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Are all 5V PS-2 boards the same?

I recently acquired a Rail King F-3 in running condition.  It has a tether that appears to have only has three wires active in it.

This is another question related to my old PS-2 Alco PA which has a blown amplifier (a new amplifier is on the way, but I am at the moment questioning my ability to de-solder the old amplifier without damaging the board).

If I can swap the board from the F-3 into the Alco, then load the Alco's sound file into it, that will solve the Alco's problem.  I can attempt to replace the amplifier in the board I extract for other use (I have a Fairbanks Morse FM that is totally dead).

Are there any differences I should know about?

Thank you all in advance.

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I pull the four and eight pin socket housings from the board next to the amp, clip the amp off from the pins (rocking back and forth will break it off), extract each pin and clean out the holes with a solder wick or desoldering tool.  Note that the lettering on the amp faces in when reinstalling.

You can load a the new sound file into the repaired board.

Last edited by Jon G
@RAK posted:

In order to removed the housings, I assume that the top board must be separated from the bottom board?

If so, how does one do it?  It does not look like they simply plug together...

You don't separate the boards to remove the connectors- just use temperature controlled hot air tool on a very low setting to soften the connector socket housings and pull them off the pins.

If you have to separate the boards, they are soldered and then had extra components added by hand soldering so removing all that is a royal pain.

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