[Johnson] Invader 2000 fuse blows

[Ray, W2EC]

I had a problem with my Invader 2000 once where the feedthru bypass cap 
in the back panel power jack had broken down and was leaking. It was 
causing the screen supply to blow. Tough to find where the short was as 
the jack looked normal, the short was inside the jack itself.

Good luck & 73, Ray W2EC

George wrote:

> Hi all,
> 
> Before I end up with no hair left (from pulling it out one at a time) I
> could use some help.
> 
> I have an Invader 2000 that blows the low voltage fuse.  With the high
> voltage supply disconnected and the transmitter in standby, the fuse will
> blow after about 10 minutes of warmup.  I had a standard 5R4 in the power
> supply and it would arc over just before the fuse blew.  I changed the 5R4
> to a military grade and it no longer arcs but the fuse still blows.
> 
> If I remove the 5R4 the fuse doesn't blow.  If I remove the 5U4 and leave
> the 5R4 in, the fuse doesn't blow.  With both tubes in, it blows.
> 
> Any suggestions?
> 
> Thanks
> 
> George, NY2O
> 
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