Blackstone Appliances - MOSFET OD (2SV3.12) [ goop-alarm ] [traced]
- noelgrassy
- Resistor Ronker
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- Posts: 388
- Joined: 28 Nov 2007, 02:43
- my favorite amplifier: MOTS Magnatone & Trainwreck
- Completed builds: Tonebender Mk II w/ 3 OC75's, Burns BuzzAround w/NKT 275,Rangemaster w/ OC44, Fuzz Face w/ SKS363's, CJOD, Harmonic Percolator w/2N404A & 2N3635(vintage correct box,sliding pots, 1%glass resistors),Stack-O-Dimes & Whipple Wahs,
- Location: Vacuum Tube Valley, Cali
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---------------------------------Due to my inexorable photo skill upgrades I'm able to offer the glimpse in side a pedal I usually just "leave on" because there aren't any bad settings. Sadly, not only has this got traces on both sides[still tough tophotograph, for me], the designer has fabbed a hyper-secret epoxyblob[it's a neatly formed rectangle with 8 gold pins in-line poking out] that plugs into an in-line 8 pin socket. For the xistors, he's used common parts[mojo lite]. Q1, Q2=J201, Q3=MPSA13, Q4=MPF102. I'd love to use those chromed, slotted pot dialers in my builds if I new where to get them! Here's the first series of pics I shot before the card was full. I've gotta dump stuff & buy a fatter card. That's the jack between the 1/4" jax[they're on their own PC]------------------------------------------------ Note the in-line strip socket------------- His workmanship is the kind that should send the Grandlaff's packing!--------------------------------- Tell me what you need to see more of while my learning curve has plateau'd. NG
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- analogguru
- Old Solderhand
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Hmmm..... and where can I find the Mosfet ? in the "hyper-secret epoxyblub ?...the designer has fabbed a hyper-secret epoxyblob [it's a neatly formed rectangle with 8 gold pins in-line poking out] that plugs into an in-line 8 pin socket.
....
Q1, Q2=J201, Q3=MPSA13, Q4=MPF102
MPF102 is a vintage N-channel J-Fet (similar to 2N 3819)
J201 too.....
MPS A13 is bipolar.....
where is the MOS hiding?
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- The Rotagilla
- Diode Debunker
This was one of those pedals I loved in the store but hated when I got it home. It's been awhile, maybe I should give it another try.
- bajaman
- Old Solderhand
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Hey hey Rota - do you have one of these - please post some of your excellent hi res pictures of both sides of the board if you do
cheers
bajaman
cheers
bajaman
- The Rotagilla
- Diode Debunker
I haven't had one in awhile. Unfortunately disposable income is a little tight right now, otherwise I'd pick up a used one. If anyone has one they be willing to send my way ican do pics. Noel's photo skills are coming along nicely though.bajaman wrote:Hey hey Rota - do you have one of these - please post some of your excellent hi res pictures of both sides of the board if you do
cheers
bajaman
I don't even have anything on hand worth photographing right now.
- analogguru
- Old Solderhand
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Hmmm.... I don´t know.... are you looking for something like this?:
Blackstone Mosfet-OD tracks
analogguru
Blackstone Mosfet-OD tracks
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
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I think I have a better trace shot somewhere. I'm pretty curious about this little puppy.
- bajaman
- Old Solderhand
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Thanks AG, but I would love to see better pics of the other side of the board - very curious about this one - more so than the KLON - I wonder where that Klon is?????? hmmmmmmmmare you looking for something like this?:
bajaman
- soulsonic
- Old Solderhand
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That's a very good question.bajaman wrote:..... I wonder where that Klon is?????? hmmmmmmmm
- analogguru
- Old Solderhand
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at least no with me - so I beleive there where he has always been during the last months. But I think this theme is not for this thread.
analogguru
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- gnognofasciani
- Solder Soldier
- analogguru
- Old Solderhand
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Sadly it doesn´t match to the other pictures.
analogguru
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- gnognofasciani
- Solder Soldier
D'oh!
- noelgrassy
- Resistor Ronker
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- Posts: 388
- Joined: 28 Nov 2007, 02:43
- my favorite amplifier: MOTS Magnatone & Trainwreck
- Completed builds: Tonebender Mk II w/ 3 OC75's, Burns BuzzAround w/NKT 275,Rangemaster w/ OC44, Fuzz Face w/ SKS363's, CJOD, Harmonic Percolator w/2N404A & 2N3635(vintage correct box,sliding pots, 1%glass resistors),Stack-O-Dimes & Whipple Wahs,
- Location: Vacuum Tube Valley, Cali
- Has thanked: 11 times
- Been thanked: 3 times
Here's a link to the traces and components. I've taken a couple of the mystery chunk for edification but it reveals no secrets of what it contains. Good luck, NG!----------------------------https://s145.photobucket.com/albums/r222/noelgrassy/
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- oscarv77
- Solder Soldier
- sergedeep
- Breadboard Brother
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- Joined: 14 Aug 2007, 20:04
- Location: Heverlee, Belgium
Noel, can you maybe also add some values to the pics? And as analogguru said... where are the mosfets? Without knowing what's in that block of epoxy, the whole retracing thing seems rather pointless to me...
- ieatyouforbreakfast
- Breadboard Brother
anyone else notice the "stop obsessing and play yr guitar" quote on the pcb?
like that's gonna stop us..
like that's gonna stop us..
- noelgrassy
- Resistor Ronker
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- Posts: 388
- Joined: 28 Nov 2007, 02:43
- my favorite amplifier: MOTS Magnatone & Trainwreck
- Completed builds: Tonebender Mk II w/ 3 OC75's, Burns BuzzAround w/NKT 275,Rangemaster w/ OC44, Fuzz Face w/ SKS363's, CJOD, Harmonic Percolator w/2N404A & 2N3635(vintage correct box,sliding pots, 1%glass resistors),Stack-O-Dimes & Whipple Wahs,
- Location: Vacuum Tube Valley, Cali
- Has thanked: 11 times
- Been thanked: 3 times
I'm afraid you are correct. I'm not prepared to carve that block of epoxy up yet. The whole thread is for naught. Sorry I couldn't provide but I did learn a little about Photography 101. Bear with me, I'll get you guys something complete. Check my updates at the Haunting Mids Fuzz thread.sergedeep wrote:Noel, can you maybe also add some values to the pics? And as analogguru said... where are the mosfets? Without knowing what's in that block of epoxy, the whole retracing thing seems rather pointless to me...
Copyright does not protect facts, ideas, systems, or methods of operation, although it may protect the way these things are expressed. US Copyright Office
- bajaman
- Old Solderhand
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On the contrary - no need to carve the block of epoxy up - if we could just get some component values and better board pictures we should be able to reverse engineer this device and make some educated guesses as to what is in the epoxy block. I certainly do not think the whole thread is for naught just yet - we need better pictures - use the macro setting on your digital camera - and the resistor and capacitor values etc.I'm not prepared to carve that block of epoxy up yet. The whole thread is for naught
Then we can begin to work our magic.
cheers
bajaman