MRC AH501 Pure Power

The bolts were added on by the previous owner. Open up the case and you will be able to  remove them.

Larry

TrainLarry posted:

The bolts were added on by the previous owner. Open up the case and you will be able to  remove them.

 

Larry

I will endeavor to do that. I need to find out how it's done.

Thanks for the reply!

Some of those transformer cases have unusual mounting screws that require a special tool to remove. The idea is "There are no user serviceable parts inside". 

Tinplate Art posted:

Some of those transformer cases have unusual mounting screws that require a special tool to remove. The idea is "There are no user serviceable parts inside". 

I was able to shine a light into the 4 recessed holes that are on the bottom of the case. They look to be Phillips head. I just need to go get one now that’s long enough to reach the heads and try not to enlarge the grooves in the heads. 
Previous owner did it to put the mounting bolts in. 

Thanks!

You might try Horrible Freight as they sell many tools for removing "tamper-proof" fasteners.

Rick

They’re Phillips screws IIRC.  Pull the throttle handle straight up to remove it, then take the screws out. The top will lift off and you can get the bolts out.

I use the AH601 Pure Power Dual for train operation, AH101 for accessories and an AH800 for lighting accessories.  All rock solid.

I've had nothing but good experiences with the AH601 with sound boards and effects.  I run conventional with sounds on a conventional multi-block set up.

Success. Since I’m lousy at remembering where I last laid my tools, a trip to Lowe’s today for a long Philips head solved the issue. The bent bolts were a challenge but I got them out. The seller told me the bolts were bent by shipping. Who knows? Anyway it’s done!

This transformer is now working well for all of my engines, MTH original protosound as well. Seems to run the Lionel and Williams ok, too. As someone noted the horn button tends to slow most units down a bit, but it’s ok by me.

This is a heavy, super duty unit.

Be careful when pushing the buttons on these units. They don't use a conventional pushbutton switch. They have copper tabs soldered to a board under those round red buttons. Because they don't click or have a positive stop, like a real switch, and they are fairly stiff, it is possible to overstress them and break them. It has happened with both my pure power and my PP dual.

Thanks! Yes, they are a bit on the stiff side👍