Fat Ps2 Wont Spin Any Disks

Hello I have a fat ps2 and i took it apart awhile back to clean the console because. I disconnected the power ribbon from under the DVD drive then I just cleaned it up with some compressed air and some cotton swabs without any thing on them.. After I did that i couldn't get the power cable back in under the DVD drive so i disconnected the two ribbon cables from under the DVD drive. After that i plugged the power cable under the DVD drive. but than i released that the ribbon cables were hard to get them back in so i gave up for a few months in the months that the ps2 was taken apart i made sure not to drop it or get dust on it ect. Earlier this week i tried it again and i got the dvd drive plugged in the ribbon cables for under the DVD drive. i went to turn it on everything works but it wont read any disks. what i mean by this is that you can put in any disk ps2 games, ps1 games, movies ect. Not one will spin. I can go into the main ps2 screen were i can go to settings or browser it shows that the DVD drive is there but wont be spin any disks that i put into it. It used to read disks before it apart im pretty sure i didn't break anything because i took apart consoles in the past and they still work. I Googled the problem and look around and i cant find anything thats working i tried cleaning the laser and everything but i dont think its the laser but i could be wrong. all the cables are plugged in. Is there any solutions or should go buy and new spindle ?

I know there is problems like this on the ps2 slim but i cant find any working solutions for the fat ps2. Also the Ps2 has a mod chip in it that was installed by a person years ago.