unboosted

Hello guys.

I've got a new issue with my LS.
My gauge cluster doesn't seem to want to power on anymore. Indicators, high beam and ABS lights seem to work, everything else is off, the little screen too.
I've gone through all of the fuses by the pedals, and engine bay with a dmm, all beep with pretty much 0 ohms.

Has anyone got any ideas? Worst comes to wost, speed, rpm and temp I can do something with arduinos. Fuel level, and mileage for the odometer is my main concern...

Thanks in advanced.

Yamae

Sounds like the power supply circuit in the cluster is not working. As far as I have experienced, I haven't encountered your type of failure and I can't give you an exact idea.

Except the no movement of the speedometer or tachometer needles, cluster's failures I have experienced were mostly related to the CCFL drive circuit which only affected to backlightings.

I once have posted here my cluster's main board which is for a 98 Celsior. The capacitor indicated by a blue arrow was not fully OK but still functioning. As you see the capacitor's top, the brown tube was shrank too much. This must be caused by the heat from the heat sink for the 5V regulator. A 98 USDM LS400 has a bit different main board like this but the photo is not taken well. You'd better to check that the 5V regulator is working OK at least for the first step.