|
100n |
x 3 | |
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MC 0.063W 0603 1% 75RMULTICOMP
|
x 2 | |
|
BC847 |
x 1 | |
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MFR50SJT-52-220RYAGEO(国巨)
|
x 1 |
Famicom AV/Power Board
A Power/AV PCB for Famicom (Japanese NES), drop in replacement for the power supply and adding composite video out (instead of RF).
This is the design from krzysiobal user on https://forums.nesdev.org/viewtopic.php?t=23683. I'm just porting for easier accessibility.
It is both compatible with
* first revision Famicom (with a big metal shielded dc/rf pcb, a'ka 5 pin), which has power switch on the 5V rail (SW1 is the switch, SW2 should be closed)
* second revision (with a small dc/rf pcb a'ka 7pin), which has power swtch on 9V rail (SW1 should be closed, SW2 should be OPEN)
(just connect JP1/JP2 differently according to the description)
It does not have the gretz's bridge, just a simple schottky diode placed on the DC input to protect against wrong polarization.
Video amp is as in most of famiclones.
And the most important thing - there is a place to solder either
* mini jack A+V connector (this way you don't have to drill any holes in your shell)
or
* Audio RCA + Video RCA where originally two switches were placed (you need to enlarge those holes a little)
BOM:
Power part:
DC-005 5.5mm x 2.1mm DC Power Female Jack Socket Connectors- for power supply (https://www.aliexpress.com/item/1005002530301943.html)
1N4004 diode
C1: 1000uF, 16V (needs to be higher than 9V)
C2: 100n, 16V (SMD)
7805 voltage regulator + Radiator (optional)
C3: 100n (SMD)
C4: 470uF 16V, (needs to be higher than 5V)
Video part:
R1: 75R (SMD)
T1: BC847 (SMD)
R2: 220R (SMD)
R3 75R (SMD)
C1: 100n (SMD)
3.5MM Audio Jack Connector Through Holes PCB Horizontal 4 Contact 4 Conductor Right Angle (https://vi.aliexpress.com/item/33021730474.html)
OR
2x RCA connector
TODO
IMPORTANT: I HAVE NOT YET MADE THIS BOARD, SO THERE IS NO CONFIRMATION THAT THE DESIGN OR THE PCB IS OK, USE AT YOUR OWN RISK
Famicom AV/Power Board
*PCBWay community is a shared platform and we are not responsible for any design issues.
- Comments(0)
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- Francisco Meza Mar 04,2024
- propgm Feb 29,2024
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