 Joined: 01/01/2022(UTC) Posts: 31 Location: New York, Glenmont
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I currently use 6 6646 white transformers on my analog layout (4 for 3rd rail, 2 for overhead). About once every year or two, one will fail, usually with the rheostat going bad but the fixed terminals still working fine. This tells me that the average useful life of a new transformer is about 10 to 12 years. I didn't have this issue with the older blue transformers. The only reason I replaced the old ones is that I don't want to fry the electronics on newer locos, which can happen using the old style transformers.
Has anyone else noticed this issue of a relatively short life for these units? Can anything be done, or do I just have to resign myself to replacing them periodically?
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Joined: 10/02/2021(UTC) Posts: 3,886 Location: Michigan, Troy
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I have a 6001 that just up an died. I opened it up to check the resistors and fuse, and all it was was a wire that became unsoldered. Have a look inside yours.
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 1 user liked this useful post by marklinist5999
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Joined: 01/01/2022(UTC) Posts: 31 Location: New York, Glenmont
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Originally Posted by: marklinist5999  I have a 6001 that just up an died. I opened it up to check the resistors and fuse, and all it was was a wire that became unsoldered. Have a look inside yours. Sounds like a plan. Only problem is that they're sealed units. What's the best way to open one without causing undue damage?
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1 user liked this useful post by Norbstarted1969
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Joined: 10/02/2021(UTC) Posts: 3,886 Location: Michigan, Troy
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Yes Norb, I used a 1/8 inch bit on my cordless drill at low speed to drill out the plugs. Don't go deeper than needed. The scraps will fall out when you open it up.
You can get replacement plugs, but I just used scrap Faller building kit sprues. Push them in util they hold the case on, then cut off flush. The ends with the nubs can be filed a bit for a snugger fit if needed.
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Joined: 01/01/2022(UTC) Posts: 31 Location: New York, Glenmont
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Thanks, I'll give it a try
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1 user liked this useful post by Norbstarted1969
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 Joined: 21/12/2012(UTC) Posts: 1,483 Location: Hrvatska
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2 users liked this useful post by 1borna
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Joined: 01/01/2022(UTC) Posts: 31 Location: New York, Glenmont
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Actually, the fix turned out to be easy. I just bent the brass tab attached to the control knob down by a millimeter or two to improve the contact. Unit works fine now.
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2 users liked this useful post by Norbstarted1969
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