Help....!! Think i cooked my overtone...

[monkjunior]

Ok, some advice needed please.... have been using my overtone and love it and it has been sounding great...
tonight did something dumb.... plugged in my speaker cabinet without really looking did it by feel... turned my amp on and no sound???? checked my pedals etc nothing wrong there... went to the amp and you guessed it.... I had the the speaker plugged into my effects loop...

so quickly turned it off...
anyway's plugged in where it should be everything was sounding ok and running fine for 2 songs then it just kinda died... there was a really really distorted tone but really really quiet if that makes sense... so turred it off changed leads tried pluggin direct from guitar to amp with different leads, changed guitars but then no sound at all... had to play the rest of the gig through my magicstomps going direct.....

so wondering where to start to check first, am thinking given that i turned the amp on basically with no load that i have cooked the ouput Tx right??? how can i test this or perhaps what else or where else would i be looking???
any suggestions appreciated...

luckily my only other gigs this weekend are acoustic things but i need my amp for tuesday and my backup (ac30) is in the shop being repaired as well, so hoping i can maybe fix this puppy myself for tuesday...

thanks

[phsyconoodler]

It usually takes a while before you can cook an OT like that.Unless the OT on the overtone is a cheap quality one and then all bets are off.
A low distorted output can also mean a bad power tube.Try a pair of those before you despair.

[Frank C]

Sounds like you have a bad power tube. Take good power tube and swap one at a time with good tube. If that doesn't pan out do the same with preamp tubes. good luck www.myspace.com/matizo (http://www.myspace.com/matizo)

[monkjunior]

thanks guys will try that and see how i get on ....

[Blue Strat]

IF there is more than one speaker jack on the amp be sure that you plugged into the right one, not the extension jack. On some amps you'd get a very low level signal from the ext jack.

[monkjunior]

yeah am pretty sure when i eventually plugged it in i got it right......

it was working great for a couple of songs... i finished a song, was kinda noodling and it when realy quiet and was a really disgusting distorted sound and then that progreesively got really quiet same sound.... i turned the amp on standby... checked my pedal board... and that everything was fine there.... plugged direct into the amp and turned it on again... it kinda made a normal sound for a strum or 2 then just died then i had completely now sound output at all....

[doc]

I'm afraid its worthless now - you might as well ship it to me - I'll pay shipping plus ten bucks.:D

Seriously, since it sounded okay for 2 songs before going out, I think your transformers are fine. Check the fuse and tubes before going any farther. Make sure your speaker is okay - play through another one.

[monkjunior]

yeah silly me has no spare 6l6's to swap in to check..... doh!!!
will defo check the speaker first but dont think that that is the problem....
here is my guess at what may have happened.... without really knowing if that makes sense...
2 things perhaps when i did the mods to it maybe my 'craftmanship wasnt all that great so might be dodgy solder joint... i dont think so but possible...
also given that some have said power tube... i had a power cable stuffed in the back of the amp during transport and it was a bit tangledtrying to get it out... so potentially i could have caught the bias pot when manouvering to get it out and accidently brushed the pot and subsequently raised the bias point to more that the power tubes can handle ....and then subsequently ... cooked the power tubes... how likely does this sound???
will keep you updated...

[monkjunior]

ok so i was wrong and such a dumb ass jumped to conclusions.....
oh me of little faith in my soldering abillities!!!..

went and bought some tubes to swap in thinking gotta be the power tubes... not so much of an issue as i didnt have any spares although perhaps i might might of bought something different as the quickest i could get my hands on where a set of the new sensor svetlana's.... ... anyways thought i would fire the amp up plug it into my cabinet.. (before changing the tubes out...) and see if i was getting a bias reading??i had been running these puppies at about 36mA.... and sounded great to and well guess what nothing had changed which was a little befuddling.... so turned the amp of pulled the speaker plug from the amp and put my meter across the speaker lead and guess what open circuit..... plugged in to the 4 ohm side of the cabinet and was getting about 6.8ohms..... opened the cabinet up and put metter acorss each speaker same thing one showing infinite resistance and the other measuring about 6.8ohms....

so obviously dropped a speaker so thats good new and bad tube replacement is only about 50 bucks.... speaker replacement on the other hand to get me a private jack here in australia is almost $200... such a mark up and rip off!!!!

oh well not to worry......thanks for all the advice guys....

[monkjunior]

oh yeah another quick couple of questions though...
which tube in peoples opinions would be better the tungsol 6L6gc str's that came in the amp or the svetlana 6L6gc tubes that i picked up today....???

[monkjunior]

oh yeah my other question is ...
is 6.8ohms a low reading for a 8 ohm speaker

[scottl]

Bludotone uses the Tung Sol STR and I have to say they sound great!!! Stick with them, or use the Winged C SEDs. I have three amps with those Tung Sols and they all sound wonderful. Not a fan of the New Sensor Svetlana btw.

[scottl]

Normal....

oh yeah my other question is ...
is 6.8ohms a low reading for a 8 ohm speaker

[monkjunior]

thanks scott
yeah that was what i was thinking ... long story but essentially they were the easiest and quickest to get and though would at least be able to get my amp up and running... trying to explain the difference svet /SED difference to these dudes they just didnt get but i knew as soon as i seen the packaging... i was initially hoping it would be the 'c's.. as in the catalog they had advertised SED's but alas no winged logo!!!
so then again telling them that their advertisement wasnt accurate.. they still didnt get it..... blah blah
thanks again for the info....