[1000mp] ext spkr jack and 1000mp original

[Milt, N5IA]

Yuri,

Here is the procedure.  Good luck.  Milt, N5IA
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I have had to make the repair of intermittent audio on one half of the 1/8"
audio jack on the front panel of the MP.  This is the procedure that I have
developed which has been used on two MP's.

Take the top and bottom covers off the MP.

There are three screws along the front topside of the radio which hold the
top of the front panel to the chassis.  Remove these three screws.

Then there are two screws, one on each lower front side of the radio which
must be LOOSENED about 1 turn, or as needed, to free the swing open brackets
holding the front panel to the chassis at the bottom.

Once these two screws are loosened, you may tilt open the front panel
towards you, being careful to release a couple of wires that might be
inserted in holders.

The 1/8" audio jack is located on a small PCB that is somewhat permanently
mounted to the front panel.  I never could figure out how to get it out so I
devised the following method of curing the problem; which is a broken solder
joint where the jack is soldered to the PCB.

The three solder joints on the PCB where the jack attaches are visible down
inside a small opening.  Knowing the joints would not require a lot of heat
to melt the existing solder and add a bit more new solder to the joint, I
added a long piece of bare, solid # 12  copper wire to the end of my
soldering station tip point.

I did this by making the # 12 wire long enough to wrap around the body of
the heating element of the soldering pencil for mechanical stability AND to
induce more heat more quickly.  The # 12 wire continued to wrap downward
toward the tip, wrapping around the tip a couple of times before extending
approximately one inch beyond the tip.  You choose the lenth of extension
according to your solder tip and how far you perceive you need to lenthen
the tip to reach the three solder joints.

As the wire heated up the first time, I tinned it well for about 1/4" from
the tip, to the tip.  I then allowed the tip to hold a small amount of
solder and carefully lowered the tip into the small opening and touched it
to the first of the three solder points.  Allow enough time to totally heat
the joint and allow the new solder to itegrate with the original solder.  I
repeated this procedure for each of the two remaining joints.  Job done!
The intermittent audio has NOT returned.

Put the radio back together by reversing the procedure of taking all the
screws out, being careful to NOT pinch any of the wires as you tilt the
front panel back into place.

I believe you will find this a relatively easy method to repair a common
failure which is NOT readily accessible.

Milt, N5IA