|
Post by rickenbacker1953 on Jul 2, 2021 9:48:56 GMT -7
I have a Cure . Awhile back My startocaster spent some long hours in the Sun. Shortly after that my neck pup totally quit . I thought it might be a connection when all 3 pickups just quit . So I bought New pots etc . That wasn't the answer . Ended up replacing all three pickups and wellah it works .
But now I get popping and feedback which goes into no signal at all. Then as quick as you can pull a plug it's normal. And remains that way thru out playing . Even if I walk away and flip standby on . I thought maybe bad cord So I purchased a New one .
Any ideas . I have to say my solder job on teh guitar isn't the neatest you'll see . My Tech looked at it and said not bad for your first attempt .
So any guesses? / Dirt?
|
|
|
Post by headshrinker (Marc) on Jul 2, 2021 11:06:41 GMT -7
Does it do it with a different guitar? If not, you can eliminate the amp as a problem. Did you run ground wires to the back of the pots and the switch and then to the ground on the output jack? On a lot of Fender and some other strat pickguards, there is a foil backing on the guard and they use that to ground everything and then run a ground wire from only the switch, if I remember correctly, to the output jack. Those foil connections often get iffy. A little pressure on the pickguard can make the connection, or break it, causing things to work or not. If you did run ground wires, I'd still suspect a bad solder joint that is getting flexed with pressure on the pickguard, causing it to either open or close the circuit.
|
|
|
Post by LT on Jul 2, 2021 11:27:51 GMT -7
Marc is right....determine if it's the guitar or the amp. If it's the guitar, take it to your tech and have them go through all the connections and clean up the solder points. A cold solder joint can cause all kinds of issues. Taking it to your tech will save you $$ in the long run....and it will give you confidence that a pro has fixed it. Plus, while it's in the shop, if there are any upgrades you've wanted to do, buy the part(s) and have the tech do the job.
Let us know the outcome!
|
|
|
Post by rickenbacker1953 on Jul 3, 2021 15:35:35 GMT -7
Marc is right....determine if it's the guitar or the amp. If it's the guitar, take it to your tech and have them go through all the connections and clean up the solder points. A cold solder joint can cause all kinds of issues. Taking it to your tech will save you $$ in the long run....and it will give you confidence that a pro has fixed it. Plus, while it's in the shop, if there are any upgrades you've wanted to do, buy the part(s) and have the tech do the job. Let us know the outcome! Thanks It's the amp . I unplugged the guitar cord and turned on the amp. Let it warm up for a minute. Soon as I flipped standby it hummed loud like I had the volume cracked to full. Which I didn't . It lasted not even 10 seconds . So is that my power tube ? Short of sending this somewhere I'm going to have to fix it myself. We have no such thing as an Amp tech in 100 miles . No music Stores or anything that I know of for 100 miles . The guy who I go to for tech stuff has pretty much showed me how to work on my guitar myself. Because he has a fulltime job . I know jack about amps . Plus I don't want to kill myself . But the cure is self biasing correct ? So where do I start ? Power tubes . That's usually what goes bad ? Or is it pre-amp ? As you can see I don't know anything . I haven't tried another guitar since it's obvious it's not that . My newest cord is from Spectraflex : Butttt it's pretty obvious when it does it with nothing plugged in . Correct?
|
|
|
Post by Jaguarguy (Mike) on Jul 3, 2021 15:48:49 GMT -7
|
|
|
Post by headshrinker (Marc) on Jul 3, 2021 16:12:49 GMT -7
Guessing, I would say an arching rectifier or a power tube. I would take off the back panel so I could see the tubes, take the covers off of the preamp tubes. Plug it in and turn it on and watch the tubes. Look for anything unusual, a tube arching, getting real bright then dimming, going cherry red after a bit, etc. Though bad tubes don't always look unusual. If it was me, I'd get a new rectifier, a new set of power tubes and at least one 12AX7. Put in a new rectifier, see if it does it. No change, put the old one back. Fixes it, you're done. You now have some spares which you will eventually need. Next if no change, a new set of power tubes, same procedure. If that's not it, then pull the first preamp tube and put in the spare. If no change, old one back in and on to the next one. If that doesn't solve it, it's likely not tubes. I'd bet it is though.
