[Yaesu] PB-1076B Smoked

[Robert Wood]

All,

 

I turned on my FT-101B this evening and tried to tune up.  I started smelling
smoke, so I turned off the heater switch off quickly.  Given I started seeing
smoke, I unplugged the unit quickly.  After dinner, I opened up the bottom and
discovered the PB-1076B card burned several resistors, and cooked several wires
around the resistors.  Resistors R1, R4 and R5 are cooked.  I plan to get some
replacement resistors and change them out.  Any thoughts as to what may have
happened?  If I replace them, will it happen again?  I appreciate any insight to
the issue.

 

Thanks,

 

WB5MWL

Robert