Page 3 of 3
Re: JTM45 Not Loud
Posted: Fri Aug 28, 2009 12:00 pm
by spaceace76
LJay942 wrote:Just wanted to report back and say that it was in fact the capacitor not being grounded correctly on the Presence pot. Are correct, I should really read the manual for my multimeter
Glad to hear you sorted it out
Re: JTM45 Not Loud
Posted: Fri Aug 28, 2009 2:31 pm
by LJay942
408v DC on pin 3 of both power tubes
It's really hard to explain. The solder joint looked perfect (nice and shiny and flowed really nice. But when you pulled on the lead it slide through the ground lug (cold joint). Talk about a bitch to find. But now she screams!
Re: JTM45 Not Loud
Posted: Fri Aug 28, 2009 9:12 pm
by MBD115
Good going!!!! Glad you got it figured out.
Is it loud now
Re: JTM45 Not Loud
Posted: Fri Aug 28, 2009 9:22 pm
by LJay942
MBD115 wrote:Good going!!!! Glad you got it figured out.
Is it loud now
Scares the dog and makes things on the desk shake!
Another tech tip. If the amp sounds dull and flat. Check your tone controls
(Rookie mistake number 2)
Re: JTM45 Not Loud
Posted: Fri Aug 28, 2009 11:52 pm
by spaceace76
LJay942 wrote:MBD115 wrote:Good going!!!! Glad you got it figured out.
Is it loud now
Scares the dog and makes things on the desk shake!
Another tech tip. If the amp sounds dull and flat. Check your tone controls
(Rookie mistake number 2)
ahhh man. that's my favorite. when the tuner falls off the top of the amp...
this year at amp show, the gold cover from a marshall made knob on one of George's 45/100's fell off. he put it back on a few times, but it kept falling off from the enormous volume. it was awesome
Re: JTM45 Not Loud
Posted: Sat Aug 29, 2009 3:50 am
by LJay942
spaceace76 wrote:LJay942 wrote:MBD115 wrote:Good going!!!! Glad you got it figured out.
Is it loud now
Scares the dog and makes things on the desk shake!
Another tech tip. If the amp sounds dull and flat. Check your tone controls
(Rookie mistake number 2)
ahhh man. that's my favorite. when the tuner falls off the top of the amp...
this year at amp show, the gold cover from a marshall made knob on one of George's 45/100's fell off. he put it back on a few times, but it kept falling off from the enormous volume. it was awesome
That's awesome!
I want to build a 100w head. (I'm just a hobbyist, no band and no gigs) I only have a 2x12 cab w/ Greenbacks so I'm looking at picking up another 2x12 and making a cracked stack or swapping the Greenbacks for a pair of Scumbacks that can handle the power.
Re: JTM45 Not Loud
Posted: Sat Aug 29, 2009 5:06 am
by wildebassman
Happy for you that you got the amp up an' running!
Cheer,
Dennis.
Re: JTM45 Not Loud
Posted: Wed Jul 06, 2022 3:08 pm
by uiovbged332