[TenTec] How Much Damage From Reversed Polarity?

[doc]

Finally have a little time to troubleshoot.  No
clicking relay, just no response at all.

There is no visible damage to anything that I can
see on the little circuit board to which the power
connector is soldered.  No smell of something
burned either.

I am looking at the schematic 4-32 in the Op Manual.

Any suggestions as to which device(s) is(are) most
likely to have failed, please?

Thanks!  doc

doc wrote:
> My schedule (12+ hours days through Wed.) will keep
> me from cracking the box to do a sight and smell
> assessment of the potential damage.
> 
> I sure appreciate the helpful hints from so many and
> will report back to the list what I discover later in
> the week.
> 
> 73, doc
> 
> Bert Braun, DD5XL wrote:
> 
>> 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


-- 
Thanks! & 73, doc kd4e
West Central Florida
Drake, Heathkit, Kenwood, TenTec, Yaesu
Radio Life: http://www.gospelcom.net/twr/
Linux-Incompatible hardware is defective!
USA Pres. Election 2004: http://www.rnc.org/
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