I just got a broken peavey windsor for crazy cheap ($50) to use as a poor man jcm 800 platform. Its making an crashing waves sound. That is the best way to explain it haha. Before I start getting voltages/checking component values, I wanted to know if there is be a specific problem that this usually relates to (is it ever that simple?)
-Controls have no effect except master volume, which at zero makes it go away.
-Tubes are good
-Nothing looks burnt/destroyed
-Everything has been cleaned
-Solder joints look good
You guys usually help me out pretty quick and with accuracy so yeah, what do you guys suggest?
http://bestnetworx.com/uploader/files/5 ... EMATIC.pdf
Ocean/Wave sound diagnosis
Moderators: pompeiisneaks, Colossal
Re: Ocean/Wave sound diagnosis
You've probably got bad plate resistors, cold solder joints, intermittent connections. Excellent donor chassis for JCM 800. Rip that PCB out of there and get to work!
I build and repair tube amps. http://amps.monkeymatic.com
Re: Ocean/Wave sound diagnosis
Have you tried playing your amp somewhere other than the beach?
Re: Ocean/Wave sound diagnosis
Blackburn wrote:Have you tried playing your amp somewhere other than the beach?
Ba dum tish
Re: Ocean/Wave sound diagnosis
(deleted)
Last edited by matt h on Fri Mar 27, 2015 6:38 am, edited 1 time in total.
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Smokebreak
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Re: Ocean/Wave sound diagnosis
These amps are very mod-friendly. No need to gut. I did one a few months ago and it came out great with minimal fuss. You can do the LTPI on term strips.
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Stevem
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Re: Ocean/Wave sound diagnosis
Start by process of elimination,which means pulling out the preamp tubes one by one starting with V1 until the problem hopefully stops, than at that point post your findings back to here.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: Ocean/Wave sound diagnosis
Already done, no changes.Stevem wrote:Start by process of elimination,which means pulling out the preamp tubes one by one starting with V1 until the problem hopefully stops, than at that point post your findings back to here.
Sound goes away when I plug directly into the effects loop in. Also, the sound swells when I turn the amp off.
Re: Ocean/Wave sound diagnosis
bad FX loop/jacks?
Last edited by tubeswell on Thu Nov 27, 2014 12:08 am, edited 1 time in total.
He who dies with the most tubes... wins
Re: Ocean/Wave sound diagnosis
(deleted)
Last edited by matt h on Fri Mar 27, 2015 6:55 am, edited 1 time in total.
Re: Ocean/Wave sound diagnosis
Sorry for reviving my dead thread, I haven't had time to even look at this thing in between finals, work, and my main amp going tits up.matt h wrote:Other than pluggin ginto the effects loop--did you followup on any of the other suggestions in this thread? Be specific and comprehensive--each tells us something different.
Anyway, I swapped all the tubes for known working tubes.
No matter what tube I put into V1, I can here noise when I tap on the tube. So I'm thinking something around there is eff'd
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Stevem
- Posts: 5144
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Ocean/Wave sound diagnosis
So do you still have the ocean sound?
Some microphonics is normal in any tube when you tap it, and even more so for V1, but even a preamp tube that is badly microphonic ringing may not make a ocean sound!
On V1 Section A and B, I would change out the plate load resistors and both cathode resistors while you are at it, and also change out the power supply dropping resistor for that node,heck it will cost ya less than 4 bucks and be done with it!
Some microphonics is normal in any tube when you tap it, and even more so for V1, but even a preamp tube that is badly microphonic ringing may not make a ocean sound!
On V1 Section A and B, I would change out the plate load resistors and both cathode resistors while you are at it, and also change out the power supply dropping resistor for that node,heck it will cost ya less than 4 bucks and be done with it!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: Ocean/Wave sound diagnosis
Stevem wrote:So do you still have the ocean sound?
Some microphonics is normal in any tube when you tap it, and even more so for V1, but even a preamp tube that is badly microphonic ringing may not make a ocean sound!
On V1 Section A and B, I would change out the plate load resistors and both cathode resistors while you are at it, and also change out the power supply dropping resistor for that node,heck it will cost ya less than 4 bucks and be done with it!
Still got the ocean sound
I'm not sure what that would accomplish..
Re: Ocean/Wave sound diagnosis
In terms of ridding the amp of the ocean sounds. (Damn that sounds rediculous "ocean sounds haha)