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This is a Head Unit for a car, which has a common problem of the screen going blank with red triangle still lit.

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Red triangle lights up, screen still black

I recently bought a Kenwood DDX419, to fix, as it was broken, and now I'm asking how to fix it, particularly, the solid red light.

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Did some testing, it was the LV5680 voltage regulator

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Hi @anchefixes

As it is unknown what you have tried so far, have you ensured that there are two 12V DC power feeds appropriately connected to the unit?

Did you try resetting the unit by pressing the reset button?

Here's the service manual that may help.

It has the schematics so perhaps the best place to start is by checking that all the power rails in the unit are OK when it is turned on.

Also a close visual inspection of the main board and sub board may also give a clue especially if any components seem obviously damaged.

Hopefully a start.

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Anchevauls Walker 将永远感激不已
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