found out. BA5815M is defective. it looks like by the design, a servo
controller IC. I jumped the fuse, and a roll of smoke came out of it.
Serves you right. You should have installed a replacement fuse of the type
required instead of jumpering it.
i believe the tray being stuck put too much stress on teh chip thus
destroying it and blowing the fuse.
Nope. All that would happen is that the drive would attempt to open the
drawer, but the SYSCON would time out and reload the drive.
It's more a strain on the drive motor than it is on "teh chip."
As for destroying the chip: the fuse blew in the presence of an internal
circuit error, protecting the chip. *YOU* destroyed it when you decided to
bypass a protection fuse like a stupid know-nothing idiot!
Furthermore, it's also possible that the chip could have blown due to your
soldering because it's certainly likely that you may have unknowingly
cross-soldered something, causing a short circuit that may have zapped the IC
in question, and may have taken other parts in the same circuit along with it!
anyway, before the chip smoked, the door moved a quick milimeter before
detonation. lol.
i need a new IC.
No, you need a new PS-2, and the self-restraint from trying to fix it when
something goes wrong with it.
If you can manage to install the new chip in your busted PS-2 without
destroying it with the soldering iron or ESD, you'll only blow it out again
when you fire it up (assuming the jumper you installed in place of the fuse is
still intact). There is something else wrong with the affected circuit that
has caused the fuse to blow, and that has to be addressed first.
But, getting the parts to fix it is not going to be cheap, and that's assuming
that they're available to begin with!
Furthermore, you need good technical proficiency, as well as the proper tools,
to service these things correctly, a trait that you apparently lack as
evidenced by the fact that you needlessly destroyed a non-standard component
and possibly caused a cascade of other failures within the same circuit with
that bypass stunt you pulled.
The cost for repair of this deck will definitely exceed its value in the
condition you put it in, so you may as well shit-can the motherfucker and buy a
replacement.
The reason why I'm bitter, because I had to clean up after someone else's
attempted repair of their PS-2. They didn't fix the problem (disc read error),
but they did succeed in damaging their console even more.
So, you can understand where I'm coming from, as well as other techs who had to
clean up after someone else's escapades of tweaking potentiometers, sticking
screwdrivers in places while the unit is still energized, or perhaps even
forgetting to supply all the parts they had taken out when they send whatever
they have to the repair shop. >:-[ - Reinhart
