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Quick Question About RCA Input
Quick Question About RCA Input
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Old 2nd November 2008, 03:47 AM   #1
David E H is offline David E H  United States
diyAudio Member
Join Date: Nov 2008
Default Quick Question About RCA Input

Hopefully I don't waste too much of your time with this.

I have a Silvertone chassis I'm working on restoring. Works but sounds crappy. It has and RCA input that's breaking and I use the amp for guitar so I decided to change it out to a 1/4 in. After desoldering/soldering I no longer get an input, just some extra fuzz/buzz. (cold solder maybe?)

Anything I should consider that could have gone wrong or just back to troubleshooting? Any tips on soldering 2 resistors to one terminal?

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Old 2nd November 2008, 01:38 PM   #2
Robert McLean is offline Robert McLean  Canada
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Join Date: May 2005
Location: Stittsville, Ontario, Canada
The "just back to troubleshooting" is probably what it is going to take, but, I can think of two possibilities.

1) How was the RCA connector connected to ground. Was it through the mechanical fastening of the connector to the chassis, or an actual wire ? Same question for the new 1/4 inch connector. If the RCA connector was grounded through its body, but the 1/4 inch is isolated and needs an actual wire you may be missing a connection there.
2) Is the 1/4 inch connector the type that switches opens one circuit and closes the other when you push in the plug ? If so, maybe you have wired up to the wrong one.

For 2 resistors in one terminal that is not large enough, you can put the resistors bodies side by side with the leads of one straight out, and wrap one of the leads of the other around the other for a few turns, solder it, then cut off the excess. Use the lead that is left sticking straight out.
Robert McLean
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Old 2nd November 2008, 10:20 PM   #3
David E H is offline David E H  United States
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Join Date: Nov 2008
Hey thanks for the reply. I switched which sides of the jack that I was connecting everything to and it is back up and running again.
So do jacks have a sort of "ground polarity"?
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Old 4th November 2008, 07:00 PM   #4
Osprey is offline Osprey  United States
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Join Date: Jun 2008
Yes, if you connect the signal to ground you no longer have a signal.javascript:smilie('')
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