[ICOM] ICOM IC-2100 vs 2100H

[D C _Mac_ Macdonald]

Thank you, Guillermo! 
 
I don't know why I didn't think of that!  I just checked the protection diode as you suggested.  It reads about .51 Volts  on the diode check function of my Fluke 77 digital multimeter. 
 
It would appear that the troubles are much more minimal than I had feared.  As I have previously posted, I have an actual Icom Service Manual that should arrive by the middle of next week. 
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk hotmail com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
* * * * * * * * * * * 
 

 
> Date: Wed, 17 Sep 2014 22:28:44 -0300
> From: nagato at madryndigital.com.ar
> To: icom at mailman.qth.net
> Subject: Re: [ICOM] ICOM IC-2100 vs 2100H
> 
> 	Ok, it could be so; nevertheless, if you reverse probe leads, it 
> "should" measure (protection) diode voltage threshold, when everything 
> is still ok.
> 
> Regards
> Guillermo - LU5WE.
> 
> 
> El 17/09/14 a las 10:58, D C _Mac_ Macdonald escibió:
> > Well, I don't have a service manual YET, but I did score one on eBay
> > about 15 minutes ago. It should arrive here in about a week.
> >
> > I guess I'll go from there!
> >
> > There is NO continuity between the plus lead and chassis, so I expect
> > that either the main trace may be fried or worse damage has
> > occurred.
> >
> > Thanks again, everyone who provided info.
> >
> > 73 - Mac, K2GKK/5 > >
> >
> >> To: icom at mailman.qth.net Date: Wed, 17 Sep 2014 08:47:40 -0400
> >> From: ma.locksmith at juno.com Subject: Re: [ICOM] ICOM IC-2100 vs
> >> 2100H
> >>
> >> Now that you have the service manual, you can see there IS a diode,
> >> and it's on the board.
> >>
> >> If the input is not shorted, is it open?  If you measure the diode
> >> on the board, is it open, shorted, or good?
> >>
> >> Ed K1ZOK
> >>
> >> On Tue, 16 Sep 2014 13:34:58 -0500 D C _Mac_ Macdonald
> >> <k2gkk at hotmail.com> writes:
> >>> I don't know if Icom had included a reverse protection diode.
> >>> The input line is NOT shorted but I really suspect that reverse
> >>> polarity was applied WITHOUT a fused line.
> >>>
> >>> I guess the first thing to do is try to find a service manual
> >>> for the radio.
> >>>
> >>> Thanks to those who have replied so far.
> >>>
> >>> * * * * * * * * * * * * > >>> 73 - Mac, K2GKK/5