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