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Re: Drake TR-4CW no receive then plate current oscillates then rises and blows fuse #TR4-c


 

Interesting. ?This would be the first time I¡¯ve seen this happen without it being that cap. ?Check them with an ohmmeter. ?They should not be shorted.

Remove the finals, replace R192 and the fuse and see what happens. ?There¡¯s a chance that there¡¯s something else bad on the +250 line.

Steve Wedge, W1ES

Time flies like an arrow. Fruit flies like a banana.




On Tue, Feb 25, 2025 at 5:03 PM, Mark N2DMI via groups.io <markkiziuk1@...> wrote:
So you're guessing one of the caps in the big can went bad and took out the R192 (27 ohm) resistor that goes to the coil of K1? Interesting because the can that's in there now came from Hayseed. I thought they were more reliable?
Mark

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