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Wednesday, September 12, 2018

Canada Beomaster 8000: Restoring the power supply board

The Rust-Oleum flat black paint has been applied on the left side of the cabinet as the final treatment to eliminate the rust areas I found.



While the paint is drying I performed the restoration on the Beomaster power supply board.

































While I am working on this board I will change out the thermal protection on the ±15V and +5V regulators.

There is a 22uF, 25V capacitor under the metal cover for the remote control receiver circuit.

































The large axial reservoir capacitors for ±15V and +5V have some rubbery glue that helps secure them in place.  I removed that glue and cleaned the board with alcohol.























...and here is the recap work and the remounted voltage regulators. I use black hot glue to secure the three large, axial reservoir capacitors. I will leave the metal cover off the remote control receiver until I can test that is works okay.





























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