Page 5 of 11
#161
Power tube board comes out first. Pull the tube retainer clips from the top and them remove the screws from inside the chassis. There are 2 hidden screws under the powertube PCB.

Grab a sharpie and scribble the junction number on the plastic cover over wire terminal.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
Last edited by R45VT at Feb 6, 2013,
#162
Quote by R45VT
Power tube board comes out first. Pull the tube retainer clips from the top and them remove the screws from inside the chassis. There are 2 hidden screws under the powertube PCB.


sneaky bastards. thanks
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/
#163
I would mark each wire. No need for confusion later.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#164
Quote by R45VT
I would mark each wire. No need for confusion later.


i did. of each set one got a sharpie dot the other a tiny tiny drop of white out.

i cannot get the plugs off the switches, they just aren't budging. any suggestions for that?

at current state the board is completely free minus the power stand by switches. i am done for tonight. i will be at it tomorrow likely.

thanks.
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/
#165
Leave the wiring on the switches. If you pull the connections off the PCB there is no need to disconnect them.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#166
here it is as it sits





pulling wires off of the board was hell. i had to use a pliers i didn't damage anything. i think i only may have messed up one wire connection, but i will figure it out. i was very slow and comprehensive.

thanks R45VT!
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/
#167
Cool. Have fun.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#168
Quote by R45VT
Cool. Have fun.


thanks. i couldn't stop without getting the board out of there. its addicting. i am already speculating how to fix the ampeg lee jackson, i feel good knowing that i got it done. plus having extra time was a bonus.

now the mods may not happen until this weekend. but you will be the first to know.
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/
#169
it is modded and back in the chassis, but my dumb ass have some wiring confusion.

there are three blue wires near the switches, one is blue with white stripe, the other two are just blue. i dotted one with a sharpie but now dont remember which one the mark was associated with. could anybody have an idea or even better get a high def pic posted/emailed for me?

i have a few other kinks but thats the main one.

i will come back again in the next little bit.
____________________

edit: i think i figured out which blue it was, but... is there a way i can test it to make sure?

also the two grey wires with the grey with clear and black. i don't remember what was there.

____________________

i took a ton of pics but they were really blurry, i don't have the best camera. and i really doesn't help the fact that i have schizophrenia and meds make me shake sometimes.
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/
Last edited by trashedlostfdup at Feb 13, 2013,
#170
I am in VA right now. I can look at my pics and even pull one apart again.

I'll be back Friday.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#171
Quote by R45VT
I am in VA right now. I can look at my pics and even pull one apart again.

I'll be back Friday.


first off, i hope all is well with you, thanks for all of the help.

my modding is done! with a small flaw.

the OD channel is amazingly better, but i do wish i could get a little more bass out of the low end, not a big deal (its in an odd cab two V30's and two celestion EVH), so that may be part of it. but it really is night and day. once i eq'd it in, it sounded perfect for thrash. like older metallica.

but the clean channel has this shrill screeching that is literally painful to hear and i don't know what it wrong. i posted a thread about it. the tubes were good when i took them out, but maybe it will just be a bad tube.

but after the mods, the OD is much better.
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/
#172
Uh.

Can you put a clip on YouTube? It almost sounds like oscillation, which shouldn't happen on the clean channel... It just call me Friday and turn it on and let me hear it.

Neither of mine have that problem. Switch the preamp tubes from one of your other amps just for a quick test.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#173
Quote by R45VT
Uh.

Can you put a clip on YouTube? It almost sounds like oscillation, which shouldn't happen on the clean channel... It just call me Friday and turn it on and let me hear it.

Neither of mine have that problem. Switch the preamp tubes from one of your other amps just for a quick test.


good news. i just popped some tubes in there and V1 was microphonic. all is good now, its going on one here so i can't get the volume up a ton, but cleans sound good too not really any difference that i can remember.

the only thing that really sucks is that now i only have got back up now are EHX tubes. yuck. i get them in so many amps and pull them right away... lol.

but thanks for the help. and i was doing some researching on oscillation, its pretty interesting (as least controlled)
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/
#176
I just acquired a BV-60 combo and it sounds great. I do have one problem; the clean channel has a pretty significant hum. Does anyone else have this problem? What could that be and where would be a good place to start looking??? Thanks.
Guitar Jukebox
#177
It should be pretty silent.

Any spare tubes to swap in 1 at a time? You could switch 1&2 just for a quick test.

