Dirty laser pick-up in LG BD390 Blu-ray player

I've had this player for a long time, it's been working for more than 10 years and I only use it as a transport for my CD collection. Until now, the basic cleaning of the laser, ie the lens, would bring it back to life, but now I should clean the laser pick-up from the inside as well. Has anyone tried it? Or should I immediately look for a new laser or replace the entire HL-05P loader if it can still be obtained somewhere? Or buy a used BD390 and get a laser pick-up out of it.
The catch is that I modified the power supply on this player and thus got a better digital output compared to the Rotel RCD951, which I also have as another option.
 

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