Hello, I've read on the forum that you have successfully repaired a few kenwood navigation CD players. I have a dnx890hd that works perfect except for the navigation. 9-10 times I get a white screen or the screen just glitches. I've bought the 2020 maps, got the software to run once it worked for about 5 minutes then just freezes or goes white. Any advice you could give me?

Re: Kenwood DNX570HD No boot Red Triangle Lit - Characteristic Fault?

Yeah on both that sounds like the main system is corrupted. There is a way to reprogram them but ONLY if you can get ahold of the correct and specific files that it needs. The internal daughterboard has a connector that can be used for USB debugging and firmware loading via Telechips FWDN utility. You have to remove the disc drive, tie a USB cable into three pins, then short a couple of pads while powering it up and it will show up in Windows Device Manager (also need the FWDN drivers and it only works on Windows...

Re: Kenwood DNX6990HD service manual needed

More possible info here - [url]https://www.badcaps.net/forum/showthread.php?p=935350[/url]

I found a Kenwood updater that is not their normal firmware update. It reloads everything on a few models including the 570HD.Re: Kenwood DNX6990HD service manual...ing the 570HD.Re: Kenwood DNX6990HD

Re: Kenwood DNX570HD No boot Red Triangle Lit - Characteristic Fault?

I've seen over a dozen Kenwoods with the same issue. It seems to affect multiple double din models and years from the DNN and DNX 4 digit models to the newer 3 digit models. Right now I have at least 4 of them sitting on a shelf hoping I can find a fix.

A separate issue is the nav software gets corrupted on them and will cause a blank screen or a garbled screen if nav is selected. I can fix that - there is a micro-sd card inside the unit. Has a funky partition scheme but I can copy it. You can also...

Re: New Members - please post your introductions here

Hi All-

Hobbyist electronics tech and found this site on a search. Looks like a great resource and hope to be able to contribute some in the long run. Have recapped many a device over the years as well as tons of other repairs.