[Yaesu] FT 1000D Audio Receive Problem

[leo]

What is wrong with my rig?
 
I cannot describe how this happened.while I was listening to some QSO,
something inside burnt and suddenly the audio started to sound awkward
(non-readable) accompanied by a long and continuous "pprrrrrtt" sound.
Fortunately with the headphones my receive is normal. 
 
What parts should be replaced?  Anyone who can give me a part number and
a supplier in the USA? 


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