erock
New Member
Posts: 5 
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Post by erock on Aug 9, 2015 14:40:16 GMT -7
Hi everyone,
I've had my CG for a little while, about 5-6 mos. this morning when I plugged in I wasn't getting any sound. After checking cables and such, I checked the tubes.
The big tube on the far left (looking from the back) is not glowing. It is the biggest tube and I'm not sure which one it is I may need to replace.
I wanted to get your input on what my best course of action. I could re-tube the entire thing but I didn't want to spend that right now.
Thanks for the help.
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Post by Russell B on Aug 9, 2015 14:48:50 GMT -7
That's the rectifier. You'll just need to replace that one.
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Post by Russell B on Aug 9, 2015 14:52:01 GMT -7
On second thought, if the rectifier tube is out, nothing should be working.
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erock
New Member
Posts: 5
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Post by erock on Aug 9, 2015 14:54:22 GMT -7
That's the rectifier. You'll just need to replace that one. Thanks! Is there a recommended brand for the 5y3? |
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erock
New Member
Posts: 5
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Post by erock on Aug 9, 2015 16:08:34 GMT -7
Fuses?
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Post by zed on Aug 9, 2015 16:50:11 GMT -7
Yes, rectifier tube if you're blowing fuses.
Get Slo-blow fuses, available at most any hardware stores, I got mine at Lowes.
Check what amperage you need, I think that they're 1 amp.
NOS tube for the recifier, I'm north of the border, I get my tubes at the Tubestore.
They have a recommended set for the Ghia, that's what I picked up.
My Ghia was second hand and previously gigged regularly.
It had a lot of hours on the tubes, so I changed out the whole set.
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Post by simpleton on Aug 9, 2015 16:51:03 GMT -7
So you are saying the jewel light comes on but no sound comes out when everything is plugged in? Speaker cable connection maybe? If fuses were bad nothing would power up. You tried a different guitar cable?
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Post by Jaguarguy (Mike) on Aug 9, 2015 17:28:44 GMT -7
Welcome to the Forum erock! Here is a link to Doc's trouble shooting page. Read it and if you feel comfortable try to follow it. Be careful,though - there's enough voltage there to kill you if you touch the wrong thing.  That can really ruin you day!!! |
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mazme
Junior Member
Posts: 67
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Post by mazme on Aug 9, 2015 17:44:25 GMT -7
Welcome erock, I'm the guy on FB who suggested you come to this site. Great bunch of guys, with a lot of knowledge about Dr Z amps. I hope you find the help you need here and get your problem sorted out, and again Welcome to you.
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erock
New Member
Posts: 5
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Post by erock on Aug 9, 2015 18:11:49 GMT -7
I didn't check the fuses. That will be the first step. I'll pick up a rectifier just as a back up.
I tried the amp with multiple cables and guitars.
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Post by zed on Aug 9, 2015 18:20:44 GMT -7
The jewel light won't light up if the fuse is gone.
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Post by John on Aug 9, 2015 18:27:21 GMT -7
Welcome erock, I'm the guy on FB who suggested you come to this site. Great bunch of guys, with a lot of knowledge about Dr Z amps. I hope you find the help you need here and get your problem sorted out, and again Welcome to you. Tubes can be quirky... When it comes to: 1) Fuses 2) Power tubes 3) Rec tube When any one of the above burns up or fries....it can take the others with it. So be sure to check all three. Most of the time, the smaller preamp tubes don't get damaged in these situations. |
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Post by j4gitr (John) on Aug 9, 2015 20:06:26 GMT -7
Welcome to the Forum erock! Here is a link to Doc's trouble shooting page. Read it and if you feel comfortable try to follow it. Be careful,though - there's enough voltage there to kill you if you touch the wrong thing. That can really ruin you day!!! +1. Very Good advice. I didn't see the link, so just in case www.drzamps.com/trouble_shooting.html |
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erock
New Member
Posts: 5
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Post by erock on Aug 19, 2015 15:39:41 GMT -7
I wanted to follow up. It was the rectifier tube. I replaced it and we're good to go.
Thanks for all the help!
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Post by simpleton on Aug 20, 2015 14:32:40 GMT -7
I wanted to follow up. It was the rectifier tube. I replaced it and we're good to go. Thanks for all the help! Nice! It's always nice to have known good tubes on hand so the lag in " O NO  my baby". And "HELL YEAH  Back on top of the tone pile" isn't as long. |
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my baby". And "HELL YEAH 
Back on top of the tone pile" isn't as long. 
