high tem error 736 degrees

Assembled 2.5 upgrade to my 2S printer. When I powered up to do firmware update, I got an ear piercing whistle and a Hight Temp error. Bed fan was on. Had checked electronic connections multiple time before I closed it up. Shut down printer and FINNALLY found a chat pop up. The tech told me to check connections. Opened the box and did more "multiple" checks of connections. Even used my 2S assembly picture to check other connections. All are OK. Turned the printer on and got same results. Bed fan on, PINDA probe lit and printer whistling. Shut it down again. Went to Forum and saw someone else had same problem. No response to his post as of yet. I am at all stop as to what to do next. Still cannot find how to get the "chat" flag to pop up.

Need to add it to the help/support menu.

Answer this question I have this problem too

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Hi Merrill,

I responded on the forum recently and my advise is the same here, please contact our support at info@prusa3d.com

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Merrill Albury will be eternally grateful.
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