Question about Audio Players & Recorders
Cold solder issues - each component is soldered into small
holes on the printed circuit board which in turn connects said component to the
other components. Due to time, heat, use, some solder joints would be cracked
or loose. It is possible that the cold solder is still minimally connected
(hanging by a thread). When the philips receiver turns on heat would be generated which would
be sufficient to further loosen up the solder joint to the point it no longer
provides electrical contact. Jarring the unit creates movement inside enough to
re establish the contact, sometime good enough sometimes not enough.
Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".
Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....
Posted on Jul 14, 2008
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Posted on Jan 02, 2017
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