I've got a NTSC V7 (390001) date code 3B with MAGIC 3 that's not playing backups. Laser is 5.2 and 5.3 ohms.
It has played CD backups for a few days almost continously. Now it playes only originals. Is it possible that the BA5815 is burned patially? How can I tell that.
I've checked all the soldering points, they're OK.
The chip looks like "homebrew" I mean PCB is lousy and no paint or laquer on it.