silver' caps for solder adhesion.
Posted: Tue Jan 02, 2007 6:10 am
by jackhackett
The part you're describing is the 4Mhz crystal for the micro, replace that with a 4A fuse and I think you're going to have a dead control head

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The only fuse I know of in a dash mount Spectra is at the front of the command board, it's a green 7A picofuse which supplies power to the audio IC among other things.
Posted: Wed Jan 03, 2007 7:47 pm
by diggs59
You beat me to it Jack. Can't count the number of 'fuses' I replaced with the proper part on those control heads.. Sure looks like a fuse, and ohms out just like a bad one. Good info.
Brings back memories.