What is the reverb level at? Any change if you turn it down?

If you unplug the cable from the front of the amp is the hum still there?

*it doesn't really sound like a tube but start there anyway.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#178
i noticed something odd today playing, the clean channel gets loud on two, but the dirty channel doesn't cook until noon. why could this be? i did mod it per specs on the first page (as you know R45VT). any thoughts?

would you use a 12at7 for this amp? i still would like clearing the little bit fizzyness it has.
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/
#179
I little hint, man. Next time you are pulling something apart to that degree, take photos along the way. Digital cameras are a godsend to techs. Techs started using them before anybody. They make life so much easier. And now they're in your bloody phone. What a world we live in.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#180
Quote by Cathbard
I little hint, man. Next time you are pulling something apart to that degree, take photos along the way. Digital cameras are a godsend to techs. Techs started using them before anybody. They make life so much easier. And now they're in your bloody phone. What a world we live in.


i have probably a hundred pictures through the process. two are in post 166 for example, but i have some macro shots as well. but its not overly easy for me because of schizophrenia meds and i shake like a mother****er.
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/
Last edited by trashedlostfdup at Apr 17, 2013,
#181
Then how did you mix up the wires? That's the sort of thing you should be photographing.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#182
The clean channel volume pot was linear and the dirt channel was logarithmic if I remember.

That will explained the difference. When I did the last blue one I switched the clean to log as well.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#183
Quote by Cathbard
Then how did you mix up the wires? That's the sort of thing you should be photographing.


thinking my shots were clearer and not shaky. i learned to check them after. also several occasions there were for example two green wires that weren't noticeably different with a green with a white line all going into the same spot. its hard to tell when they are all wrapped up. first time modding an amp. and the stuff i have messed before were much more simple (18w jtm45).
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/
#184
Quote by R45VT
The clean channel volume pot was linear and the dirt channel was logarithmic if I remember.

That will explained the difference. When I did the last blue one I switched the clean to log as well.


that was one thing i was thinking, glad to know its good and not something wrong.
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/
#185
Yeah the blue tolex had linear for the clean and Audio/log for the dirt channel...

it was revised for the black tolex- both audio taper.

Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#186
Damn... I just skimmed through this thread. Ive never been able to find a dedicated BV thread, and out of nowhere... here it is. Kick ass fellas... kick ass. I had some issues with mine and I recently just sent it to a shop to get it looked at. Had I have found this prior... I would've done a lot more looking around on the boards. BV120H here btw.... made in St. Louis. I do think the later ones were made in China. Crate did being creating a lot of their stuff overseas not too long ago, and I believe this is the reason people dog on the quality of CRATE now a days. Although Ive never come across a crate I didn't like :-). Nice find right here.
#187
Quote by CantStopRockin
Damn... I just skimmed through this thread. Ive never been able to find a dedicated BV thread, and out of nowhere... here it is. Kick ass fellas... kick ass. I had some issues with mine and I recently just sent it to a shop to get it looked at. Had I have found this prior... I would've done a lot more looking around on the boards. BV120H here btw.... made in St. Louis. I do think the later ones were made in China. Crate did being creating a lot of their stuff overseas not too long ago, and I believe this is the reason people dog on the quality of CRATE now a days. Although Ive never come across a crate I didn't like :-). Nice find right here.


Do you have it fixed? Welcome
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#188
I haven't man. I haven't even heard back from the tech yet. The place I brought it to sends it to their 'dedicated' tube amp specialist. So now that guy has to get ahold of me. Called the shop yesterday and was told Id hear back...... still waiting...
#189
Ive had the absolute best luck with my BV120h baby btw. I bought it ten years ago from a guy who just wanted it out of his basement, the whole halfstack I mind you. He didn't know what was wrong with it and just wanted it out. So I offered him $50 if I could fix it. Got it home and found a blown pre-amp tube. Gave the guy his $50 hahaha. All in all paid $61.
Never changed the tubes til now though. So now Im $240 out on tubes and $50 for a tech to just open the head and let me know whats up. The luck is beginning to wear off now, but atleast Itll be singing strong again real soon.
Last edited by CantStopRockin at Apr 20, 2013,
#190
Wow. cheapest I got one for was $100.

What type of tubes did you put in it now? JJ's are near a must for the preamp as it took the harsh fizz out of mine. I'd like to try a JAN 5781 or whatever in V1 or the PI just to see. The amp has more than enough gain.

