MTH Engine keeps restarting

You ought to post this on the DCS forum.

OK, will post it there.  Since this happens in conventional as well, I was torn!

Since sound goes on for 10 seconds the battery is fine. Sounds like a broken pickup wire to me.

Also Possible track problems.

With a meter, check ohms between the 2 (or more) pickup rollers. It should read very low numbers.

If that passes, Switch to Volts.

Then Hold one lead on an outside rail and run the other lead down the middle rail. Power should read consistent, and drop outs are bad track, fix them.

Repeat holding the lead on the center rail and sliding the outer rails.

If none of these problems if found, The engine will have to be opened to check the power feed to the boards from the Pickups, you could have a wire broken inside the insulation, that will connect for a while and then open making the engine shut down, then power back up as it hits bumps.

To test, Measure ohms, connect your meter to the power wire at the board and at the pickup, wiggle the wires and see if the reading in changing. and drop outs are a bad wire. Replace it.

Naturally, going inside the engine poses risks, you may want to send it for repair instead.

Clean the wheels and pickup rollers on the engine, I've had the same problem when they are dirty.  The pickup rollers may have corrosion on them, you may have to use sandpaper to clean them.   

Larry

Sounds like an internal issue more than anything else. It is always good to clean everything up, but when the problem still occurs, it may be internal. If that is the case, I would contact MTH and ask for their advice. If you are willing to part with the locomotive for a few weeks and give them the opportunity to address the issue(s), I am quite sure they can fix/repair what is wrong. That is, if you have exhausted all other efforts to try and resolve the matter.

Hope you get her running right soon.

Pete

Note that this loco is a Spawn of E-bay

"Spawn of E-Bay". Yeah, that's got to be the problem.

Before open loco surgery, I would try a postwar transformer to run the loco, some Protosounds and PS-2 locos don't like the CW transformers or the small Z series MTH transformers. Give the 1033 or LW transformer a try first. 

LIke Larry said, try cleaning the wheels and rollers; I would use Scotchbrite (nonmetallic) rather than sandpaper or emery cloth. Do NOT use steel wool.

Thanks for all the info guys.  So far its still occurring, but here is something new I noticed. If I turn off sound... it runs fine in both DCS and conventional. When I turn sound back on the speaker garbles and the engine turns off. I opened her up but didn't notice any bad connections.