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| |-+  Stray Cat 30
| | |-+  Finished build, need to start troubleshooting...
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Author Topic: Finished build, need to start troubleshooting...  (Read 1009 times)
prontold
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« on: July 04, 2013, 08:55:34 PM »

Hey everybody. I recently purchased a Stray Cat 30 kit from ceriatone.net (American distributor, right?) and spent about 40 hours over the past week building it. This was my first amp build so it was a long process and maybe not the best build ever done... Anyway, finally finished the wiring about an hour ago, stuck in some tubes, plugged in to a cab and started to check to see if everything would work. First, the indicator light comes on. Heart starts pounding. 'That's a good sign!'. However, as I'm moving to plug in a guitar and then flip the standby switch, the rectifier tube starts to glow, a crackling sound starts coming out of the speakers, and about 10 seconds later the main fuse blows. I was wondering if anybody here could give any thoughts on where to start looking for trouble, based on that sequence of events...

   Thanks!
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prontold
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« Reply #1 on: July 05, 2013, 02:33:00 PM »

An update: Got a bunch more fuses from Home Depot. Tried only the rectifier and the power tubes. There is arcing inside the rectifier tube (which I know to work fine in an Orange AD15) for a minute or so before the fuse blows. Clearly there is something wrong with the tube rectifier wiring...

Switching to solid state rectifier, the fuse does not blow. However, the amp produces a loud hum regardless of the positions of the controls and the channel plugged into. The hum is louder and bassier on the hi power setting. Must be a grounding issue somewhere...?

I'll be struggling to sort out these issues, so if anybody more experienced has any suggestions, I'd love to hear them!

Oh, one question... Are the control pots supposed to be grounded to the chassis?
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