doc wrote:
In the process of momentarily relocating my Jupiter
to another room with a Windows PC (to load the updated
OS) I think I may have applied reverse voltage to the
power connector ... Arghhh!
Symptoms are no response when the power switch is
activated (the fuse is fine).
Time to pack it and ship it to TenTec? ;-(
Wait!
Let us try a more comprehensive diagnosis?
Say, can you hear the power relay clicking when you try to switch on
your Jupiter?
Regarding my circuit diagram of the 538 Jupiter, there is no reverse
polarized diode to protect the power input.
But the mains switch triggers a relay via a switching transistor. Only
when this realy is activated, the main circuits are connected to the
mains power. So you have a good chance, that you only damaged this
switching circuit, not the main transceiver circuits.
73 de Bert, DD5XL
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