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| Amp Central Station Amps, tubes, speakers & everything AMP related. |
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#1 (permalink) |
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Tele-Meister
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What am I missing?
Last night I turned on my faithful Delta Blues... and nothing. No hum, no sound, nothing. All the tubes lit up, the power light worked, tubes got warm, but nothing. I looked in the back and one tube was just a few degrees kiltered, I straightened it but still nothing.
Ideas? Cassidy |
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#5 (permalink) |
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Poster Extraordinaire
Join Date: Jan 2004
Location: Sioux Falls, SD
Posts: 6,654
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How old are the tubes? Just because they light up doesn't mean they are good. You might have had a tube go bad and take out one of the fuses inside. Try replacing the fuse and putting in some known good tubes.
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#6 (permalink) |
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Tele-Meister
Join Date: Nov 2003
Location: North Louisiana around Many
Posts: 316
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Please Chime in Cassidy and let us Know "The Rest Of the Story"
The fact that you got no sound at all means the problem is the the output section---output transformer---power tubes---if the output section was working you would be at least be getting some operational noise/humm. I would say check to power tubes first. If you have some known good additional 6L6's--try them. Second I would check the speaker wire/hookup. Platefire
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On the Right Track now Baby<>< |
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#7 (permalink) |
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Tele-Meister
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Okay, first it's not the volume control.
Also it's not the speaker connection, I just looked at it again and it's solid. But that's really all I looked at (had to shoot darts tonight, just got home and won't tackle it after a few beers). Is there a fuse in the Delta Blues? Tomorrow I'll look through my tubes, not sure if I have any that'll work. Can't I damage it by leaving it on with no speaker load? Cassidy |
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#8 (permalink) | |
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Poster Extraordinaire
Join Date: Mar 2005
Location: Lost Angeles and Orange County
Posts: 7,128
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Quote:
1. Check your guitar cable. 2. Check your amp's input jack. 3. Check your guitars output jack. 4. Check both the speaker's terminals, as well as the 1/4" speaker jack to make sure the connection is good (may "look" OK, so look closely). If you blew a mains fuse there would be no lit up tubes (no lit up anything, for that matter). |
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#9 (permalink) |
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Tele-Meister
Join Date: Nov 2003
Location: North Louisiana around Many
Posts: 316
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Yeah like Johnny said, always check a elliminate the simple things first. The fact that your tubes are lighting up means your Power transformer is working and heater voltage is getting to tubes. If the 6L6 get really hot that means they are also getting the high voltage DC power from filter caps that is controlled by the stanby switch. If you have your stanby switch on, you will get nothing until you dis-engage the stanby---off course you knew that.
Yes the amp can be damaged if you run it with all power up and the speaker is somehow disconnected. Tube amps need a speaker load to keep from self destructing. That's why it's important to be sure about your speaker connection. Solid State amps no problem. A multi meter is a cool tool to have when you fool with amps. You can get a cheap one from wal warts for about $10 -$15---where you could do Ohm test on speaker leads, guitar cables---amp circuits and you could test your speaker cables to know for sure they are OK. You could possibly check the speaker by hooking it up to another amp or hooking another extra speaker. BTW---how far was that tube cocked over that you straighten up???? I would recomend pulling that tube and visually inspecting it for any damage. Platefire
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On the Right Track now Baby<>< |
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#11 (permalink) |
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Poster Extraordinaire
Join Date: Jan 2004
Location: Sioux Falls, SD
Posts: 6,654
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The Delta Blues is an EL84 amp right? Peavey Classic series?
It will have both the mains fuse and a couple of other fuses inside the chassis. You will need to drop the chassis to check it. Put the amp on a table and on its side with the chassis facing you. This will allow you to take out the four screws on the top of the chassis without the chassis falling. Unhook the speaker leads, tape one, and mark it so you'll remember which way they go on. Once the four screws are out, carefuly wiggle it out so you don't tear the covering. The fuses will be located close to the power cable. Remove them and inspect them. Replace them with only same type and amperage. One of them will be a slow-blow and I'm betting that one will be the one you need to replace. |
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#12 (permalink) |
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Tele-Meister
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Well, I've done everything you guys suggested and I guess it's going to the shop.
