Mth Trolley Repair Manual
I’m looking for opinions/advice with problems on a couple of MTH engines my son owns. First is a Daylight with Locosounds that Santa brought him 4 years ago. The sound (chugging) and synchronized smoking has gradually gotten slower and slower over the last several months to the point now that it barely makes any sound or puffing (It will shoot out the smoke if it’s in neutral just not when moving). The 2nd is a CNW Protosound diesel that he bought earlier this year. The sound on this has also stopped. Although if you leave it in neutral for a while you can start to hear muffled crew talk. Both engines still run fine forward, neutral, reverse.
Mth Trolley Video
The problems are with the sound. Does it sound like both of these need to go to the repair shop or is there anything I can look at first?

He also has a MTH trolley w/Protosounds that is about 3 years old that just needed to be “reprogrammed”. It cost more than half of the original price to repair it. One guy told me the fix to the Daylight locosound engine would require him to upgrade the sound system. He’s 12 now and saves all of his money to buy trains. Overall it seems that to have sound problems with 3 engines that are 4 years old and less (he only owns 4 so it’s 3 out of 4) is less than stellar performance.
I’m starting to think that it’s throwing good money after bad. Maybe it’s that these aren’t the “premier” line?
Or that they’re locosounds and protosounds and the protosounds 2.0 are more reliable? Are these problems typical with MTH?
Mth Trolley Red Arrow Lines
Would Lionel be better? Thanks in advance for any thoughts and letting me vent. I have one Lionel TMCC locomotive. It has been back to lionel one time because it stopped chuffing.
Mth Trolley Repair Manuals
I have had three protosound 2.0 engines for 2 years. No problems with operation yet. The experience of many others has convinced my to stay away from PS1 engines.

If you can turn the sound off, another option is to get a $100 railsounds car from Lionel. One car and all your engines can have sound (2 cars if you run diesel and steam). Then you can spend you money buying conventional locos for much less. Instead of fixing the old engines you might also consider the MTH RTR sets. You can often get them for just under $300 and you get a complete new train, some track, and a transformer. Another option is to 'upgrade' to PS2 but you probably need a dealer to do it.