[Kenwood] Still having problems with a TL-922A blowing one fuse...

[Dutch Maurer WB7DYW]

Ken,
That was my next move *&^%$#@!....

73's Dutch WB7DYW

Success is not a place in time, it is an attitude…


--- On Tue, 6/15/10, Kenneth G. Gordon <kgordon2006 at verizon.net> wrote:

> From: Kenneth G. Gordon <kgordon2006 at verizon.net>
> Subject: Re: [Kenwood] Still having problems with a TL-922A blowing one fuse...
> To: "Dutch Maurer WB7DYW" <wb7dyw at yahoo.com>
> Cc: kenwood at mailman.qth.net
> Date: Tuesday, June 15, 2010, 11:06 AM
> On 15 Jun 2010 at 8:26, Dutch Maurer
> WB7DYW wrote:
> 
> > To start with I want to thank all the emails with a
> lot of great ideas
> > and after checking all the suggestions I still have
> the same problem,
> > looking at the rear of the amp the fuse on the far
> left side blows the
> > second you turn the amp on, the resistance from hot to
> hot at the
> > power plug is less than 1 ohm??? Is this the right
> resistance ????
> 
> Hello, Dutch:
> 
> That doesn't sound correct to me.
> 
> First of all, I would disconnect all of the wiring that
> existed ahead of the 
> transformer, from the transformer, leaving it open, THEN
> test the power cord 
> and the connections up to the open connection.
> 
> The problem may not be in the transformer at all.
> 
> It almost sounds to me as though there is a short, or an
> "almost-a-short" to 
> ground or to the transformer's case at the transformer
> input, or ahead of it, or 
> within the wiring up to the transformer. 
> 
> There may be a carbon-path close-by too.
> 
> What we need to do is to attempt to isolate the problem. In
> order to do that 
> we have to elminate one possibility at a time. 
> 
> So, make sure that the wiring, switches, cables, etc., are
> not part of the 
> problem, THEN carefully examine the transformer.
> 
> Perhaps one of the primary leads is shorted to something
> while the other(s) 
> are not.
> 
> It is rather odd that the left fuse blows consistently, but
> not the right one. This 
> fact, by itself, points (IMHO) to something OTHER THAN the
> transformer.
> 
> I think, if it were me, AFTER I had disconnected the
> transformer and 
> thoroughly tested all of the wiring AHEAD OF the
> transformer, if the problem 
> did NOT occur, I would then remove the transformer, take
> off the end-bells, 
> and test the transformer out of the amp by
> itself....carefully.
> 
> Ken Gordon W7EKB
>