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CM5908 Light Bulbs?

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    CM5908 Light Bulbs?

    I took the volume/scan knob PCB out of my radio to clean in isopropyl. While it was out, I noticed that the illumination bulb was a little crusty/burnt. As I was scraping it, one of the leads broke.

    Does anyone have a technical manual for this radio? Are these the correct bulbs?
    https://www.germanaudiotech.com/prod...-back-lighting
    sigpic
    1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
    1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
    1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED]

    #2
    Did you ever go about replacing the bulbs? How’d it go? About to do it myself to a CM5908.

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      #3
      These bulbs are much smaller than the bulb behind the volume knob. I believe the bulbs I ordered are for back lighting the LCD and the buttons. I still used one of these bulbs for the volume knob, but it's definitely not the same as the factory bulb.
      sigpic
      1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
      1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
      1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED]

      Comment


        #4
        How was desoldering and resoldering? The solder joints for the bulbs look super small, I tried removing one but couldn’t get all the solder joint off and I was beginning to worry I was going to fry the board if I heated any more.

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          #5
          Can you take a picture? What tools are you using? At the very least you will need a solder sucker and probably solder wick braid to get the old solder off.

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