Question PS2 problem after replacing the optical drive assembly ?

[cloudff7ps1]

I replaced the new aliexpress optical drive assembly on my PS2 Slim 90000, removed the solder from the optical reader and turned on the console, but only sometimes does the game on the DVD work. Many times the game is not read. When the game starts, after 20-30 minutes the game stops loading. What is the problem?

 

[helpstar]

maybe faulty device or soldering not well done

View: https://m.youtube.com/watch?v=GL_ZdAfHVE0

 

[cloudff7ps1]

i use ps2 slim 90000 what best adjust good performance good life of optical unit?