Follow Up Icom Marine Radio

Hi All this is a follow up to the ICOM Marine Radio IC-M45. Overall it was a success! Another boat anchor saved, total parts cost under $5.

Replaced the reverse protection diode 1N5408 and the audio amp LA4425 and were up and running again! Below are some picture of the repair.

here is a link to the service manual http://www.g4ztd.info/pdfs/ic-m45_sm.pdf . I had to look up a replacement part number for the diode since there where no markings.

New audio amp is on the left corner 

New LA4425, don't forget the heat sink clamp! 

Front shot before cleaning 

Careful with the flat cable, the glue holding the plastic stiffener tends to dry out.


Disassembled ready to clean 

Replaced reverse protection diode and repaired cooked trace

Bad Diode, man his is old! Who make this package anymore?

 Assembled and cleaned, looks good!




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