|
|
|
Post by rickenbacker1953 on Jul 4, 2021 6:00:00 GMT -7
Guessing, I would say an arching rectifier or a power tube. I would take off the back panel so I could see the tubes, take the covers off of the preamp tubes. Plug it in and turn it on and watch the tubes. Look for anything unusual, a tube arching, getting real bright then dimming, going cherry red after a bit, etc. Though bad tubes don't always look unusual. If it was me, I'd get a new rectifier, a new set of power tubes and at least one 12AX7. Put in a new rectifier, see if it does it. No change, put the old one back. Fixes it, you're done. You now have some spares which you will eventually need. Next if no change, a new set of power tubes, same procedure. If that's not it, then pull the first preamp tube and put in the spare. If no change, old one back in and on to the next one. If that doesn't solve it, it's likely not tubes. I'd bet it is though. Thanks
|
|
|
Post by LT on Jul 4, 2021 8:54:46 GMT -7
If you go through the tube troubleshooting and it's still acting up, contact the factory. They have an excellent repair team and will have you up and running....plus you'll get peace of mind that it got a clean bill of health, especially important if you bought the amp used.
Keep us informed!
|
|
|
Post by rickenbacker1953 on Jul 7, 2021 9:34:21 GMT -7
Thanks everyone : It appears to be my first Power tube I can see it arching immediately when I first flip on standby . If I turn on the amp without engaging standby, letting it just warm up it doesn't do it . Plus once it starts it sounds perfectly ok . Yet both power tubes are doing the cherry thing Doc points out also . So I need to replace both I would think. Rectifier must be ok since Doc said that flipping on standby would blow a fuse . It hasn't nor has it tripped by wall breaker . PS Thought there was a place on the Z Webpage where you could get tube sets ? Is this it ?? www.thetubestore.com/power-tubes/6v6-tube-types
|
|
|
Post by LT on Jul 7, 2021 10:57:07 GMT -7
Thanks everyone : It appears to be my first Power tube I can see it arching immediately when I first flip on standby . If I turn on the amp without engaging standby, letting it just warm up it doesn't do it . Plus once it starts it sounds perfectly ok . Yet both power tubes are doing the cherry thing Doc points out also . So I need to replace both I would think. Rectifier must be ok since Doc said that flipping on standby would blow a fuse . It hasn't nor has it tripped by wall breaker . PS Thought there was a place on the Z Webpage where you could get tube sets ? Is this it ?? www.thetubestore.com/power-tubes/6v6-tube-typesYes that's the store....it's a good one to do business with.
|
|
|
Post by premiumplus (Dave) on Jul 7, 2021 12:11:54 GMT -7
Thanks everyone : It appears to be my first Power tube I can see it arching immediately when I first flip on standby . If I turn on the amp without engaging standby, letting it just warm up it doesn't do it . Plus once it starts it sounds perfectly ok . Yet both power tubes are doing the cherry thing Doc points out also . So I need to replace both I would think. Rectifier must be ok since Doc said that flipping on standby would blow a fuse . It hasn't nor has it tripped by wall breaker . PS Thought there was a place on the Z Webpage where you could get tube sets ? Is this it ?? www.thetubestore.com/power-tubes/6v6-tube-typesI'm sure it doesn't need to be said, but I'll say it anyway...please don't run the amp with red-plating tubes. It'll damage resistors in the output tube circuits.
|
|
|
Post by rickenbacker1953 on Jul 7, 2021 13:34:32 GMT -7
Thanks everyone : It appears to be my first Power tube I can see it arching immediately when I first flip on standby . If I turn on the amp without engaging standby, letting it just warm up it doesn't do it . Plus once it starts it sounds perfectly ok . Yet both power tubes are doing the cherry thing Doc points out also . So I need to replace both I would think. Rectifier must be ok since Doc said that flipping on standby would blow a fuse . It hasn't nor has it tripped by wall breaker . PS Thought there was a place on the Z Webpage where you could get tube sets ? Is this it ?? www.thetubestore.com/power-tubes/6v6-tube-typesI'm sure it doesn't need to be said, but I'll say it anyway...please don't run the amp with red-plating tubes. It'll damage resistors in the output tube circuits. AMP package is OUT of Stock . I've had just about every amp Z makes . But the cure and the Caz are the only 2 I've not swapped out before needing any tubes . Hopefully I won't need the other tubes. It appears the only item they have in-stock are the power tubes I need . Which I opted for matched set
|
|
|
Post by rickenbacker1953 on Jul 10, 2021 11:49:02 GMT -7
Thanks again guys for all the help : Got the tubes faster then I thought I would . That was definitely the issue . I forgot to ask if I could kill myself . So I watched the Video Doc made again . Obviously I made it out alive Thanks All
|
|