- 1Chips & ICs
- 1.1SHVC-CPU-01 (1990)
- 3Capacitor Lists
- 3.1NTSC Capacitor Lists
- 3.2PAL Capacitor Lists
S-RGB BA6595F SOP24 chip used in later SNES consoles. Converts RGB into S-Video and Composite and also amplifies and outputs analog RGB. S-RGB A BA6596F SOP24 chip used in the last produced SNES consoles, the SNES2/SFCJr and an early French N64. Converts RGB into S-Video and Composite and also amplifies and outputs analog RGB. Vcc 01 28 Vcc Vcc 02 27 register select(A14 used when DSP is mapped to cartridge memory region, nc 03 26 /CS A12 used when DSP is mapped to expansion memory region) nc 04 25 /RD nc 05 24 /WR D0 06 23 nc D1 07 22 nc D2 08 21 Vcc D3 09 20 Vcc D4 10 19 Vcc D5 11 18 Vcc D6 12 17 GND D7 13 16 RESET (inverted /RESET- SNES slot) D8 14 15 CLOCK. This cap kit for the Super Nintendo contains all parts necessary to replace the electrolytic capacitors of any non-SHVC model (excluding RF module), including PCB revs: SNS-CPU-GPM; SNS-CPU-RGB; SNS-CPU-APU; SNS-CPU-1CHIP; SNN-CPU (Smaller, redesigned SNES. We offer a more suitable kit for the SNES Jr., see the related items).
Chips & ICs
SHVC-CPU-01 (1990)
- U1: CPU: S-CPU
- U2: S-PPU1
- U3: S-PPU2 OR S-PPU2 B
- U4, U5: RAM: 32K x 8 Pseudo-Static RAM: LH52A256N-10LL, HY62256ALJ-10
- U6: S-WRAM
- U7: RGB Encoder: BA6592F or S-ENC
- U8: CIC: F411
- U9: Reset / CIC circuit: 74HCU04
- U10: LM358 or 10358
- U11: T529D
- U12: +5V Regulator: 7805
SHVC-SOUND
- IC1: Audio Processor: S-SMP
- IC2: Audio DSP: S-DSP
- IC3, IC4: Audio SRAM: 32K x 8 Pseudo-Static RAM: HM9453100FP
- IC5: Audio D/A Converter: NEC µPD6376
- IC6: OpAmp: 2904
SNS-CPU-GPM-01 (1992)
- U1: S-CPU A
- U2: S-PPU1
- U3: S-PPU2 B
- U4: RAM: 32K x 8 Pseudo-Static RAM: MS62256CL-10FC
- U5: RAM: 32K x 8 Pseudo-Static RAM: MS62256CL-10FC
- U6: S-WRAM
- U7: RGB Encoder: S-ENC
- U8: CIC: F411A
- U9: Reset / CIC circuit: 74HCU04
- U10: LM324
- U11: T529D
- U12: +5V Regulator: 7805
- U13: S-SMP
- U14: S-DSP A
- U15: Audio PSRAM: 32K x 8 Pseudo-Static RAM: LH5P832N-12T
- U16: Audio PSRAM: 32K x 8 Pseudo-Static RAM: LH5P832N-12T
- U17: Audio D/A Converter: NEC µPD6376
SNS-CPU-GPM-02 (1993)
- U1: S-CPU B
- U2: S-PPU1
- U3: S-PPU2 C
- U4: RAM: 32K x 8 Pseudo-Static RAM: MS62256CL-10FC
- U5: RAM: 32K x 8 Pseudo-Static RAM: MS62256CL-10FC
- U6: S-WRAM A
- U7: RGB Encoder: S-ENC
- U8: CIC: F411A
- U9: Reset / CIC circuit: 74HCU04
- U10: LM324
- U12: +5V Regulator: 7805
- U13: S-SMP
- U14: S-DSP A
- U15: Audio PSRAM: 32K x 8 Pseudo-Static RAM: MCM51L832AF10
- U16: Audio PSRAM: 32K x 8 Pseudo-Static RAM: MCM51L832AF10
- U17: Audio D/A Converter: NEC µPD6376
Snes Rgb Cables
SNS-CPU-RGB-01 (1994)
- U1: CPU: S-CPU B
- U2: S-PPU1
- U3: S-PPU2 C
- U4: RAM: 32K x 8 Pseudo-Static RAM: GM76C256ALLFW70
- U5: RAM: 32K x 8 Pseudo-Static RAM: GM76C256ALLFW70
- U6: S-WRAM
- U7: RGB Encoder: BA6595F
- U8: CIC: F411A
- U9: Reset / CIC circuit: 74HCU04
- U10: S-MIX A
- U11: T529D
- U12: +5V Regulator: 7805
