I'm sort-of wondering if the compressor is OK.
I see that there are two LEDs on the board, "DL1" (green) and "DL2" (yellow). What do those normally indicate, and what do they show when the fridge is misbehaving?
Uncle Google suggests that the green one might simply indicate that the power is on, in which case you'd expect it to be on steady, not flickering or dim. As for the yellow one, well. who knows, perhaps that means "too darn hot" (and compressor should be running) but still not having the fridge model number makes it hard for us.
Floobydust deserves an award for figuring out that the larger triac is a BT137 - I certainly can't read that in your photo (nor in any other photo I could find). I get tantalisingly close to be able to read the markings on U1, but no cigar there either. Clear photos of both sides of the board please.