The pins that stick through the system board can be gripped with hemostats and wiggled sideways while still plugged in. This will wipe off any oxide that has accumulated and will eliminate any bad connections. Doing this periodically on a radio with a long commute might save a trip.
I also like to wiggle the loops that connect the receiver front end to the squelch board, even though they are silver plated. Just makes me feel better about those connections when they get black. I have never traced a problem back to these loops, but have had several problems due to bad connections between the receiver modules and the system board. A mobile exciter can be exercised the same way. A base station exciter will let you pull the connector up without removing it and slip it up and down several times to wipe the connections. 73 - Jim W5ZIT --- On Thu, 10/30/08, Gran Clark <[EMAIL PROTECTED]> wrote: From: Gran Clark <[EMAIL PROTECTED]> Subject: [Repeater-Builder] Mastr II internal connector reliability? To: [email protected] Date: Thursday, October 30, 2008, 10:22 AM Hi All In the past couple of years I have had to make four long trips (360 round trip mi each) to reseat connector problems in the GE Mastr II and MVP radios. The environment is ideal with air conditioning in the low desert South West. The fault has always been on a contact carrying less than a mA (dry). Other than wiring around the open connection or just re-seating the connectors a half dozen times does anyone have a better suggestion? If the pins are silver plated would moth balls be in order? Remember the moth balls in the Centralab switch boxes to prevent oxidation? Gran K6RIF
