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Post by e093116 on Jun 26, 2017 15:22:56 GMT
Hello,
I've noticed over the past month that when I turn on my LS1, the first selection made is generally off by one position. For example, if I select A1, the mech stops and plays C1, but then subsequent selections generally are made correctly. This behavior has increased in the past week or so to about 20% of the time the mech stops one position off. Also, every so often, the mech will stop 3-4 slots "down" from where it should.
I have checked and rechecked the mechanical adjustments with no improvement. The caps in the SCC are original. I am wondering if this behavior is a sign of "tired" caps?
Thanks,
Bill
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Post by Ron Rich on Jul 3, 2017 16:30:00 GMT
Hi Bill,
My guess is the clutch reset lever switch ( pair closest to you on the reset cam actuator--either 2M-1, or 3M-1 on that mech), is not making well- oily/pitted, worn out ?? -- could also be the trip contact, in the detent relay, is dirty--if you do not know how to service contacts, check the FAQ's above. Ron Rich
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Post by robnyc on Jul 4, 2017 0:58:02 GMT
Bill, have you --thoroughly-- oiled the mech? Gummy oil in the clutch , dashpot or trip lever can account for this sort of thing. You may have to use a lightweight oil (10wt) initially to loosen the old oil that remains in the bearings. This is why I never cared for the decision to reverse the mech and place it "behind" the magazine, it led to even more neglect by op's.
RobNYC
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Post by e093116 on Jul 9, 2017 11:36:46 GMT
Ron, Rob,
Thanks for the comments. I checked the switches and oiled the mech without improvement. I pulled the SCC to take a better look at it. There was a circuit board there that I removed/reinstalled. I noticed the edge connector was dirty and after cleaning, the unit operates as it should once again. I'm not 100% that this was the cause of the problem, but the machine has worked fine for a week or so now.
I suppose I learned something, which is to pull every connection apart and check/clean before putting back into service, if only to avoid these sort of issues.
Thanks again.
Bill |
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Post by Ron Rich on Jul 9, 2017 13:55:32 GMT
Bill,
Unusual for that type of connector to fail--more then likely it was the "Mech" connector, on top of the SCC. This is the A-MP ( now TEC)(orange) connector used on top of the SCC. The female connectors used on that model tend to "expand" and not make/loose contact. New, and improved female pins are now available. One other thing--on SCC 8 and 9's, you want to look at the 56K 2 watt resistor mounted to code A boards--they tend to change value, and should be replaced with a minimum, 2 W WW, or larger wattage unit, mounted above the board, "in the air" to prevent board damage . Ron Rich
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