Durham Electronics - Sex Drive [traced]
I tried a Mucho Boosto today and didn't like it too much. It had a fizzy or fuzzy top end that couldn't be dialed out even on warm settings. I was using a modified Vibroverb and a Tele with Lawrence and Fralin pups. It did sound better for rhythm than lead.
Apparently it is the same circuit as the Sex Drive with some changes to give it more gain.
Apparently it is the same circuit as the Sex Drive with some changes to give it more gain.
- analogguru
- Old Solderhand
Information
aloupous wrote:Hmm... Just opened this up ... The board is gooped .. the whole thing...
Never buy a gooped pedal:analogguru translation wrote:.....very much is to be goop inside...
Goop only proves, that the pedal is not worth the money people charge for it.
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
I think it delivers on what it is supposed to do: A really clean boost, with some compression if you want. Still, I've never seen this circuit around and I'd like to know how it works.
The goop is a hard, cream colored goop. When I drill into it carefully with a dremel, a black powder residue can be seen. I've tried putting a little acetone on it, which doesn't really soften it. Any ideas? How should I go about removing it?
I'm ok if I damage say 1 or 2 components that I can replace, but I'd rather not destroy the board ...
The goop is a hard, cream colored goop. When I drill into it carefully with a dremel, a black powder residue can be seen. I've tried putting a little acetone on it, which doesn't really soften it. Any ideas? How should I go about removing it?
I'm ok if I damage say 1 or 2 components that I can replace, but I'd rather not destroy the board ...
A hot solder iron.........and no I'm not kidding.aloupos wrote:I think it delivers on what it is supposed to do: A really clean boost, with some compression if you want. Still, I've never seen this circuit around and I'd like to know how it works.
The goop is a hard, cream colored goop. When I drill into it carefully with a dremel, a black powder residue can be seen. I've tried putting a little acetone on it, which doesn't really soften it. Any ideas? How should I go about removing it?
I'm ok if I damage say 1 or 2 components that I can replace, but I'd rather not destroy the board ...
- bajaman
- Old Solderhand
Information
- Posts: 4549
- Joined: 26 Jun 2007, 21:18
- Location: New Brighton, Christchurch, NZ
- Has thanked: 596 times
- Been thanked: 2061 times
and an extractor fan - so you don't have to endure the pungent fumesA hot solder iron.........and no I'm not kidding.
bajaman
Interesting ... the soldering iron seems to turn the goop to fine powder, instead of melting it as I expected.
It is coming off, but a very slow process.
The PCB came off the enclosure during the process, so here's a shot of the bottom of the pcb:
It is coming off, but a very slow process.
The PCB came off the enclosure during the process, so here's a shot of the bottom of the pcb:
- analogguru
- Old Solderhand
Information
And nobody knows, why he needs a double-sided-pcb for this:
http://analogguru.an.ohost.de/temp/Durh ... cks_c2.jpg
Interesting... can this be a TS-style tone-control ?
analogguru
http://analogguru.an.ohost.de/temp/Durh ... cks_c2.jpg
Interesting... can this be a TS-style tone-control ?
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
One thing you can try is a heat gun and dental picks (and a 1/4" wood chisel for large chunks). If it is potting epoxy, it turns crumbly and powdery when it is heated enough, and then can be easily picked out of the circuit and even off most of the components. At my work we encapsulate circuitry in potting epoxy (the circuitry is designed for operation in water), and we take them apart to the bare boards for troubleshooting with this technique.
MKB wrote:One thing you can try is a heat gun and dental picks (and a 1/4" wood chisel for large chunks). If it is potting epoxy, it turns crumbly and powdery when it is heated enough, and then can be easily picked out of the circuit and even off most of the components. At my work we encapsulate circuitry in potting epoxy (the circuitry is designed for operation in water), and we take them apart to the bare boards for troubleshooting with this technique.
LOL! Same here! We do Torque Telemetry Instrumentation but we pot with urethanes instead of epoxy...much cleaner and easier to use imho. There are times when we have to do fall out analysis and we have to excavate.
- foo zen trader
- Breadboard Brother
omg... I'm really excited!!! I'm not kidding... can't wait to see more!!!
thank you so much, aloupos!!!
thank you so much, aloupos!!!
JABBA DABBA DOOM
- mrhenry
- Breadboard Brother
Information
- Posts: 71
- Joined: 06 Feb 2008, 15:42
- my favorite amplifier: soniccord toad, tweed bandmaster, JTM45
- Location: Ft. Worth, Texas
Any word on how its coming getting the potting epoxy (if that is what it is) out of there? I have a couple Durham pedals (Boosto and Crazy Horse) and I would like to 'degoop' them but I am a noob and I'm afraid i'll put myself out of some cash if I screw it up. So, I am just looking for a report from those more experienced so I can proceed with degooping it and getting some photos of those circuits/components up here on the forum. I don't know why Alan is so concerned with gooping stuff up; he's a really nice dude and doesn't at all come off like some other boutique builders (you all know who I am talking about) so it just doesn't make any sense for him to do this. Is there advantage at all to this stuff? does it stabilize the components, prevent damage etc.? All I can think of is that It sure makes it a bitch to repair something if any of those components fail or if a wire shorts etc. etc. Its just a bit disappointing.
Anyway, just checking up on a topic that hasn't seen action in a while.
cheers,
mrhenry
Anyway, just checking up on a topic that hasn't seen action in a while.
cheers,
mrhenry
- analogguru
- Old Solderhand
Information
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
Information
- Posts: 4
- Joined: 03 Jan 2008, 13:44
- Location: Charleston
It's been a while...anybody got any info on the sex drive circuit?
- Greg
- Old Solderhand
It would be great to add this one to the "solved" pile... and it doesn't look too complicated.
aloupos.. are you out there ?
Can you tell us how you fared with it ?
aloupos.. are you out there ?
Can you tell us how you fared with it ?
culturejam wrote: We are equal opportunity exposure artists.