Kenwood DNX6990HD service manual needed

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  • 68pishta
    Member
    • Jan 2012
    • 29
    #61
    Re: Kenwood DNX6990HD service manual needed

    Originally posted by mixmansc
    More possible info here - https://www.badcaps.net/forum/showthread.php?p=935350

    I found a Kenwood updater that is not their normal firmware update. It reloads everything on a few models including the 570HD.
    I need that uploader! can you repost the link? Mine lost a bunch of icons (image not found) and I think a reload would fill in all those pesky "image not found" placeholders. As for the voltage, I was running it off a UPS battery 12.2V and it was very laggy. Im wondering if the 13+ voltage is really needed as it sure works better off a fresh charge than a 11.8V reading. My test batteries are old so they work for about an hour before the thing starts to boot loop at 11.5V. I have a 690 on the way with a no power issue, hope its a reflow fixer or else Ill just harvest the onboard uSD card on the GPS board or even the whole thing. Mine works but the nav is wonky.

      Comment

      • tibimakai
        Badcaps Legend
        • Jan 2012
        • 3680
        • USA
        #62
        Re: Kenwood DNX6990HD service manual needed

        What has to be reflowed?
        I have a 570, that won't boot up anymore, but the fan is running and the red triangular LED is on.

          Comment

          • 68pishta
            Member
            • Jan 2012
            • 29
            #63
            Re: Kenwood DNX6990HD service manual needed

            I understand the GPS card can take a reflow and fix a red power with no display. 240C at 80s to reflow lead free solder.

              Comment

              • tibimakai
                Badcaps Legend
                • Jan 2012
                • 3680
                • USA
                #64
                Re: Kenwood DNX6990HD service manual needed

                Which component has to be reheated?

                  Comment

                  • tibimakai
                    Badcaps Legend
                    • Jan 2012
                    • 3680
                    • USA
                    #65
                    Re: Kenwood DNX6990HD service manual needed

                    OK, I have reflowed the main CPU on the GPS daughterboard, and it came to life. Yeahh!!
                    I have added some thermal pads between the DVD drive and the Aluminum heat sink, to transfer some heat. Hopefully will last longer.

                      Comment

                      • Marlonmo
                        New Member
                        • May 2022
                        • 1
                        • Brasil
                        #66
                        Re: Kenwood DNX6990HD service manual needed

                        Hello, I live in Brazil, I can't find a place to repair my DNN9710BT, that is similar to the DNN991HD.

                        Same Service Manual that I don't have!

                        I't don't start. Only show the red light, turn on a black screen, fan always on and anything I've tryed is working.

                        I't don't power the USB light of my USB Flash Drive , them, I think that it's impossible to reinstal the firmware.

                        Sorry to ask you, but I really need Help.

                        I've just have finished to pay for it.

                          Comment

                          • Cliffton
                            New Member
                            • Jun 2024
                            • 2
                            • United States
                            #67
                            Thought I had lost this service manual but came across it today.
                            Attached Files

                            if you find these attachements useful please consider making a small donation to the site

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