The CPU (processor) running hot after a long(er) period is nothing new on PCs or laptops.
And since the HDR-1100s also has a CPU, I was not surprised at it running hot as well.
Solution: refresh the thermal paste between CPU and heatsink.
To do that, just remove 1 screw and push 5 clamps aside
To fully see how HDR-1100s can be opened, watch this: https://www.youtube.com/watch?v=Nlt2Ap3bT-A
Once the top is off, remove the 3 screws from the black heatsink
Wiggle it a bit, lift it up, turn it over and put it aside
You can now see the CPU with the dried-up thermal paste
Use a lint-free cloth and rubbing alcohol (or better: Isopropyl-Alcohol 91%) to clean off the dried-up thermal paste
Apply a decent thermal paste (such as Noctua NT-H1 or Arctic MX-4).
You only need paste in the size of about 1-2 rice-corns.
Spread that evenly on the top of the CPU, using e.g. a credit card
Put the heatsink back on with the 3 screws.
Put the top back on and press on all corners until you have heard all the ‘clicks’.
Put the screw back in on the back-panel.
That’s it.
The heart of the HDR-1100s is a Broadcom BMC7356, 1300 MHz dual-core CPU.
In earlier units, they used the older Radial electrolytic capacitors, in the HDR-1100s they use newer SMD electrolytic capacitors on the motherboard
Should you ever need to replace them, they are available e.g. here: (no connection!)
https://www.switchelectronics.co.uk in Hull.
These are the (SMD-)ones used:
2 each: 220uF 16V SMD Electrolytic Capacitor, Ref Code: 353040
1 each: 100uF 25V SMD Electrolytic Capacitor, Ref Code: 481491
