Hi, I cannot continue the old thread. My post from about for years ago is this one: My Post
I had the issue that the CD spun up backwards (counter-clockwise), I then changed the two spindle motor transistors (T102, which is an 33825 and T103, which is a 32825) and the CD spins up the correct way around now. The flex cable which connects the pickup to the board seems to be a bit finicky, therefore I got "Error" lit in the display for a brief moment after pressing "Play" while the CD spun up just for a moment. I cleaned the contacts of the flex cable with 99% isoprophyl alcohol and after the current assembly it works every time (it would read the CD's TOC after it's switched on and it would play the CD).
The remaining issue is with the tray motor. It cannot spin the other way around to close the tray. Currently, the tray is removed to test the behavior further. It seems that the player gives the command to close the tray, but the motor won't spin up to make it happen.
There's just one micro switch on the board which controls the tray motor. It also works as a sensor for the player to know if the tray is currently in motion. The switch gets pressed constantly when the tray is closed or when it's open as far as possible. I now describe what the player does at the moment:
Power on with the micro switch pressed - TOC is read (if the switch isn't pressed the TOC won't be read since for the player the tray is between the closed and open state)
Open/Close and letting go of the micro switch starts the tray motor
Pressing the micro switch stops the tray motor, for the player the tray is now open
Open/Close and letting go of the micro switch does nothing
Pressing the micro switch makes the player read the TOC again, so for the player the tray did close and the CD is ready to play
At first I thought that my test setup (I didn't screw the CD mechanism back in, I just let it sit in it's place on the main board) screwed with the micro switch and the mechanic which lets go of it and presses it again in-between the tray movement. But after screwing it all together correctly the player still won't close the tray unfortunately. Could there be another bad transistor? I'm unfortunately not good at reading service manuals, there are several transistors on the board since I had a bit of a hard time finding the two I wanted to change. I could at least try to find out which transistor is for the tray motor.
Edit: According to the service manual I found here (on page 12 on the far right), T110-T115 seem to be responsible for the tray motor.
But maybe someone had the same issue before and the culprit is something else entirely.
I had the issue that the CD spun up backwards (counter-clockwise), I then changed the two spindle motor transistors (T102, which is an 33825 and T103, which is a 32825) and the CD spins up the correct way around now. The flex cable which connects the pickup to the board seems to be a bit finicky, therefore I got "Error" lit in the display for a brief moment after pressing "Play" while the CD spun up just for a moment. I cleaned the contacts of the flex cable with 99% isoprophyl alcohol and after the current assembly it works every time (it would read the CD's TOC after it's switched on and it would play the CD).
The remaining issue is with the tray motor. It cannot spin the other way around to close the tray. Currently, the tray is removed to test the behavior further. It seems that the player gives the command to close the tray, but the motor won't spin up to make it happen.
There's just one micro switch on the board which controls the tray motor. It also works as a sensor for the player to know if the tray is currently in motion. The switch gets pressed constantly when the tray is closed or when it's open as far as possible. I now describe what the player does at the moment:
Power on with the micro switch pressed - TOC is read (if the switch isn't pressed the TOC won't be read since for the player the tray is between the closed and open state)
Open/Close and letting go of the micro switch starts the tray motor
Pressing the micro switch stops the tray motor, for the player the tray is now open
Open/Close and letting go of the micro switch does nothing
Pressing the micro switch makes the player read the TOC again, so for the player the tray did close and the CD is ready to play
At first I thought that my test setup (I didn't screw the CD mechanism back in, I just let it sit in it's place on the main board) screwed with the micro switch and the mechanic which lets go of it and presses it again in-between the tray movement. But after screwing it all together correctly the player still won't close the tray unfortunately. Could there be another bad transistor? I'm unfortunately not good at reading service manuals, there are several transistors on the board since I had a bit of a hard time finding the two I wanted to change. I could at least try to find out which transistor is for the tray motor.
Edit: According to the service manual I found here (on page 12 on the far right), T110-T115 seem to be responsible for the tray motor.
But maybe someone had the same issue before and the culprit is something else entirely.
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