I dug an old 1210 out of storage this weekend and noticed that when I powered it on, it would continuously rotate back and forth about 1/4 of a turn instead of rotating like normal. Any idea what could be causing this?
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Re: Rotating back and forth when powered on
You have drive issues. There is no easy way to fix or to isolate the
problem. You'll have to take it to a service technician who can test
your unit, and fix the problem. Usually it's one (or all) of the 3 main IC
(integrated circuits) which cause this problem.
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You can try cleaning all controls with something like De-oxit.
Sometimes, oxidization causes speed issues.
You will need to take the cover off the bottom to access the controls then, spray with De-oxit and move the sliders back an forth for a couple of minutes. Just to make sure, spray everything a couple of times.
There should be instructions to access the sliders, and pots, online.
Good luck, hopefully the issue is not due to a failed electronic component.
I don't know what you mean by "directing them to the mains". Can you simply plug them into a known good wall outlet? You are right that both not lighting up suggests the cause is outside of the turntables.
If you're lucky, this can just be a dirty/corroded speed control. Try removing the platter and you should see 2 holes lower center of the indented section. In those holes should be the coarse speed controls. These really set the range of the fine speed controls we play with on the outside. Use a good commercial contact cleaner and spray these babys. Gently move them a bit counter clockwise and clockwise, spray again, then return to about where they started.
If that doesn't help, you either have a motor issue or the controller board has a problem - no easy fix there.
Since this is a direct-drive turntable, it isn't a slipping or stretched belt.
You will need a technician with a couple pieces of equipment and some experience/training to find the source of the problem.
I suspect the part(s) will be the minor cost of the repair.
Hiya, first check the voltage is correct (on the back labels etc) there are a stack of 110/220 units and tend to travle cross border. Check the plug also, if its the old 2 pin moulded, change it for a new one 3 pin etc
If not there in the power supply itself is dodge and have to go in to someone. Should be 2 much of a big deal, but get a quote first.
Have you lost power, or is the platter rotating abnormally? If there is no power, it's the power supply that needs to be replaced. If it's acting funning, then some components on the main drive PCB are damaged. In either case, professional help is highly recommended.