Today I finally managed to reassamble the PowerBook after applying new thermal paste and pads.
First impression was diappointing since after firing up the little guy temperature of the CPU raised up to 60°C in a few minutes with fan contantly running.
After re-reading the ArcticSilver documentation, it takes 24h to get full function of the thermal-conduction capabilities of the new thermal-paste. So this is something not to worry about.
But the fan had been still running at "low" CPU/GPU" temperatures of 42°C/52°C so I spent some bucks on "G4FanControl" and found out, the temperature-threshold of the mSATA had been the cause for constant fan-activity, since it had been set to a level adapted to mechanical drives.
After changing the threshold for the mSATA-drive, the PB runs silent but on a pretty warm temperature level.

Here's another thread about "heat&fan-activity" https://forums.macrumors.com/threads/12-powerbook-g4-temperatures.1560950/
First impression was diappointing since after firing up the little guy temperature of the CPU raised up to 60°C in a few minutes with fan contantly running.
After re-reading the ArcticSilver documentation, it takes 24h to get full function of the thermal-conduction capabilities of the new thermal-paste. So this is something not to worry about.
But the fan had been still running at "low" CPU/GPU" temperatures of 42°C/52°C so I spent some bucks on "G4FanControl" and found out, the temperature-threshold of the mSATA had been the cause for constant fan-activity, since it had been set to a level adapted to mechanical drives.
After changing the threshold for the mSATA-drive, the PB runs silent but on a pretty warm temperature level.

Here's another thread about "heat&fan-activity" https://forums.macrumors.com/threads/12-powerbook-g4-temperatures.1560950/
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