2007 Prius Combination Meter - No Odometer/Speedometer after Full Recap

Hello PriusChat experts,

I am seeking guidance on a persistent issue with my 2007 Prius combination meter. I have completed a full capacitor replacement, but the odometer and speedometer remain completely dead. The door-ajar light and other warning lights do work, so the board has power.

1. Symptoms:

· Dead: Speedometer, Odometer/Trip Meter LCD, Gas Gauge, Temperature Gauge.
· Working: Door-ajar light, BRAKE warning, other warning lights. The backlight also works.

2. Work Performed: I have replaced all electrolytic capacitors on the board with high-quality,low-ESR, 105°C rated components.

· Original Values & Replacements Used:
· (1x) 330µF 35V → Replaced with Panasonic EEU-HD1H331 (330µF 50V, HD series)
· (2x) 100µF 50V → Replaced with Nichicon UPM1H101MPD1TD (100µF 50V, UPM series)
· (4x) 22µF 63V → Replaced with Nichicon UPM1J220MED (22µF 63V, UPM series)

3. Diagnostic Steps Taken:

· Pre-replacement testing: All original capacitors were tested out-of-circuit and found to be severely out of spec:
· 330µF cap read ~547 µF
· 100µF caps read ~125 µF and ~562 µF
· 22µF caps read ~28 µF, ~47 µF, and ~74 µF
· Post-replacement: All new capacitors were verified out-of-circuit before installation. Values were correct.
· Soldering: I have inspected all solder joints under magnification. They are shiny, concave, and show good wetting. I have reflowed several joints to ensure there are no cold solder connections.
· Visual Inspection: I have checked for any obvious damaged traces, burnt components, or residual corrosion from the old capacitors. Nothing obvious found.

4. Current Status: After reassembly,the symptoms are unchanged. The working lights function, but the gauges and odometer LCD are completely dead.

5. My Request for Guidance: Given that the recap did not resolve the issue,what should be the next logical diagnostic steps? I am equipped with a multimeter and a soldering iron.

I have attached high-resolution photos of both the top and bottom of the PCB for reference. Thank you in advance!