model s75388 kg9

serial 63640090

prod no 925033250-00

stoped freezing and temperature is at +2 (set at -18), fridge at +4. It seems to be constantly working with noise louder than normal. I unplugged for an hour, but still the same after half a day.

Appreciate any comments

⟐ Edited December 19, 2023 at 6:49 MST

Can I repair the original integrated thermometer as this has an alarm (which I had to disconnect) and a red warning led (which is continuously on). The thermometer module also has a lit green LED to show power is on.

Curiously, after a (manual) defrost, two of the green temperature led's do light up on cooling down, but then go off again!

Thanks Jayeff. The compressor does not run all the time, ie the thermostat seems to be working well, it's only the temperature display that's the problem.

My temperature board (Ispracontrol's 08035019) is very similar to the one you found but not exactly the same.

The board shows no burnt-out components, no trace corrosion, no bulging caps, no heat discolouration, no cracked solder. Without a circuit diagram not really sure want to test, other than testing the discrete components.

Shows images of my malfunctioning temperature control board.

⟐ Edited December 19, 2023 at 6:49 MST