#1
soooo. i was having a weird tone coming from it for a while, and i pencil tapped the tubes (i prefer chopsticks lol) V2 and v3 were coming through the amp.

i swapped around a ton of other tubes, and it still did it to a certain degree, lower the microphonics.

i thought it was a poweramp tube problem then, so i plugged the cable into the return, and it sounded as it should for going into the poweramp.

then... i swapped the preamp tubes again and turned it on. there was still no sound coming through the front end.

moments later i noticed that V1, V2, and V3 weren't glowing. worse, they were in fact COLD.

the pi and powertubes are fine and i can plug in through the return in and get acceptable results (for going into the return).

so what should i do?
WTLT 2014 GG&A

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#3
Quote by diabolical
I'd test with new preamp tubes and if that doesn't fix it, take to a tech.


i have put a dozen tubes through there. i will try it again, but i think something is wrong maybe one of the heater wires.

____


i forgot that now my footswitch isn't lighting up at all? what could that be from?
WTLT 2014 GG&A

Quote by andersondb7
alright "king of the guitar forum"


Quote by trashedlostfdup
nope i am "GOD of the guitar forum" i think that fits me better.


Quote by andersondb7
youre just being a jerk man.



****** NEW NEW NEW!
2017-07-07 2017-07-07 Update and a Chat On Noise Constraints *** NEW FRIDAY 7/7
2017-04-13 RUN AWAY from COMPUTERS!!! TCE? RANT ALERT!!!
2017-03-02 - Guitar Philosophy 1001- Be Prepared For the Situation (Thursday 2017-03-02)
2017-02-21 How to Hot-Rod the Hell of your Stratocaster for $50! (Tuesday 2017-2-21)
Resentments and Rambling from a Guitar Junkie
---> http://trashedengineering.blogspot.com/
#4
Check the heater supply. It's not reaching the preamp or the relay board. Get a meter on it and see where the 6.3V trail stops, that's your suspect.
#5
Quote by Roc8995
Check the heater supply. It's not reaching the preamp or the relay board. Get a meter on it and see where the 6.3V trail stops, that's your suspect.


that is kind of what i was thinking as far as whats wrong.

what should i be checking exactly? find the wire at the transformer that goes to the heaters and follow it along? i am assuming i will need a schematic. right?
WTLT 2014 GG&A

Quote by andersondb7
alright "king of the guitar forum"


Quote by trashedlostfdup
nope i am "GOD of the guitar forum" i think that fits me better.


Quote by andersondb7
youre just being a jerk man.



****** NEW NEW NEW!
2017-07-07 2017-07-07 Update and a Chat On Noise Constraints *** NEW FRIDAY 7/7
2017-04-13 RUN AWAY from COMPUTERS!!! TCE? RANT ALERT!!!
2017-03-02 - Guitar Philosophy 1001- Be Prepared For the Situation (Thursday 2017-03-02)
2017-02-21 How to Hot-Rod the Hell of your Stratocaster for $50! (Tuesday 2017-2-21)
Resentments and Rambling from a Guitar Junkie
---> http://trashedengineering.blogspot.com/
#6
I usually like to start at the end of the line and work backwards. If for example you're getting 6.3V at the socket pin, then you know right away that something else is wrong. Plus I find it easier to follow back from the pin than to start at the transformer, but that's just my preference.

Schematics are always helpful:
#7
Yeah, you don't need a schematic to chase heater voltage. It's a single run from transformer to tubes. Just follow the two wires.
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