rob t wrote:Have you checked the mode switch?
Not tried this.Katie Bush wrote:What happens if you apply the power via the battery contacts, instead of via the DIN socket?
No: it's a conventional seven pin DIN plug.Katie Bush wrote:And, stupid question no doubt, does your DIN plug have the extra, central, pin?
I'll have to look at the 3V28 in the store for that: as the 3V28 is in reality a doorstop now, my intention is to provide a simple 12V PSU to run the machine from, and thus to maximise the space inside the cabinet for the 405 system - it's a small wind-up gramophone cabinet that came with a Brown folded horn that Chris kindly collected for me. Although how I have wired the DIN plug (1&6 = +12V, 2 = 0V) means it works via the charging path, there is an additional diode drop from D9 in the way from the PSU now. I can't help but feel it's worth shorting D9 out as it'll never be used on battery again...Katie Bush wrote:Although not electrically connected, the central pin actuates the change over switch (from battery to external PSU - and vice versa).. If memory serves me, the central pin is also longer than the others.
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