Prior to Christmas, I was running a lash-up that consisted of two MTH PS3 Diesel Locos (20-20216-1 & 20-20171-1).  I ran them for about a month like this with no issues, everything worked great - until....

I pulled out my MTH Premier Line Canadian Pacific Boxcar Set (the one with all the LED's) and hooked it up to the 2 MTH locos as I was still waiting to receive the Premier Line CP Holiday Train Locomotive.  Yes, the track power was turned off. 

One of the Boxcars shorted out when I re-applied track power.  After this, my PS3 locos wouldn't work.  I deleted them from the DCS controller, reset everyting, cleaned the track etc.. and I still can't get the controller to recognize them.  As a matter of fact, when I put the 2 locos back on the track (and on a test track) they won't even light up anymore. 

My mainline track is fine (as is the test track), I have two other PS3 locos that run fine on the mainline so I've ruled that out.  I'm more concerned about the 2 non-responsive locomotives. 

I'm new to PS3, are their fuses onboard?  Is it possible that when the boxcar shorted out, it fried the 2 locos?  I run an MTH z4000 so I'd think that would be impossible but who knows. 

Any advice/input is greatly appreciated.

Last edited by TrainGuyMcGee
Original Post

 anytime you get a track short and don't turn off the voltage immediately you can blow the boards , especially  the ps3 and 3/2 boards! there is one thing you can try first! run the engine I question one at a time in conventional and see if it will work without tiu in the line. you can also try a factory reset 1W and 5  five Bell with 1/2 second intervals if you get 2 whistle toots the engine reset and then can try it again with dcs ! if it's non responsive in conventional the boards are probably damaged and an asc tech can check what the cost would be approximately to repair!

Alan

 

o gauge  trains ,music ,computer repair windows 7 and 10!

ASC Tech MTH school completed! 2019 !

Last edited by Alan Mancus

Before you give up on them, try do a factory reset with nothing else on the track.

Dan

What happens if you remove the TIU from the circuit and power up?  The locos should come up in conventional.  I have had too many track shorts over the last almost 20 years that I've been running DCS, and haven't had one blow a board yet.

Is there voltage on the track?  A short could have blown fuses in the TIU.  There are no fuses in the locos, and besides, a track short will not cause excessive amperage through locos that are in parallel with the short.

1W and 5 B for reset, not the opposite.  G

MTH Authorized Service Center

Authorized ERR Dealer

Lionel Independent Repair Tech

Virginia Train Collectors Member

Thanks everyone for the advice.  So, the track/TIU are not the issue as my other 2 PS3 loco's still run fine.  The problem has to be with the locos as they won't even respond in conventional on my test track (which works fine). 

If I take the shells off and nothing looks disconnected, I'm guessing it would have to be the PS3 boards.

Best option IMHO, is to let one of the techs here do a proper diagnosis on them, i.e. bench test them with the right tools they have. You need to know what is really broken, then decide what route to take next.  I know 3 guys here in this thread that can do that for you and there are others as well.

My 2cts or so...

Just reading this post makes me disappointed these new toy trains aren't more "goof-proof".  I will later this year get out my one PS3 and many long-stored PS2 diesels and hoping I can just enjoy them.  I am no electrical engineer, I just want to run my trains. My 2 cents.

Rich

trestleking posted:

Just reading this post makes me disappointed these new toy trains aren't more "goof-proof".  I will later this year get out my one PS3 and many long-stored PS2 diesels and hoping I can just enjoy them.  I am no electrical engineer, I just want to run my trains. My 2 cents.

Rich

Accidents happen, sometimes it costs money to fix them.  Improvements will happen over time as the technology matures. It's a good thing we didn't give up on PS1, though my personal experience has been negative, otherwise we wouldn't be here with PS3.  Since the electronics in these devices are so sensitive, it has been recommended MANY times to add TVS and fast blow fuses to all layout power feeds, good advice.  Perhaps it may have saved them ?

To your point though, thinking about all the new Chinese product advances, phones, DVD players, car touch screens etc. I can only imagine what their R&D budgets are compared to Mike Wolfs'. To MTH's credit, if I had to keep running my 1976 Lionel NH with very minimal detail and no horn, well I probably wouldn't be in this hobby again. Back then it cost 250$, quite a lot in those days.  I still have it and enjoy it for what it is, although I just added a horn unit.

Ok, I'm off the soapbox now, cheers

Last edited by MR_P

I add TVS diodes across the PS3 board input inside the locomotive. The closer the protection device is to the electronics we want to protect the better.

The TVS diode is between the two gray wire nuts in this MTH PS# SW1500:

         IMG_4186

 

Lew

 

All photos are mine unless specifically noted otherwise.

 

Operator of the Plywood Empire Route in the Beautiful Berkshires

Growing old is so much more fun than the only alternative.

Attachments

Photos (1)
geysergazer posted:

I add TVS diodes across the PS3 board input inside the locomotive. The closer the protection device is to the electronics we want to protect the better.

The TVS diode is between the two gray wire nuts in this MTH PS# SW1500:

         IMG_4186

 

Amazing to me that the manufacturers aren't including this simple protection in standard design of all engines. Seems like a simple, low-cost additional insurance against failures. 

"Amazing to me that the manufacturers aren't including this simple protection in standard design of all engines. Seems like a simple, low-cost additional insurance against failures. "

Yep, agree 100%

Wish I had a Sunday ticket to the Hampton VA show and address this with them while they are there. Maybe someone can reach out to Mike at York on this very issue ?

Nothing mentioned about the red light illuminating & staying on when you started to set the handle on the Z4000 to 17V. What did the Z-4000 current meter read?

Immediate shutdown. That would be my first clue in protecting the other units.

So did you test the suspect shorted box car on a separate track as well or was it just off the track during the event?

PS2 & 3 circuits are quite reliable but …………probably not after seeing a long term high current short. 

As for the 2 ps3 engines, try pressing read on the remote and see if each one will wake up.

 

Every time I add a brand new PS3, I get engine not on track. Have do it twice to make it work. Also during the first run I loose the headlight. Have to press the remote HDLT to make it work. Lots of other quirks with PS3 lash ups with PS2's. Markers go off at random, trail engine not responding at random.  Stuff no one tells you about. PS3's have been working so far, just seem to have some software bugs.

DCS has become over complicated mixing PS2 & 3's. MTH needs to R&D and fix all the new bugs. Seems the more I load new lash ups and new PS3 engines into DCS, the more I see things not working as they used to.

Don't plan on buying much more, if any at this point.

S.

Last edited by SIRT

Do they have a 2 Rail 3 rail switch is it in the 3Rail position, do they have a DCS/DCC switch is it in the DCS position.  If you apply power on a test track no TIU what does the amp meter read, still no response?

If not possible a PS blew on the PS-3 board.  Weird they all took a hit.  Can send boards to evaluate, may be recoverable.  G

MTH Authorized Service Center

Authorized ERR Dealer

Lionel Independent Repair Tech

Virginia Train Collectors Member

Add Reply

Post
The DCS Forum is sponsored by
OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
330-757-3020

www.ogaugerr.com
×
×
×
×
Link copied to your clipboard.
×
×