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Trouble programming MTH locomotive

734 Views 13 Replies 3 Participants Last post by  ZaphodScotsman
today, I tried programming an MTH loco on the JMRI decoder the model railroad club I’m part of uses. However, when I did, I got this message: Programmer error: no acknowledge from locomotive (308)

but that’s not true at all, THAT'S NOT TRUE AT ALL! The loco is on the track, and it was set to program, that means there IS an acknowledgment from the locomotive! I will not tolerate lying programs and I don’t have time for nonsense! Can someone please tell me how to fix this glitch? I thank you in advance.
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The locomotive comes with a Proto-Sound 3.0 decoder. But what exactly is a keep-alive capacitor?
What does the keep-alive capacitor look like? Forgive me, this is the first time I heard of such a thing. Would I need to take the loco apart to remove it?
Circuit component Passive circuit component Electrical wiring Electronic engineering Electronic component

here’s a picture I have, the capacitor is the round blue cylinder. Trouble is, it’s directly attached to the board. I’m not sure I’ll be able to remove it without making it permanent
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But how do I press F3 when I’m unable to access the throttle on the computer while programming?
Ok I trie dodging as you suggested today, Scott, and still got a 308 error! What am I doing wrong?!
Save it without reading and writing the sheets? Why didn’t I think of that?! Too late to try it now: I left the club

I'll have to giv it a try two weeks from now
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