Audi A4 B5 not work

[yarowsc]

Audi A4 B5, 1996year, motor 2.6 petrol. Instrument cluster VDO 8D0919033C, the speedometer and engine speed are not working. in the morning, when the engine is cold, the cluster works properly. warms up and stops the speedometer and engine spped. some "cold solder" on the motherboard? where to look ?

[clauberty]

Connector mcu and around mcu

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[yarowsc]

on the motherboard clean, no cold solder. and the ITT CDVH-E464 processor. I suspect that the propulsion engines will be to blame

[A3fDevil666]

Post Image from pcb Front and back ....

[yarowsc]

PCB pictures attached