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    . Dereham, Norfolk, UK

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  1. Likely to be plumbers paste, which was brushed on, heated and wiped to shape with a wet rag. It did have a special name, which I cannot recall. Similar stuff was used by panel beaters to fill dents where it was called lead loading, Using bars of solder with the paste.
  2. Try these folk... https://www.elma.com/en/products/rotary-switches
  3. Solder paste tends to be used for PCB work when using SMD components. If using this stuff make sure it is actually solder paste and not just flux. It should have silver listed in the ’ingredients’ and it usually comes in a syringe not a tin. Resin cored 60/40 lead/tin solder is the stuff to use for rail work and general soldering.
  4. All recent production Hornby decoders now have DC Running set off as default to preclude DC Runaway. Check also that your controller is set to Loco Zero off and if on that Loco Zero does not have any throttle applied as stretched zeros that control a DC loco can upset other locos.
  5. If it doesnt have lights then simple jumpers work fine on an 8-pin socket in lieu of a blanking plate. Picture shows them on a decoder test rig to allow checking of a DC controller.
  6. -XS is indeed the 21-pin early ESU sound decoder. -TTS is the 8-pin cheaper sound decoder.
  7. Can this controller have its firmware updated. As you say it is old, it is also likely to be out of date. Edit - you mention Hornby in the topic title but not in text. Are we to presume the loco is Hornby.
  8. From memory you have to spot drill through the PCB track for various lighting variations. All noted in the instructions.
  9. Just in case you are still confused by the diagram the F0f and F0r are the white and yellow switched negative wires from your decoder, via the wiring to the LEDs. As an aside... With bi-colour 3-legged LEDs say red-green you can power both legs at once and get amber-yellow but you need to balance the resistor values against the prime colours characteristics to get the best shade. A simple way is to sub one resistor on the bench with a variable potentiometer, twiddle to get the right shade and measure the pot value. I use this method of indication at paired points so that if on
  10. Which means it is a DC loco, unless second hand when the previous owner may have fitted a decoder. Check that blanking plate is suitable as some have diodes on the plate to control directional lighting. Also Pendo came in two forms - 7-pin DCC Fitted and 8-pin DCC Ready.
  11. The box sides are a bit cut off a sturdy 1m long 25x25mm square extrusion found in Homebase which is slightly ribbed inside and grooved outside. The top and bottom are old credit type cards - in this case an old coachcard. The whole thing is (was) stuck down to the flat steel weights in the loco using double sided tape, so that side is firm. You can however feel the box modulating with the sound, so the top is likely acting as a sound board. I have tried mounting the same sort of speaker face down on a bit of plastic in a regular 20x40mm TTS oblong enclosure and the results are m
  12. This may seem to be contra popular acoustics theory but I have mounted a micro speaker face down into a sealed box. There is a matching hole under the speaker diaphragm. Normally a speaker is sealed into a box with the ‘cone’ facing out, like the special offer above. The sound quality is very good as pictured, but if I rework it so the speaker is inside with the diaphragm facing out then the quality is nowhere near as good. Can anyone say why this should be. The reason for asking is in the Class 08 above mention was made of cutting a hole to exhaust the sound.
  13. They Just popped through my letter box. Thanks.
  14. The Rocrail manual has a good description of each of the major bus systems, which may help rationalise benefits.
  15. All the stay alive does in a DCC situation is keep the decoder running. The motor runs at the last good command speed and direction. If the track voltage is interrupted by a dirty spot or plastic frog the stay alive continues to power the decoder until the signal is restored. Without a stay alive the decoder dies on the dead spot then reboots when track signal is restored. If DC running is enabled it can then shoot off at max chat until it gets a cohesive signal again. Compare with DC where the track voltage is altering with the throttle setting and the stay alive merely acts like
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