Rojobou
Joined: Jun 07, 2017
Posts: 1
Northern California
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Posted on Jun 09 2017 12:25 AM
I brought home a blackface RI unit yesterday. Dry signal is fine, but no reverb - but, when I knock the chassis about, it makes that "Wipeout intro" sound, so it seems the pan is OK. I do notice the mix knob gives a loud signal at 1, but barely anything at 10. Tone does nothing, dwell does nothing. I plugged in a shorted plug into the switch port and no change.
I apologize if this has already been covered, but I couldn't find a match to my situation in the forum.
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Gilette
Joined: May 04, 2014
Posts: 734
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Posted on Jun 09 2017 04:47 AM
I'd check the 6K6GT (or 6V6GT) and also the continuity of both coils of the output transformer (TR2). You'd have to pull the RCA cables before you measure the output side, and pull the 6K6 when you check the input side. Good luck!
Check tube 1 also. Slight chance one side of it is faulty.
Last edited: Jun 09, 2017 04:53:11
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tubeswell
Joined: Sep 24, 2011
Posts: 1424
Wellington, NZ
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Posted on Jun 24 2017 01:00 AM
Swap out each tube with a known good one to see it its that first.
Then try fresh pan send/return cables.
Report back.
— He who dies with the most tubes... wins
Surf Daddies
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taijiguy
Joined: Mar 27, 2006
Posts: 197
Newington, CT USA
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Posted on Jun 25 2017 08:03 AM
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tahitijack
Joined: Nov 03, 2006
Posts: 690
San Clemente, CA
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Posted on Jun 25 2017 04:43 PM
Welcome to SG 101, damn glad to meet you.
— Happy Sunsets!
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Gilette
Joined: May 04, 2014
Posts: 734
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Posted on Jun 26 2017 12:45 AM
I think Taijiguy was right. I dont think I would have responded either...
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