[g__day (Matthew)]

After years of really solid performance from my four in use ZWO cameras - rather unsual behaviour from my ZWO 071MC-c Pro camera today; rather than cooling down its showing about 30 degrees above ambient!

I tried running it and my ZWO 1600MM-c side by side to take darks - in SGP couldn't get the 71MC-c Pro to 0 degrees (and its on a huge lab power supply). The ambient was 15 degrees - SGP reported it at 56 Celcius!!!

Then I tried APT - the first run it said it cooled to 0 in 5 mins, the second and it wouldn't get below 44 celcius. I tried TSX controlling the camera too - 44 was the lowest it could get to - about 20 degrees above ambient.


Is this the sign of faulty hardware or dying equipment? It is a few years old now and never given me a problem until today. It's all permanently mounted in my astro lab ánd connected by high quality USB3 cables tthrough a powered, high quality USB3 hub. I have had no gear or software changes for over 6 months and day in and day out this gear has all been rock solid until this afternoon.

The 1600MM-c behaves exactly as expected by all programs - but the 071MC-c seems to be heating rather than cooling. I tried switching off its power supplies - and checked them on a multi-meter and left it off and unplugged for 5 minutes - all brought no joy.


Thoughts / suggestions anyone? I did let TSX get to 80% power - still only got the 71MC-c Pro down to 44 celcius.