TCS MC4P-MH Decoder Installation for HO-Scale Hornby British Railways class 73 electro diesel . It was performed by Robert Lewis of Tilehust, Reading, United Kingdom

Important Soldering Tip:
Please do not use any flux either liquid or paste on the mother board. It will damage it. Use only Rosin core solder approved for electronics use.
We recommend to use only Kester "44" rosin core, SN63PB37, .015" diameter, part number 24-6337-0007.
This can be ordered from Techni-Tool under Techni-Tool part number 488SO157


To remove the body, gently pry apart to unclip the body from the chassis  in the 8 positions marked with arrows.  Once un-clipped, the body will lift straight up and off.


The blanking plug is easy to remove, just by lifting straight up. Fit the TCS MC4P-MH decoder with the orange wire to the pin marked 1.

Test the installation and programme on your test track and then refit the body.

Other solder tips: When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire

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