Heljan Class 52

Scale:
HO Scale


This installation uses the following decoder:


TCS DP2X decoder installation in a Heljan Class 52, performed by Robert Lewis.

Once inside, the blanking plug can clearly be seen, lift remove the plug to remove it, for storage I taped mine onto the circuit board for future use.
Once inside, the blanking plug can clearly be seen, lift remove the plug to remove it, for storage I taped mine onto the circuit board for future use.


Fit the new TCS decoder, noting the orientation of the circuit board, or if using a wired decoder, the orange wire is pin 1.
Fit the new TCS decoder, noting the orientation of the circuit board, or if using a wired decoder, the orange wire is pin 1.


Once fitted test on your test track before refitting the bodyshell.
Once fitted test on your test track before refitting the bodyshell.



Important Soldering Tip

Please do not use any flux either liquid or paste on the mother board. Over time, the acidic properties of liquid or paste flux will begin eating away at the fiberglass PCB and will damage it. Use only Rosin-core solder or no-clean flux approved for electronics use.

TCS recommends the use of Kester "44" Sn63 Pb37, .015" diameter Rosin-core solder. Kester part number 24-6337-0007.

You can order this solder from the following retailers:
Digikey - PN:KE1110-ND
Techni-Tool - PN:488SO6775

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