Gervais, ? The Motorola PA B- has to be switched in order for the amplifier to work (unless you modify it like I do). ?If you do have a "hot" PA be sure to protect it with an isolator and cavity if you are at a populated site.?
Also, RF power input standards are different between GE and Motorola; +23 and +26 dbm, respectively.? Best way to blow an amplifier is over driving it.
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GE PA's can be repaired if you can find the parts and properly troubleshoot it. The hardest part to find may be the power control module. It's either blue or black on the outside with many pins.
So, isolate if it's a (power) transistor(s) or an IC-control problem. Also, the braid or strap between the boards have a habit of opening up. That's near the filter board. ?
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Heat is not so much the big issue here, it's the extreme hot and cold cycling that destroys semi-conductors and other components
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Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
Karl Shoemaker