Marantz 2230 Preamp Board
- Thread starter patfont
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Looks good Pat but I have a suggestion. It's time to lay out a 4 layer pc board with solid ground plane on the outer layers minus component pad holes. That way we can design the lead spacing for the nice polypropylene and maybe optionally those nice but big white caps some of y'all use. 
Is it too late for an April Fool's Day joke? :lmao:
Seriously I've had the thought and would do the pot board as well to eliminate the "air sculpture" mounted parts due to the original boards' layout errors. :scratch2:
Is it too late for an April Fool's Day joke? :lmao:
Seriously I've had the thought and would do the pot board as well to eliminate the "air sculpture" mounted parts due to the original boards' layout errors. :scratch2:
I would think that there would be great interest in a new PCB that eliminates the original errors and allows incorporation of some of the mods that have been discussed on this forum. It could retain the same mounting pattern. I think that mounting pattern would allow some substantial changes in component sizing given that there's some unused space in the current footprint. I don't know about 4 layer, but a second layer (ground plane) might be worthwhile. I've seen other "crowd funding " efforts on AK so I'd bet you could do it in that fashion to reduce the cost of actually building the board. An example is the development of the CNC and HQMC phono sections here in AK. I don't know what the breakeven point is for creating a PCB but I'd guess you could easily sell 100 of these in short order. Look at the market that's been created for the fine black faceplates done by TMZ2, for example.
With approx. half a million Marantz using this type board it seems worth while. I see others doing it, White Oak with Phase Linear boards, there is someone who ran some Sansui driver boards. And there are boards for dual cap upgrades to modern parts.:scratch2:
TMZ2
Active Member
Wow great-looking work "Patfont" I wish I just knew the more technical side of it and thanks "hirscwi" If I could only do what you great technicians do here I would be all over manufacturing modded PC boards. With all your guises great mods I would put a whole entire new unit together with all the best that you guys show on here and due to these units 
Uh oh, what'd I get myself into? I can lay out boards in AutoCad and run the file converter to get the Gerber files PCB makers want. It would take some time to get it researched and done and I'll think about it. Since the pots are somewhat rare (well voulme pots can be), I'd think they would be reused so the hole pattern for those would be used. Perhaps a currently available pot(s) could be found.
I'm in contact with three PCB makers we use in China all the time and did do a small run board order some months ago with a mixed bag of boards on each panel. It ran me about $400 plus or minus. One of the boards was for LED fuse lights that have an AC to DC rectifier on back. I'm sensitive to flicker so I wanted to do my own design. Tony/TMZ2 has some for his 2275.
:scratch2:
I'm in contact with three PCB makers we use in China all the time and did do a small run board order some months ago with a mixed bag of boards on each panel. It ran me about $400 plus or minus. One of the boards was for LED fuse lights that have an AC to DC rectifier on back. I'm sensitive to flicker so I wanted to do my own design. Tony/TMZ2 has some for his 2275.
:scratch2:
Uh oh, what'd I get myself into? I can lay out boards in AutoCad and run the file converter to get the Gerber files PCB makers want. It would take some time to get it researched and done and I'll think about it. Since the pots are somewhat rare (well voulme pots can be), I'd think they would be reused so the hole pattern for those would be used. Perhaps a currently available pot(s) could be found.
I'm in contact with three PCB makers we use in China all the time and did do a small run board order some months ago with a mixed bag of boards on each panel. It ran me about $400 plus or minus. One of the boards was for LED fuse lights that have an AC to DC rectifier on back. I'm sensitive to flicker so I wanted to do my own design. Tony/TMZ2 has some for his 2275.
:scratch2:
I love your LEDs. They look great in the 2215b I put them in.
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Uh oh, what'd I get myself into? I can lay out boards in AutoCad and run the file converter to get the Gerber files PCB makers want. It would take some time to get it researched and done and I'll think about it. Since the pots are somewhat rare (well voulme pots can be), I'd think they would be reused so the hole pattern for those would be used. Perhaps a currently available pot(s) could be found.
I'm in contact with three PCB makers we use in China all the time and did do a small run board order some months ago with a mixed bag of boards on each panel. It ran me about $400 plus or minus. One of the boards was for LED fuse lights that have an AC to DC rectifier on back. I'm sensitive to flicker so I wanted to do my own design. Tony/TMZ2 has some for his 2275.
:scratch2:
Randy,
I would like to get involved with this if you're interested in making a go of it. I'll send yo a POM on this.
Bill
TMZ2
Active Member
Uh oh, what'd I get myself into? I can lay out boards in AutoCad and run the file converter to get the Gerber files PCB makers want. It would take some time to get it researched and done and I'll think about it. Since the pots are somewhat rare (well voulme pots can be), I'd think they would be reused so the hole pattern for those would be used. Perhaps a currently available pot(s) could be found.
