new laser assembly
https://www.aliexpress.com/i/2251832865505302.html?gatewayAdapt=4itemAdapt
I have purchased about a dozen items from aliexpress, always a great price and successful.
any repair shop or even computer shop can replace the assembly.
They come with a small lump of solder that prevents static damage. upon receipt, that lump of solder needs to be separated, not hard for a repair person. I did it.
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Have you tried one of these?
simple cleaning has solved my friend’s as well as mine a few times