TS100 weird temperature readings

[jeanblanchard]

Describe the bug

I'm getting weird standby temperature readings on my TS100, off by 100+°C.

What's event weirder is that the temperature reading varies considerably based on the input voltage (I have a variable output power supply).

In my ~25°C room, I get 120°C with 12V input, and up to 264°C with 24V input.

This is unaffected by calibration, or the installed tip.

Details on your device:

• Device: TS100
• Tips: TS-I, TS-B2, TS-BC2
• Release: 2.15
• Power adapter being used: variable output power brick (JDT-001)

Debug menu output At 12V:

RTip 845
CTip 120
CHan 177
Vin 12.0
PCB 1

At 24V:

RTip 845
CTip 164
CHan 618
VIn 24.0

When Plugged in to USB:

RTip 805
CTip 53
CHan 520
VIn 0.0

Original Firmware The original firmware (V2.18) reports a temperature that is not the most accurate either, but not as crazy, showing something like 42°C to 45°C

[Ralim]

This is interesting, Your in-handle temperature sensor for the cold junction temp is reading rather odd. I wonder if they have swapped components again. Would it be possible for you to remove the back cover and try and take a photo of the pcb inside? (dont remove the pcb). There should be a small black part between the copper pieces that poke up to connect to the tip, and I would like to check (a) its fitted and (b) if its the expected part of if the board design has changed.

Is your unit a miniware official one or a rebrand?

[jeanblanchard]

Hi, sorry for the delay, didn't see your reply.

My TS100 is actually quite old, bought in October 2017. I just wasn't aware of alternative firmwares until recently...

Anyway here is a picture of the pcb

I believe it's an official Miniware, it does have the sticker (and it's probably all there was at the time)

[River-Mochi]

This ticket hasn't been looked at in a while but perhaps try something we do on the Pinecil iron since it uses the same cartridge tips. wipe the white rear end of the cartridge very well with 90%-99% isopropyl alcohol (IPA) - sold at local drugstores for @$2. it's worth a try as it resolved a lot of weird Raw tip values and fluctuating temperatures on Pinecils especially with new cartridge tips (I assume factory oil/residue on them causing dirty poor contact).
This has solved many jumpy temperature issues on Pinecil Irons fwiw.

clean at the +/- but I wipe whole thing.