[Johnson] Invader 2000 fuse blows

[Gary Schafer]

do the filter caps in the supply get warm?  Could be very leaky filter caps.

73
Gary  K4FMX

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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