Given the on line and off line requests here is the procedure for replacing the "P" chip in the MKII..
Installing the P4 chip in the Audio Aero Capitole MKII CD Player.
Tools required: 2mm (for cover) and 3mm (for CD drive mount) hex wrench available at any hardware store for about 50 cents each. Medium jewelers screw driver. The right one comes in an inexpensive kit (about $5) with about five different sizes. Even better is an IC removing tool for this size square chip and I dont know how readily available that is. I used the screwdriver technique.
All references assume that the MKII is facing you i.e. the front panel is at your belly.
Total time: 30 minutes
Caution: Be sure to remove the power cord before beginning and ground yourself to remove any static charge build up on yourself. Its a good idea to ground yourself often during the process.
Remove the cover. The chip to be replaced is on the front panel circuit board mounted vertically. The chip you want to swap has a red dot on it with its version handwritten e.g. P2 in my case. For reference, so you know what you are dealing with, look at the board with the STARS DAC mounted on it at the rear of the unit and you will see another chip that has the same form factor i.e. its square and has the same pin count. You should notice two things. 1) one corner of the chip is cut off as an orientation reference and 2) there are two opposite corners that have a little space between the chip and the socket to insert a removal tool/screw driver.
Gain access - I found that the easiest way to gain access to the chip is to remove three mounting screws from the CD drive. Note these screws are actually screws of the mounting fixture and not the drive itself. Remove the two screws on the left side and the one on the right front. Count how many half turns you make with the hex wrench to loosen the screw. This will allow you to screw them back in with the same tension on the mounting springs. Remove the wire connector from the top of the front panel (there is a little RTV on each side to prevent it from coming loose in transit). These wires connect the magnetic switch that detects door open. Now, gently rotate the CD drive to the right about thirty degrees. As you do, you will notice that there are large foam rubber mounting pieces that may dislodge. Thats OK, youll want to remove them for better access. The CD drive will safely suspend from its remaining mounting screw while you swap the chip.
Remove the old chip Its important when removing the chip that 1) you verify the orientation of the cut off corner (lower left) and 2) you SLOWLY walk the chip out of its socket by alternating gentle prying on the two opposite corners where there is access to the chip (upper left and lower right). Slide the screwdriver under the CD drive and into one of the access corners. Important! Before you begin to pry the chip up, put a finger on the outside corner of the chip socket to support it and prevent cracking it. Pry slowly and carefully until the chip moves. Its in pretty tight. You might actually hear it move a bit before you see it move. The noise is from the very tight spring clips of the socket. As soon as you hear a little sound, stop and go to the opposite corner. Back and forth two or three times and it will be out.
Install the new chip Place the P4 chip with proper orientation on the top of the socket. Gently push it down all the way while taking care to push it down evenly all at once.
Reassemble by reversing disassembly procedure and enjoy!
Installing the P4 chip in the Audio Aero Capitole MKII CD Player.
Tools required: 2mm (for cover) and 3mm (for CD drive mount) hex wrench available at any hardware store for about 50 cents each. Medium jewelers screw driver. The right one comes in an inexpensive kit (about $5) with about five different sizes. Even better is an IC removing tool for this size square chip and I dont know how readily available that is. I used the screwdriver technique.
All references assume that the MKII is facing you i.e. the front panel is at your belly.
Total time: 30 minutes
Caution: Be sure to remove the power cord before beginning and ground yourself to remove any static charge build up on yourself. Its a good idea to ground yourself often during the process.
Remove the cover. The chip to be replaced is on the front panel circuit board mounted vertically. The chip you want to swap has a red dot on it with its version handwritten e.g. P2 in my case. For reference, so you know what you are dealing with, look at the board with the STARS DAC mounted on it at the rear of the unit and you will see another chip that has the same form factor i.e. its square and has the same pin count. You should notice two things. 1) one corner of the chip is cut off as an orientation reference and 2) there are two opposite corners that have a little space between the chip and the socket to insert a removal tool/screw driver.
Gain access - I found that the easiest way to gain access to the chip is to remove three mounting screws from the CD drive. Note these screws are actually screws of the mounting fixture and not the drive itself. Remove the two screws on the left side and the one on the right front. Count how many half turns you make with the hex wrench to loosen the screw. This will allow you to screw them back in with the same tension on the mounting springs. Remove the wire connector from the top of the front panel (there is a little RTV on each side to prevent it from coming loose in transit). These wires connect the magnetic switch that detects door open. Now, gently rotate the CD drive to the right about thirty degrees. As you do, you will notice that there are large foam rubber mounting pieces that may dislodge. Thats OK, youll want to remove them for better access. The CD drive will safely suspend from its remaining mounting screw while you swap the chip.
Remove the old chip Its important when removing the chip that 1) you verify the orientation of the cut off corner (lower left) and 2) you SLOWLY walk the chip out of its socket by alternating gentle prying on the two opposite corners where there is access to the chip (upper left and lower right). Slide the screwdriver under the CD drive and into one of the access corners. Important! Before you begin to pry the chip up, put a finger on the outside corner of the chip socket to support it and prevent cracking it. Pry slowly and carefully until the chip moves. Its in pretty tight. You might actually hear it move a bit before you see it move. The noise is from the very tight spring clips of the socket. As soon as you hear a little sound, stop and go to the opposite corner. Back and forth two or three times and it will be out.
Install the new chip Place the P4 chip with proper orientation on the top of the socket. Gently push it down all the way while taking care to push it down evenly all at once.
Reassemble by reversing disassembly procedure and enjoy!