1. All guitars and cables are fine, just quick-tested them with a couple other amps. 2. The original tube that was off kilter was off by only 5 or 6 degrees, I pulled and inspected that and all pins are fine. Also it lights up and warms up just fine. 3. Using my M-2 multimeter all the wiring that I can test is fine. 4. Dropped the chassis and the fuses are fine. Going to the tech Monday. Thanks a lot for all the replies. Guess I'm stuck playing through one of the Fenders or transtubes today... sigh. Cassidy |
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#13 (permalink) |
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Tele-Meister
Join Date: Nov 2003
Location: North Louisiana around Many
Posts: 316
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Please post what the problem was----you got my curosity up!!!!
I use to have 1990 Bandit the year before they went transtube. For a SS amp-- it sounded pretty good. I've never played through a transtube---what is your opinion of it acutally being tube like??? Platefire
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On the Right Track now Baby<>< |
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#14 (permalink) |
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Tele-Meister
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Platefire, I'll let you know what the problem was when I know.
My transtubes are a 1999 60 Watt Studio Pro with a 12" speaker and a 2005 Rage 15 watt with 8" speaker. The Studio Pro is a great amp. I'm a singer that mostly plays rhythm, and I have no trouble finding a great clean tone for chords, plus switching channels and pushing it just a little you get a very nice little crunch that doesn't break up or get noisy with chords. At 60 watts and only about 30 pounds it's an easy choice for taking to weekend jams or blues night at the downtown blues bar. It's not the amp the Delta Blues is, but it doesn't sound all "solid state trebly" at all, and I get a lot of comments about it. I've even had a couple of shredders plug into it and turn up the nasty and crank out some respectable metal sound (I actually had to ask each one twice if I could have it back). The rage is actually the second one I had (the first was an older one without the transtube). I got this one by accident sort of, part of a trade, and I fully intended to sell it after the deal. Then I tried it, and discovered it's way better than it's predecessor. It delivers the same positive traits as the larger Studio Pro, but in a practice size. My son uses it a lot, and frankly I would too if I didn't have the 25 watt Fender Frontman (I gotta have my touch of reverb). Cassidy |
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#15 (permalink) |
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Tele-Meister
Join Date: Nov 2003
Location: North Louisiana around Many
Posts: 316
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Cassidy
Several years back I had a Peavey Audition 20 that I used a lot for lead guitar. I play in Church a lot with just a piano and maybe bass so without drums to compete with, the 15 watts was plenty loud, tonefull and nice response. The distortion had a sound like a cranked Marshall--if you can imagine that. I even did a little recording with it and got a good sound down. I strated playing tube amps in 1998 and been using those ever since. Nothing wrong with SS amps though---there getting better all the time. Platefire
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On the Right Track now Baby<>< |
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#16 (permalink) |
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Tele-Meister
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Yeah, I've been surprised too. I never thought I'd like SS amps and now I have three that I like. Weird. Maybe as I get older my brain tells me to like smaller, lightweight amps more than they deserve. ;)
I've been keeping my eyes open for a Champ though... so maybe if I find one I won't like these guys anymore. lol Cassidy |
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#18 (permalink) |
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Friend of Leo's
Join Date: May 2005
Location: Eugene, Oregon
Age: 31
Posts: 2,875
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There is one other thing take a guitar cable run from the effects send to the effects return it restores sound the you one of the jacks on the effects loops needs to be resolder also check the input jack as well as others.
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tazzboy Guitar: 1982 Gibson Les Paul Standard AMP: 59 Bassman Reissue. EFFECTS: 2 Boss TR-2 Tremolo, Boss CE-2 Chorus, and Boss DM-3 Echo Delay. |
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#19 (permalink) | |
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Tele-Meister
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Quote:
Anybody care to explain how this happens? I know very little about tube amps. Cassidy |
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