I'm in contact with three PCB makers we use in China all the time and did do a small run board order some months ago with a mixed bag of boards on each panel. It ran me about $400 plus or minus. One of the boards was for LED fuse lights that have an AC to DC rectifier on back. I'm sensitive to flicker so I wanted to do my own design. Tony/TMZ2 has some for his 2275.
:scratch2:
By far all the units I have the unit that you did for me those LEDs are absolutely the best!!!! Thanks
LED board!
This post!
:worthless
This post!
:worthless
Uh oh, what'd I get myself into? I can lay out boards in AutoCad and run the file converter to get the Gerber files PCB makers want. It would take some time to get it researched and done and I'll think about it. Since the pots are somewhat rare (well voulme pots can be), I'd think they would be reused so the hole pattern for those would be used. Perhaps a currently available pot(s) could be found.
I'm in contact with three PCB makers we use in China all the time and did do a small run board order some months ago with a mixed bag of boards on each panel. It ran me about $400 plus or minus. One of the boards was for LED fuse lights that have an AC to DC rectifier on back. I'm sensitive to flicker so I wanted to do my own design. Tony/TMZ2 has some for his 2275.
:scratch2:
Ha ha Pat! At least you're a good sport about having your thread hi-jacked!!
I think I posted that in my 2500 rebuild thread but maybe not. I'll have to dig through the "pictures" folder on my home computer this evening.
Here: LED lights
I think I posted that in my 2500 rebuild thread but maybe not. I'll have to dig through the "pictures" folder on my home computer this evening.
Here: LED lights
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not really a good way of doing it. you have no drc, no synch with the schematic very error prone process, try eagle/dip-trace etc.
use the right tool for the right job.
not sure how auto cad would generate excellon drill data, solder mask, copper pours etc for pcb fab.
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Ha ha Pat! At least you're a good sport about having your thread hi-jacked!!
I think I posted that in my 2500 rebuild thread but maybe not. I'll have to dig through the "pictures" folder on my home computer this evening.
Here: LED lights
I remember that thread. Quite a nice piece of work. Lots of time went into that 2500.
ChrisMarantz
Super Member
I've been using Kicad with good results after the learning curve.
The boards could be made at Oshpark for about $16.00 each, for a 2 side board
Actually we've been using AutoCAD for years at work and I have a copy / great familiarity with it. We use FAB3000 by Numerical Innovation to convert to Gerber / Excellon drill files. It has copper pour and all the goodies. So for me it IS the best tool set and I have access to both - free. :thmbsp:
The boards, in the minimum quantity I mentioned from China will run about $12 a set. From Oshpark (I've not heard of them before) it looks more like $20. But a smaller run could be had to check out the fit and function first.
So it's more :scratch2: to do. If anyone reading this has any interest and you haven't chimed in, feel free to express yourself either way.
The boards, in the minimum quantity I mentioned from China will run about $12 a set. From Oshpark (I've not heard of them before) it looks more like $20. But a smaller run could be had to check out the fit and function first.
So it's more :scratch2: to do. If anyone reading this has any interest and you haven't chimed in, feel free to express yourself either way.
I'm just ballparking it as to the actual cost. If I'm going to design it, using hours of my free time, the set is going to go for more than that. Not exorbitant though. I'd need to look into not violating any AK rules and perhaps become a vendor. That alone may wipe out any profit but would support AK. That's a good thing!
I've already figured that the LED fuse lamps make for my restorations are not profitable so are only going to be for my usage. So they will not be going up for sale. Still I think I'll do a post so others can see what can be done with the software tools mentioned earlier.
I've already figured that the LED fuse lamps make for my restorations are not profitable so are only going to be for my usage. So they will not be going up for sale. Still I think I'll do a post so others can see what can be done with the software tools mentioned earlier.
I think that you should absolutely be paid for your investment of time. Since you are taking a risk (by purchasing a volume of the boards) there should also be an additional component to cover that - in addition to the recompense for your time. (I'd be happy to help you determine that offline). If the cost is $12, I'd think the selling price would be fair in the range of $18 to $22 or maybe even higher.
I don't have any idea of the rules about selling this type of thing on AK, but it certainly is done, so it must not be too onerous. I know that one member (skodahl) sells PCBs through a separate website.
ChrisMarantz
Super Member
If someone sells bare boards, they will be seen as being in the "kit" business and that means they are automatically in the "customer service" business.
You will have to deal with all sorts of questions about the "kit" and how to assemble it and what components to use and why it doesn't work and will how they want to modify it work and on and on. Then there are the returns and refunds etc. . .
If the "kit is popular you can quickly find yourself in the "pit of success"