Post with what he finds wrong. It may help someone else down the road.

Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#191
I know Im gunna catch alot of sh*t for this, but Groove tube 6l6-GE and GT 12ax7-Rs for the preamp. Not a big fan of guitar center, but that's all they had at my local one. Seeing as Groove tube just relabeled other brands as their own I didn't think itd be too bad. the 12ax7s are, for a lack of better are Sovteks WC, and the 6l6-GEs I hear are made with a lot of NOS material. Gotta keep in mind that I never replaced my tubes until now (in 10 years). Any tubes will make it sound a whole lot better. I may pick up a few different brands for the preamp, but Im still learning which positions do what in the mix
#192
I keep my amp on the clean channel too. I own a Zoom g9.2tt for all my distortion and effects needs :-)
#193
V1 has the biggest impact. Its the further right, closest to the input jack if I remember correctly.

Play with that one and the PI (furthest left, all alone).

I'd get a JJ and tungsol and swap around to see which one you like. You can get a long plate JJ 12AX7 as well since its not a combo.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#194
Well who cares then... the cleans are great on it. The dirt channel was just too bright and fizzy.

It makes for an excellent power amp.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
#195
Quote by R45VT
Well who cares then... the cleans are great on it. The dirt channel was just too bright and fizzy.

It makes for an excellent power amp.



Agreed. I always despised the distortion channel on it. Alternated between channel two and a boss metal zone for awhile... Idk which was worse honestly hahaha. But now that Ive got the Zoom I have no worries.
V1 is the tube that stands alone I assume? Ive been looking at schematics lately and am now just starting to make heads or tails of it all.
#196
And PI? P1? I take it that means the power tube eh? Anyone who owns a BV can attest to the fact that whenever tubes are swapped it needs to be biased. I don't have the tools needed to bias it, so screwing with the power section after I have it set up, Im a little apprehensive.
#197
Although Ive owned the amp for this long, I never knew you could alter the sound a bit by swapping out a tube here or there to make for a different sound. What would taking out a preamp tube and putting another (JJ, tungsol, etc) do to the sound?
Im not stupid, but I guess I am ignorant hahaha. Ive only recently been getting into what different tubes can do.
#198
Quote by CantStopRockin
And PI? P1? I take it that means the power tube eh? Anyone who owns a BV can attest to the fact that whenever tubes are swapped it needs to be biased. I don't have the tools needed to bias it, so screwing with the power section after I have it set up, Im a little apprehensive.



PI=Phase Inverter. It's the one all the way on the left if I remember correctly. Closest to the power switches.

V1 is on the right closest to the input jack.

And yes you have to bias the power tubes.


V1 is the first input gain stage and is the most important. It has by far the biggest impact in the preamp section. The Phase Inverter is technically in the power section and it splits the signal for the power section. It also can make a difference more than the rest.


Edit: there are a few trains of thought here. Some say change tubes has minimal impact and tone and it all black voodoo stuff, any change in tone could be dialed out with the EQ. Others love to "tube roll" and find out what works the best for them.

JJ's are a bit darker of a tube. For me they took the fizz out of the distortion channel. It was part of the sound I hadn't been able to EQ out prior.

Tung sols are a bit brighter, albeit possibly thin. Most people only run 1 of them.

Don't expect a completely new amp from switching them around. Expect a 5-10% change in sound.

GT's were fizzy.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.
Last edited by R45VT at Apr 20, 2013,
#199
Oh alright, I got ya. I stumbled upon something just a day or two talking about swapping the phase inverter and had no idea there would've made a difference. I know theres one tube that stands alone.. and that's near the input jack to the right. That's V1 that you speak of? In turn the one all the way to left is the PI? Just trying to make sure man hahaha. Again, ignorance.
Epiphone Les Paul Studio/Stock
Squier Trans Fat Strat HH/EMGs
Squier Standard Strat/Stock
Ibanez Acoustic/Ele EW20ASE
Blue Voodoo 120H
ZOOM G9.2tt
#200
the one that is alone is the PI.

The one all the way on the other side V1.

I was talking left or right from the front view.

Just remember V1 is closest to the input jack and you are all good.


Again- don't expect a new amp. Just subtle or slight differences.
Quote by DeathByDestroyr
See, it's important that people clarify when they say "metal", because I pretty much always assume they are a Cannibal Corpse fanboi.