Question about Cobra 29 LTD CB Radio

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I have a non-lighting Cobra 29 NW face plate, or EL Driver problem . EL Driver is the small metal box mounted inside, to the side, of the the Cobra 29 near the channel selector control . Can anyone tell me where I might obtain a Schematic for the EL Driver . The scielded lead that supplies the ribbon for the face plate seems to have odd voltage, 50v, and some AC, too . I tracked it back to a diode feeding the small IC on the back of the EL Driver . The power feeding the EL Driver, from side mounted transistor, seems okay, 4v-5v . All other leds are acting normally, and controled by the dimmer pot . Besides the schematic, I may need know where to buy a driver, or parts . Is there a test for the face plate ? What voltage is normal for the face plate . Any idea what the parts cost ? Any help will be appreciated on this challenge, Thanks, J

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  • Anonymous Dec 06, 2009

    Okay, the El Driver / Inverter tests good(57 - 92 VAC depending on Dimmer position).
    Do I just peel off the old face lighted layer, and the new one will be self-sticking ? I see that the ribbon conductor just slips into the small black bracket connector from a slot near the meter . Seems too easy, wonder what the lighted face will cost ?

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That is a power inverter. dc to ac inverter. 13-14volts to 40+ volts ac. to run the el display.. if the display is pulled away from the face like the glue is coming loose that indicates the el display is burnt and will not work unless replace the face plate the el face.. you should have 45volts AC on the two wires feeding into the main chassis face to the el display.

Posted on Dec 04, 2009

Testimonial: "Now that I know the EL Driver is an inverter, I have reached that "Ah Ha" moment . Most repair shops won't touch this job, You're good, a true Expert!"

  • AnyMHz.com
    AnyMHz.com Dec 07, 2009

    believe they are. would have to call cobra tech support to order one. think its cobraelec.com then goto there contact page. normally a plugn play repair.

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