Hi guys,
I recently acquired a "non-functional" Technics SL-D1 turntable, that I want to fix up.
First thing I did was spraying some contact cleaner on the potentiometers. While cleaning up the internals, I noticed that one of the capacitors(C1) appeared to look suspect (bloated appearance) so I replaced it.
The problem now is that the turntable is spinning way too fast at both 33 and 45 settings, no matter how I adjust VR1, VR2, and VR3(pitch control dial).
Even with all potentiometers all the way to the "-" position, the speed is too fast.
As I did not really try adjusting the speed before changing C1, I'm not sure if that was the cause of the problem.
Would appreciate any suggestions on how to go about troubleshooting the issue..
Here is the schematic:
And the PCB diagram:

I recently acquired a "non-functional" Technics SL-D1 turntable, that I want to fix up.
First thing I did was spraying some contact cleaner on the potentiometers. While cleaning up the internals, I noticed that one of the capacitors(C1) appeared to look suspect (bloated appearance) so I replaced it.
The problem now is that the turntable is spinning way too fast at both 33 and 45 settings, no matter how I adjust VR1, VR2, and VR3(pitch control dial).
Even with all potentiometers all the way to the "-" position, the speed is too fast.
As I did not really try adjusting the speed before changing C1, I'm not sure if that was the cause of the problem.
Would appreciate any suggestions on how to go about troubleshooting the issue..
Here is the schematic:

And the PCB diagram:

