Lionel CCs2 6-11154 Schematics or Diagrams

I'd put the R4LC in first with the bell control board and see where that leaves you.  If that fails, and you still have a short, I'd probably suspect the DCDS.  A quick diagnosis is to unplug the large black 6-pin connector and see if the short goes away.

This is the blown bell coil drive pcb,

Looks like U6 and C10 is shorted/blown.

Is 66RC the part number or L718

and could you help me on C10 value?

& description on U6

Regards,

John

I have a bell control board in the mail, when I get it I'll take a look.  I'm sure you understand that I'm not inclined to take apart one of my CC2s locomotives just to see what part it is!

Pretty sure that L718 would be the date code, in this case 2007 the 18th week.  I can't find a 66RC anywhere, so I don't know what that is.  I'd guess a FET, but that's just a guess.

My feelings exactly I do not want to have two of these apart at the same time. I just purchased the other one, on eBay last week. I’m hoping to double head them with a very large consist. 

Does TMCC allow two engines assigned the same ID? I’m hoping so that when I use the bell or steam effect they both do the same effect. If I lash them only front engine whistles and rings the bell.

You can use the same ID, though I think they typically work better in an MU configuration.

For Legacy, you can configure an MU so that both locomotives whistle and ring the bell, but only one will have crew talk.  Also, the lighting usually works better configured as an MU, though since the CC2s is early Legacy, it may not be perfect.

FWIW, I just picked up a second one, I think they'll be really boss running together.  I'll have to figure out how to renumber one of them, though all the lighted number boards will be a challenge.

The cc-2 uses a RCDR not r4lc. I have the board  in hand that you have in picture and I don't see those components  on my board. You have a better overall picture of the board I can see.

Right you are Bob, I actually ordered one of those RCDR's to have a spare, so I actually should know that!

Here's the bell control board, I'm not seeing those components either.

However, if we look at the smoke fan control board, we have better luck.

The posters picture does not  look like  the smoke fan pcb board ,close but not correct. C10, he claims to be a cap. but on the smoke pcb board it is a resistor r32

It may be a bell board. I have one thats similar though not exact. I assume there were changes along the way.

Before installing a new or repaired board make sure you check the bell coil. It should read about 100 ohms. Yours may be shorted. I got three bell coils and two had their leads ripped out. The coil is wound with wire thinner than your hair so reattaching them took a bit of effort. The way they are assembled (read poorly) its possible the two leads got shorted under the tape.

If your coil does read shorted you may be able to fix it after removing the tape. 

BTW on my board the cap is labeled C3 but in the same location. Its a 10uf, 106C.

Pete

Probably right about the changes, clearly the bell board as pictured doesn't look like that one he posted.

Here is a picture of both sides. I have one on order from Lionel. But would repair this one for a spare if possible. I also checked the tethered Bridge and it is good.

This is a picture of the RCDR I do not see any issues visually.

This is the I am using. They are different. One thing I noticed is yours seems to use   outside rail ground while mine has both outside rail and signal common. My bell board does not respond if Legacy common from the RCDR is not connected to this  board. Makes me wonder if your board will work directly with a TMCC signal vs Legacy.

Pete

Mine is rev 2 yours is rev 1, can you get me the value on the cap c10 and the number of the part right above. It’s a little fuzzy to read

The regulator appears to be a TI M2937IMP-5.0 low dropout 5V regulator, the device marking is L71B for this part.

The cap is a 10uf tantalum, don't know what the voltage is, but probably in the 16-25 volt range from the size. 

Yes, I just got my bell controllers in.

Great John thanks I’ll let you know how it’s going after I get my parts.

Did you ever fix this board?

 Yes,The bell controller is fixed. The motor controller is still giving me issues.  I also replaced the motor encoder that was really easy and worked well. I sent two defective  Motor controllers back to Lionel that took about six weeks for them to turn them around. I tested them without installing them completely they seem to work fine then once I put the engine all together and installed them all the way, when I put it on the layout it started having issues not communicating well. so back to the bench and she runs ok at low speeds but when I increase to speed 5 or 6 she comes to a stop. If I roll the knob down a few steps she starts to run again. I’m thinking about throwing in the towel and asking Lionel to repair it.  I’m not sure if this is a motor control issue or a radio controller or radio circuit board issue. I’m bad enough at Electronics but without any type of schematics or block diagrams It’s almost darn impossible!

I’m really almost to embarrassed to post since I never got it all the way fixed. I have another Cc2s engine that runs just fine. I repaired the smoke unit on the whistle and it’s putting out smoke great. Thanks for asking!

I have two of them, one has a bad chuff switch.  I haven't gotten around to fixing it, the chuff switch is buried in the worst possible place, and I'll be taking a LOT of stuff off to get to it!   It works about 80-90% of the time, then it misses a few chuffs.  Very annoying.