Strange grid on my new ASI071MC PRO's sensor.

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StefanoB60
Posts: 7
Joined: Fri Feb 22, 2019 5:05 pm

Strange grid on my new ASI071MC PRO's sensor.

Post by StefanoB60 » Sat Jun 01, 2019 8:47 am

Hi.
My first tests were with external temp 5-10 C° and sensor temp -10 C° without problems.
Yesterday, with an external temp about 15C° (sensor start about 18C°), when the sensor arrived al -10C° I noted this strange grid on the right side of it. I lowered the temperature slowly: about 15 minutes from +18C°to -10C° (first raw image).

When I returned at 0/-5 C° the grid disappeared (second).


.... but appear again (and terrible) when I lowered the camera again at lower temp (-20C°)! (third image)


What's happen?
Stefano.
Attachments
L_2019_05_31_23_35_18_Bin1x1_180s___10C_RGB_VNG_R.jpg
-10C
L_2019_06_01_00_02_20_Bin1x1_180s___5C_RGB_VNG_R.jpg
-5C
L_2019_06_01_01_27_56_Bin1x1_180s___21C_RGB_VNG_R.jpg
-20C

StefanoB60
Posts: 7
Joined: Fri Feb 22, 2019 5:05 pm

Re: Strange grid on my new ASI071MC PRO's sensor.

Post by StefanoB60 » Sat Jun 01, 2019 9:06 pm

This night I'm trying again. External temp 15C, sensor start temp 19C. I lowered very very slow the temp (a 1 min pause every -2 degrees) until -10C min.
The grid on the sensor appared from -8 C as in my first photo.

The camera has only two months and I paid it 1.700 euros (in Italy)! What should I do? I see that cooler's problems are very frequent with this camera that is very expensive.
I think that ZWO should quickly solve this serious problems and quickly replace defective ones. Because è new camera with this problem is defective, I think. I hope you wont ask my, to open it and try to solve the problem.

StefanoB60
Posts: 7
Joined: Fri Feb 22, 2019 5:05 pm

Re: Strange grid on my new ASI071MC PRO's sensor.

Post by StefanoB60 » Fri Jun 07, 2019 7:55 am

I remain speechless.
This is zwo support' s answer. Now a custom for these, that seem, very common problems (in mine the grid it very strange)

Hi Stefano,
Thanks for your email.
I am sorry for this problem.
You can follow this quick guide and redry the camera.
https://astronomy-imaging-camera.com/ma ... iccant.pdf


Do you suggest me to try solving the problem opening the camera? And If I worsted the problem loosing the warranty?
A camera 3 months old? And the warranty? And the assistance? Where are there? A almost 1800 euros camera!
Mah!

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Sean.Wang
Posts: 713
Joined: Mon Apr 24, 2017 10:08 am

Re: Strange grid on my new ASI071MC PRO's sensor.

Post by Sean.Wang » Mon Jun 10, 2019 10:37 am

Hi there
It's a dew problem on the sensor, sorry about that.
Please send a email to support(at)zwoptical.com, we will help you to solve it.
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StefanoB60
Posts: 7
Joined: Fri Feb 22, 2019 5:05 pm

Re: Strange grid on my new ASI071MC PRO's sensor.

Post by StefanoB60 » Wed Jul 10, 2019 8:13 pm

It is about a month since I sent the my camera to the (italian) Assistance Center by my dealer; I decided because the problems related to the cooling system were evident (difficulty of the sensor to drop in temperature - well below -35 degrees advertised - and systematic frost/dew, even with very gradual cooling). Only yesterday the assistence wrote to dealer that my brand new 071 was returned to the manufacturer for the necessary checks )) -:
After all these setbacks, which force me to be inactive, I at least hope that they don’t take another month and, above all, that this recall (instead of a fair and fast replacement) has been requested to provide a really decisive control and a hardware intervention.

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