Excellent forum, I looked with great interest on the subject of ECM Compspeed Controllers.
I have been using a pair of these for years on my twin track layout. But I've always wondered what I would do if either or both failed. So decided to draw up a diagram with all components listed.
I got a bit stumped by the IC as the number was only partially visible. CD 4001 as mentioned in the forum does not appear to be whats marked on mine, but of course I could be wrong and probably am. The part that can be read is RCA 449 ( I thought I detected a 1 in front of the 4 but nothing comes up on the net with that number but 449 does). The number above RCA 449 I think starts with CD and looks like it ends with RE. Both units were purchased at the same time and are the CA direction switch type. Picture included as best as I could get it of the offending chip.
Also have original instructions and my own component diagrams and diagrams of the copper side and component side with all relevant drill holes if anybody wants them. With a bit of circuit board and some ferric chloride you can make your own. I did that with the Optronic electronic ignition on my Ginetta car after I managed to fry the board and blow up half the components, (what a berk)
still I made a completely new one and 3 years later it sill runs fine, and I built a backup board as well, two for the price of one.
Also keen to hear peoples comments on the fact that I use Relcos with the Compspeed, I appreciate
not every body likes them, I also appreciate most people on this site have far more knowledge and expertise than I do. All my loco's are Hornby Dublo, many with vertical motors most of which I've re-wound myself and converted to neodymiam magnets. Generally they draw 0.4 amps at 10volts, this seems reasonable to me but others may think otherwise and improvements could be made ie: no Relcos, wrong controllers anyway etc. Again I must say, great site.