Palomar 300a problem.

[SMILEX2692002]

I have a failed component in my 300a. The component is circular in shape, red in color. It connects from the bridge between the tune and band control and goes over to the 4 6lf6 tubes. The component burned as you can see in the pictures. From what I can still see the component reads erie 402z 3kv.

My 300a will still turn on and everything is working except it has no power out with the amp on operate. The keying relays still function. On stand by power still passes through the amp as it should. On inspection of the bottom side I see no faulty components. I also checked my tubes and they were not damaged.
If I can find a replacement component it looks like it is an easy fix.
If you know what this part is please help.

 

[SMILEX2692002]

Here is a picture I found off the net. His looks like it has a capacitor in the location where mine has the failed part.

 

[fodendaf]

I looked up a capacitor cheat sheet. I think its 4000pf doorknob. There's a few on ebay rated to 20kv at the moment. Anything over 3kv should be fine. I could be wrong about the code as I don't know what the z is for so hopefully someone else will chime in.

 

[SMILEX2692002]

4nf -20% +80% @ 3kv

Would this work?
2 CRL Gap-Cap .004uf 3KV 3000V Ceramic Capacitors Centralab | eBay

 

[SMILEX2692002]

I believe I found the correct part.
RF parts has it. It is part # .004-3KV-HDA
I found it on this website http://www.rfparts.com/pdf_docs/037 Capacitors.pdf
The part is located on page # 40 on the top left corner.

 

[Crusher]

The part is called the DC blocking cap. It allows RF to pass, but doesn't allow the DC plate voltage to pass.

 

[fodendaf]

that part on rfparts has max plate volts of 1.8kv. i'm not sure is that ok but it probably is. the ebay link seems fine.

 

[SMILEX2692002]

Would this work?
2 CRL Gap-Cap .004uf 3KV 3000V Ceramic Capacitors Centralab | eBay

I ordered the part from the Ebay seller. Hope it works out.

 

[SMILEX2692002]

I ordered the part from the Ebay seller. Hope it works out.

All fixed. Thanks for all the help.
Anybody know what the going price is for a 6lf6 tube?

 

[reddog45]

I think around 25-35 dollars on most auction sites.


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