Vintage Philips 312 Servo belt-driven turntable problem

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Da He Hua
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Vintage Philips 312 Servo belt-driven turntable problem

Post by Da He Hua » 01 Jan 2019 03:36

I recently picked up a free Philips 312. I believe the 33 speed button has a “feather touch” feature. But when I gently touched the 33 speed light button, the red stop light in the middle would flicker a few times, with some clicking noises. And then the platter would spin a little and then stop. If I press a bit harder on the 33 speed light button continuously for like 15 seconds, then after some flickering of the middle stop light and some clicking noises, the platter would actually start to spin without a stop. Based on this description, anyone has any idea what might have gone wrong? Thank you!

Spinner45
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Re: Vintage Philips 312 Servo belt-driven turntable problem

Post by Spinner45 » 01 Jan 2019 03:54

Scan/search over the Philips threads for info.
Been discussed.

Da He Hua
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Re: Vintage Philips 312 Servo belt-driven turntable problem

Post by Da He Hua » 01 Jan 2019 18:55

Bumping up after a search that yields no obvious answers. Anyone has any suggestions? Thank you.

Pauw
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Re: Vintage Philips 312 Servo belt-driven turntable problem

Post by Pauw » 01 Jan 2019 19:23

I searched too and found little ....now I have a GA 212 but have seen a few threads on these tables including the 477 which I think might have a similar mechanism......with the 477 there are several LEDS which over time become weaker and need replacing....I think the one that might be the problem is the one under the tone arm at the bearing .....this is a red one which activates the auto mechanism if the 312 is similar to the 477 that could be the problem. It can be easily replaced an is a standard red LED. Hope this helps if not there are one or two Philips experts here ...... :D

nat
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Re: Vintage Philips 312 Servo belt-driven turntable problem

Post by nat » 02 Jan 2019 03:11

I suspect the 312 uses bulbs - certainly the 212 does. I wonder, though, if the issue could actually be dry skin. I have to breath on my fingers, or even lick them, to get the continuity through them to make the switches work. See if licking helps. Lotion may be a slightly less offensive solution if you live in a germophobic home.

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