Anyone have experience with a single channel going out that is from a different cause?
Anyone have experience with a single channel going out that is from a different cause?
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For a single failed one in a channel, it's easy to follow the trace to the connection, so you'd only have to replace the one that seems to have failed.
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I need one for a LCRX repair, waiting until I have a more full component list before I order. G
Yep, when I looked at the SC-1 board, it seemed to be the only one that made sense to have failed, the other passive components are much less likely to fail.quote:Originally posted by Gweedo:
The Motorola parts did the trick on my bad SC-1. Have one more to do. Wow thank you!
I'm glad they use readily available components at least in some of the circuits, makes it easier to keep them running.
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The one we're using is in a TO-92 plastic package.quote:Originally posted by GGG:
That TRIAC is a .8A Triac also used on the lighting and coupler control outputs of the LCRX, LCRU 1 and 2 and R2LC. Small round can like component. It use to control smoke output also, but Lionel moved to a 2 amp TRIAC that looks like a Voltage Regulator chip or power transistor.
I need one for a LCRX repair, waiting until I have a more full component list before I order. G
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The SC-1's were cheap enough, and they'll be good enough to control some switches. I also have a few SC-2's that seem considerably more robust.
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I have both, but I see no reason to dump the SC-1's, they work perfectly well for switches if you don't short the outputs. I bought my SC-1's on eBay for $15 or less, the SC-2 is just a bit more.quote:Originally posted by Jim Battaglia:
Dump the those cheep SC-1's and go SC-2's with true relay control and higher ampacity for better power management. You are fighting yourselves trying to maintain the SC-1's when a better solution exists.
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quote:Originally posted by gunrunnerjohn:
It appears that the leakage currents through the SC-1's affect Fastrack switches and make them chatter. I've used the SC-1's for 022 switches and 1022 switches with no problems.
Thanks for the explanation. I did not know what caused the chatter, but my Fastrack switches chattered terribly. I changed to SC-2s and all is good. Remember on SC-2s to skip the first position or cut the trace. I just skipped for now.
quote:Originally posted by gunrunnerjohn:
It appears that the leakage currents through the SC-1's affect Fastrack switches and make them chatter. I've used the SC-1's for 022 switches and 1022 switches with no problems.
I never opened mine up, but I wonder if there is a way to put a cap or some kind of gate to stop the leakage on the circuits.....
You aren't trying to use Channel 1 and running into that problem, are you?
Gunrunnerjoh
I know this is a old post. I should have researched SC-1 before hand but, didn't. I'm getting ready to take down my medium size layout and start all over. This one will be TMCC and Legacy. I was at a train show over in St. Louis this past weekend and seen 5 new SC-1's for 10.00 each so I bought all 5. In my case with a new layout would you even fool with them of just go with the SC-2. Your information is appreciated.
Larry
Well Larry you're getting 5 sc-1's for about the price of 1 sc-2. The fix as shown above works, I've done it. But the sc-2 does work a lot better, so it's really up to you and your budget!
If the SC-1 works, and you already have them in hand, why not use them. The worst that can happen is you're not happy and you decide to upgrade to some SC-2's.
Thanks for the information guys. I have more than 20 FasTrack remotes in this old layout and probable will need a few more in the new one. I'll see how these work when I get that far. I'll compare them with a SC-2 before I trash them.
Larry
SC-1's have fairly limited current carrying capability on the individual terminals. I think the sum of all the SC-1's terminals equals the capacity of a single channel on an SC-2 or ASC controller.
If you don't push them, they work fine. There are some connections that you can use and SC-2 or ASC for that you should never try with an SC-1 (e.g. block control).
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For a single failed one in a channel, it's easy to follow the trace to the connection, so you'd only have to replace the one that seems to have failed.
John,
I have two SC-1s I need to repair, can you tell me how you did it.
Thanks,
Art
Thanks John, Digikey order on way, will let you know how I make out with repair.
Art