Hi Bob,
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The driver pcb is not too difficult to get out and you will see the signs if it was the cause of the smoke. If your new driver board has the new resistor fitted you're good to go. But you will have to go through the adjustment procedure contained in the manual. I've replaced 2 and they're still working fine
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Take pictures before the disassembly, it really helps.
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73
Geoff
VK3ZGW
