This is now a general sales thread. Feel free to PM me if you are interested in one.
I am now offering RGB amplifiers that are designed with the PC Engine and TurboGrafx16 in mind. It should work on a RGB capable N64, but I don't have one on hand to test it with.
This board uses the popular Texas Instruments THS7314 3 channel amplifier. It has a biasing network, decoupling caps and DC filtering caps. You might see some other designs that use the THS7314 and a couple resistors and that's it. Well, they are built wrong and not designed per the TI spec sheet. This circuit and pcb layout was designed by micro over @ NFGGames forum. I asked micro for his permission ahead of time to build and sell his amp design. You can also find a link to the gerber files for the pcbs in that thread.
I have built out about 10 of these boards and tested them to great success. I have a couple boards that have been sent out to my earlier testers to get some feedback on. I have made a change to micro's circuit by opting to use 100 ohm resistors on the output rather than the original 75 ohm that he specs. I found that with 75 ohms the picture was a little too bright and over saturated where as passing it through 100 ohm resistors seems just about right.
The blank PCBs are fabbed in China/Hong Kong (of course) but everything else is hand soldered right here in Ohio.
Each board is approx. 1.25 inches long by .75 inches wide. It's tiny. Easy to fit in even the most cramped of spaces like the original white PCE:
Very first of the finished amps. New ones have cleaner soldering.
Installed in a White PCE with 8 pin mini din connector replacing the stock RF unit.
Installed in a Duo-R.
Supergrafx install
The amps are fairly easy to install. They need 5v and ground for power. Then just solder 3 wires for Red, green and blue to the amp (from either the expansion port or Hu cpu) and then 3 wires from the amp to your RGB connector on your system. You will use composite video as your sync as this is only a 3 channel amplifier. The board can be secured down with simple double sided foam tape.
White PCE/CoreGrafx/TG16/SuperGrafx/SCDrom2 can tap RGB from either the bottom side of the expansion port or from the HU cpu directly. On any of the Duo's you must solder to the Hu cpu directly to obtain RGB.
I might offer kits that include 1 amp, an 8 pin din socket to replace the original 5 pin and a Euro Scart cable. This would be suitable for all PCE systems except the original White PCE and TG16 as they don't have 5 pin Din A/V outs. You will need to roll your own cable/connector solution on those machines. Mmmonkey's website has a good guide to replace the original RF socket with a 8 pin mini din (like my White PCE pictured above.
I wouldn't say this is a difficult install, but you need good hand soldering skills when soldering to the Hu CPU and appropriate desoldering tools if removing the stock 5 pin connector and replacing with an 8 pin din.
These are $25 shipped for each amp.
or
A kit which includes the Amp, 8 pin din socket and Euro Scart cable (Euro only, no JP21) which is $45 shipped.
These are domestic shipped prices. International will cost a couple dollars more.
edit:
For those that choose the kit, here is a pic of the back of the 8 pin din and where the RGB wires need to be soldered to correspond with the Scart cable wiring:
The 8 pin din will already have the 3 rear pins trimmed so that the it can be installed where the 5 pin din was.
I am now offering RGB amplifiers that are designed with the PC Engine and TurboGrafx16 in mind. It should work on a RGB capable N64, but I don't have one on hand to test it with.
This board uses the popular Texas Instruments THS7314 3 channel amplifier. It has a biasing network, decoupling caps and DC filtering caps. You might see some other designs that use the THS7314 and a couple resistors and that's it. Well, they are built wrong and not designed per the TI spec sheet. This circuit and pcb layout was designed by micro over @ NFGGames forum. I asked micro for his permission ahead of time to build and sell his amp design. You can also find a link to the gerber files for the pcbs in that thread.
I have built out about 10 of these boards and tested them to great success. I have a couple boards that have been sent out to my earlier testers to get some feedback on. I have made a change to micro's circuit by opting to use 100 ohm resistors on the output rather than the original 75 ohm that he specs. I found that with 75 ohms the picture was a little too bright and over saturated where as passing it through 100 ohm resistors seems just about right.
The blank PCBs are fabbed in China/Hong Kong (of course) but everything else is hand soldered right here in Ohio.
Each board is approx. 1.25 inches long by .75 inches wide. It's tiny. Easy to fit in even the most cramped of spaces like the original white PCE:
Very first of the finished amps. New ones have cleaner soldering.
Installed in a White PCE with 8 pin mini din connector replacing the stock RF unit.
Installed in a Duo-R.
Supergrafx install
The amps are fairly easy to install. They need 5v and ground for power. Then just solder 3 wires for Red, green and blue to the amp (from either the expansion port or Hu cpu) and then 3 wires from the amp to your RGB connector on your system. You will use composite video as your sync as this is only a 3 channel amplifier. The board can be secured down with simple double sided foam tape.
White PCE/CoreGrafx/TG16/SuperGrafx/SCDrom2 can tap RGB from either the bottom side of the expansion port or from the HU cpu directly. On any of the Duo's you must solder to the Hu cpu directly to obtain RGB.
I might offer kits that include 1 amp, an 8 pin din socket to replace the original 5 pin and a Euro Scart cable. This would be suitable for all PCE systems except the original White PCE and TG16 as they don't have 5 pin Din A/V outs. You will need to roll your own cable/connector solution on those machines. Mmmonkey's website has a good guide to replace the original RF socket with a 8 pin mini din (like my White PCE pictured above.
I wouldn't say this is a difficult install, but you need good hand soldering skills when soldering to the Hu CPU and appropriate desoldering tools if removing the stock 5 pin connector and replacing with an 8 pin din.
These are $25 shipped for each amp.
or
A kit which includes the Amp, 8 pin din socket and Euro Scart cable (Euro only, no JP21) which is $45 shipped.
These are domestic shipped prices. International will cost a couple dollars more.
edit:
For those that choose the kit, here is a pic of the back of the 8 pin din and where the RGB wires need to be soldered to correspond with the Scart cable wiring:
The 8 pin din will already have the 3 rear pins trimmed so that the it can be installed where the 5 pin din was.
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