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My good old BD-RE BU40N is now ejecting everything within a few seconds. No Error, nothing. Just a few click clacks and boom, ejected. No message on MakeMKV.
Here are the details from the drive:

Drive Information
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: FR07
Serial number: 803HS013801
Firmware date: 2118-01-22 15:36
Bus encryption flags: 1F
Highest AACS version: 81

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 0.FR07J
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

No disc inserted

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How to tell if it has been bricked? It ejects 4k and BD discs.
I have another Drive. Pioneer BDR-UD04, that runs everything fine so far what the BU40N spits out.

Clean the laser lens. If that doesn't help I assumpe it's a door stop now.

Coopervid wrote: ↑

Thu Feb 22, 2024 4:49 pm

Clean the laser lens. If that doesn't help I assumpe it's a door stop now.

How to clean that?! Never touched anything inside it :O

Pop out the tray. You should see now little glas lenses approx. 2-3 mm in diameter. Use a cotton swab and some alcohol. Wipe them dry with another cotton swab. Try the disc. There are two lenses and 2 lasers in the drive. One for CD /DVD the other for BD. If the drive still reads CDs and DVDs the laser for BDs is defective.

Coopervid wrote: ↑

Thu Feb 22, 2024 5:28 pm

Pop out the tray. You should see now little glas lenses approx. 2-3 mm in diameter. Use a cotton swab and some alcohol. Wipe them dry with another cotton swab. Try the disc. There are two lenses and 2 lasers in the drive. One for CD /DVD the other for BD. If the drive still reads CDs and DVDs the laser for BDs is defective.

I will try! Thanks!
Any way to verify if its bricked with software?

No.

Try reading a CD and DVD. If it works the red laser is OK.
Try reading a BD. If it doesn't work the blue laser is dead.

Coopervid wrote: ↑

Thu Feb 22, 2024 5:45 pm

No.

Try reading a CD and DVD. If it works the red laser is OK.
Try reading a BD. If it doesn't work the blue laser is dead.

I tried to clean it now. Inserted UHD - click click - eject.
BD Disc - same two click noises - eject
empty CD-R - same.
Don't have an DVD atm, lol. Can't test that.

doesnt sound to good right?

It's a brick.

Coopervid wrote: ↑

Thu Feb 22, 2024 6:28 pm

It's a brick.

is that normal that they last that short? its not even 4 years old, maybe copied around 1-200 discs.
luckily I have another drive atm. BD-RW BDR-UD04.
Should I get just a second one then? are they still delivered with an good FW?

My ASUS died after a year.

Pioneer UD04 are still good for UHDs but asmcom reported issues with dBpoweramp with CDs with the newest revision.

D3F3ND3R16 wrote: ↑

Thu Feb 22, 2024 9:29 pm

Coopervid wrote: ↑

Thu Feb 22, 2024 6:28 pm

It's a brick.

is that normal that they last that short? its not even 4 years old, maybe copied around 1-200 discs.
luckily I have another drive atm. BD-RW BDR-UD04.
Should I get just a second one then? are they still delivered with an good FW?

Yep, if you manage to get 1 year out of a drive (that isn't Pioneer) these days, you are doing well.