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Reply to "MTH Protosound 1.0 Engine Stuck in Neutral"

@Joe Allen posted:

         Way too fast from off to on again to start with. Let the engine idle at 12 volts for a couple of minutes to get the BCR charged up, then cut power to see  sounds continue for at least 7 seconds. You will hear a pl sound at the end when the board shuts down. Hard to tell, but it sound to me the sounds are not continuing long enough.

Joe, based on what Mike was saying above, sounds like my BCR is not staying on long enough.  After I shut off power, the sounds will only stay on for a little less than 3 seconds....please note that I did allow the BCR to charge for at least 2 minutes before cycling power.



@GGG posted:

Hard to say from that video, what transformer, is voltage going to Zero?  How long are you holding it off, after a few seconds it will shutdown.  Voltage must be below 10V before changing direction.

Can you actually do a reset and get clinks and clanks?  If not, it has conflicted software and needs a reset with ASC chips.  NOT the make PS chip.  G

I do indeed get clinks and clanks when I lower voltage and then raise the power back up, indicating it is still in reset mode.  However, I tried what Mike mentioned earlier, which is lower the voltage to about 8 volts, and then pressing the direction transformer on my postwar ZW transformer.

Please note that at one time, this engine did cycle fine with the BCR it has now.  So I'm not sure if the BCR has gone bad or the charging circuit to the BCR.  Any specific components on these boards that could go bad?

Last edited by Lionel16

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