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On the original QHY8 there is no temp sensor on the chip so it is not possible to have a feedback loop thus the user being able to set the level of cooling is a waste of time. The sony chip when cooled was deemed clean enough to not require darks so they didn't bother with temp control and taking good darks is where you need this level of control particularly on the kodak chips. From memory the peltier is set to run at 80% capacity to prevent damage to the cooling unit. In MaximDL only camera's that have temp sensors are given the option to set cooling levels in the software. Basically the TEC on the old QHY8 is either off or running flatout (80%). Changing the TEC controller box will not help here as you need a sensor on the chip to make it work. Its not a problem in any case as the subs are pretty clean straight of the camera.
Mark
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