Kenwood DNX6990HD service manual needed

[68pishta]

Re: Kenwood DNX6990HD service manual needed

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.

[tibimakai]

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.

[68pishta]

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.

[tibimakai]

Re: Kenwood DNX6990HD service manual needed

Which component has to be reheated?

[tibimakai]

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.

[Marlonmo]

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.

[Cliffton]

Thought I had lost this service manual but came across it today.