 Joined: 10/02/2021(UTC) Posts: 3,881 Location: Michigan, Troy
|
Has anyone ever done this, wiring the new speaker to the existing board, thus not using the new board with the speaker plug in port?
The 37537 br 120 has no wiring schematic with the parts list that came with it new. This has an early Loksound small black wrapped decoder below the pcb board, and the afterthought tiny sound module wired on. Can it work? If the new 6 pin board must be used, there may not be enough room for the old board, and the decoder, and new speaker. Might the existing large round speaker mounted in the frame work?
Mighht it be better to gut everything and start from scratch?
The existing decoder takes some time to warm up to run it well, and the whistle sound is lame. I bought it new at a substantial discount because someone ordered it and declined when it came in.
I would appreciate the help. I'm fairly seasoned with soldering, wiring, and have installed motors in things that never had any, led's, and resistors. I would rather keep the original pcb in it as the cab lighting makes contact with it, and the pantograph switch is on it's bottom.
So thanks if anyone can advise me.
|
|
|
|
|
|
Joined: 16/02/2004(UTC)
Posts: 15,441
Location: DE-NW
|
The loco has an early LokPilot decoder with 8-pin connector. For upgrades I think I'd keep the original PCB, install a new decoder with 8-pin connector, and wire the new speaker directly to the decoder. |
Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS  |
 1 user liked this useful post by H0
|
|
|
|
Joined: 10/02/2021(UTC) Posts: 3,881 Location: Michigan, Troy
|
Thanks HO! I meant to say it has an 8 pin pcb port. The 6 pin decoders were discontinued. I shouldn't try typing in between workout sets, but my gym, layout, and computer are within feet of each other in the basement.
|
|
|
|
|
|
Joined: 08/12/2021(UTC) Posts: 141 Location: California, Sonoma County
|
For me, this lok runs well mechanically. 37537. Please see attached link and post #3. I think it has a condenser to help it run when it loses power on a dirty track. https://www.marklin-user...302-Marklin-37537-br-120I did mention that 37538 is a totally different design in the decoder/electronics and hesitates a lot on dirty tracks. I cannibilized it for parts. So Suggest you might want to think twice before modifying its electronics on the 37537. If you had the 37538, I would suggest you go ahead and change the electronics.
|
1 user liked this useful post by Bill L
|
|
|
|
Joined: 10/02/2021(UTC) Posts: 3,881 Location: Michigan, Troy
|
Thanks Bill. Yes it has a condenser but that is on the PCB board and will remain with it. As I mentioned earlier it hesitates until warmed up even on the cleanest track. Otherwise it is a strong puller. No effort to tow six passenger cars and a diner up the steepest grade.
|
1 user liked this useful post by marklinist5999
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
