Surface Pro 7 Overheating when charging

I know you mentioned the warranty was expired, but I'd try reaching out to Microsoft anyway. Their customer service is actually really good when it comes to Surface products.

My surface pro 7s (i5 256GB and i7 512GB) bottom screen flicker when the device overheat. The problem started to appear right after the expiry of warranty of the two surfaces. This issue has been happening for the past 4 month, but it would only appear once or twice a month for each device. The screen flickering basically disappear once the devices have cooled off after few hours. I'm quite disappointed the the surface pro 7s since i do not have the same problem with surface pro 5 & 6 that my kids are currently using.

My SP7's temp get's to 40 C when idle and just charging. Not talking about intensive jobs.

The reason I am concerned with this is that my SP4 had no issue like this alrhough the CPU might have been less efficient.

I use no case.

So you say this is normal?

Then I am disappointed, as it might decrease the battery life, which is already crappy and Microsoft does not stand behind it. My SP4 had a bulged battery.

Like all computers, it is designed to power itself down in order to prevent permanent damage to the device when it becomes too hot. But temps have to exceed 100C in order for this to happen, which means the device is becoming incredibly hot. I imagine you must be using a 3rd party case to protect the Surface Pro? If this is true, remove it from the case. Most Surface Pro's are passively cooled, meaning there is no system fan to expel excess heat. Instead the Pro is built of magnesium to act as a large heat-sink and draw heat away from the CPU. With a case, the heat has nowhere to escape.

My client Toney Johnson Real Estate is having the same issue. Machine locks up and shuts down. Is there a fix for this?