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Gaugemaster feedback controller problem


Emmo
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Following on from my earlier posting regarding these controllers, I now have a problem with one of them. Once powered up, with the polarity switch in the centre (normally an off position) the Track LED lights up when I turn the knob, however, there is no power on the track. With the switch positioned in either L or R, the LED fails to light when I turn the knob. I purchased these second hand and the wires on the PC board were a bit of a mess with bad soldering evident, so I have soldered some fresh ones to the same points, however I'm not sure if the ones that were on when I bought the unit were soldered in the right place. If anyone can post a picture of exactly where the wires go I'd appreciate it - if they are in the right places, any ideas on why I'm having the fault explained earlier?

Thanks

Martin

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Further developments...

One of the track wires was soldered in the wrong place. I now have power on the track in both R and F positions with LED illumination, and trains can be controlled with the knob, however, it still illuminates in the central (off) position. I have noticed on of the AC input leads might be shorting to another section of the PC board so I am going to resolver it and then try again. Progress it seems. The other controller on the same panel (it's a dual unit) is totally dead and I've no idea as to why but I only need one, however I'd like to get that working as well if I can.

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And now...

Resoldered the AC wire and I seem to have complete control! However, although it doesn't give any power to the track, the LED lights up when I turn the knob with the R-F switch in the centre neutral position. Is this normal?

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