- U13: S-SMP
- U14: S-DSP A
- U15: Audio PSRAM: 32K x 8 Pseudo-Static RAM: HM9453100FP
- U16: Audio PSRAM: 32K x 8 Pseudo-Static RAM: HM9453100FP
- U17: Audio D/A Converter: NEC µPD6376
SNS-CPU-RGB-02 (1995)
- U1: CPU: S-CPU B
- U2: S-PPU1
- U3: S-PPU2 C
- U4: RAM: 32K x 8 Pseudo-Static RAM: GM76C256ALLFW70
- U5: RAM: 32K x 8 Pseudo-Static RAM: GM76C256ALLFW70
- U6: S-WRAM B
- U7: RGB Encoder: S-RGB
- U8: CIC: F411B
- U9: Reset / CIC circuit: 74HCU04
- U10: S-MIX A
- U11: T529D
- U12: +5V Regulator: 7805
- U13: S-SMP
- U14: S-DSP A
- U15: Audio PSRAM: 32K x 8 Pseudo-Static RAM: LH5P832N-12Y
- U16: Audio PSRAM: 32K x 8 Pseudo-Static RAM: LH5P832N-12Y
- U17: Audio D/A Converter: NEC 6379A
SNS-CPU-APU-01 (1995)
- U1: CPU: S-CPU B
- U2: S-PPU1
- U3: S-PPU2 C
- U4: RAM: 32K x 8 Pseudo-Static RAM: MS62256CL-10FC
- U5: RAM: 32K x 8 Pseudo-Static RAM: MS62256CL-10FC
- U6: S-WRAM B
- U7: RGB Encoder: S-RGB
- U8: CIC: F411B
- U9: Reset / CIC circuit: 74HCU04
- U10: S-MIX
- U11: T529D
- U12: +5V Regulator: 7805
- U13: Audio Processor: S-APU
- U14: Audio D/A Converter: 6379A
SNS-CPU-1CHIP-02 (1995)
- U1: S-CPUN A
- U2: Audio Processor: S-APU
- U3: S-WRAM A or S-WRAM B
- U4: RAM: 32K x 8 Pseudo-Static RAM: GM76C256BLLFW70 or CXK58257MB-10LL
- U5: RAM: 32K x 8 Pseudo-Static RAM: GM76C256BLLFW70 or CXK58257MB-10LL
- U6: Audio D/A Converter: 6379A
- U7: RGB Encoder: S-RGB
- U8: CIC: F411B
- U9: +5V Regulator: 7805
- U10: S-MIX or S-MIX A
- U11: T529D
SNN-CPU-01 (1997) (Mini)
- U1: S-CPUN A
- U2: Audio Processor: S-APU
- U3: S-WRAM B
- U4: RAM: 32K x 8 Pseudo-Static RAM: MB84256C-70LL
- U5: RAM: 32K x 8 Pseudo-Static RAM: MB84256C-70LL
- U6: Audio D/A Converter: 6379A
- U7: RGB Encoder: S-RGB
- U8: CIC: F411B
- U9: +5V Regulator: 7805
- U10: S-MIX
Schematics
Power supply, reset circuit, CIC
CPU, Controller Ports, RAM
PPU, Controller
RGB Processor
Audio DSP
Multiple revision NTSC schematic from http://wiki.superfamicom.org
PAL SNSP-CPU-01 / SNSP-CPU-02 by arzi84 [1]
Super Game Boy SNES Cartridge
Capacitor Lists
NTSC Capacitor Lists
SHVC-CPU-01
SNS-CPU-GPM-01, SNS-CPU-GPM-02
SNS-CPU-RGB-01, SNS-CPU-RGB-02, SNS-CPU-APU-01
SNS-CPU-1CHIP-01, SNS-CPU-1CHIP-02, SNS-CPU-1CHIP-03
SNN-CPU-01 (Smaller, redesigned SNES)
PAL Capacitor Lists
SNSP-CPU-01
SNSP-CPU-02
Free family tree for mac. Almost identical to the SNSP-CPU-01, except C59 has been changed to bipolar.
SNSP-CPU-1CHIP-01 and SNSP-CPU-1CHIP-02
Control Deck Diagnostic Table
Transcribed from Nintendo service literature. Appears to be specific to SHVC-CPU boards, but these tips likely have application to other revisions too.
Before attempting any repairs to the control deck, disassemble the unit and thoroughly inspect thePCB. Look for damaged/missing components or traces, solder defects, and dirt orcorrosion. Do not attempt to clean 62 pin connectors; they should be replaced.
- Malfunction
- Probable Cause (In order of priority)
- Solid color screen
- Defective 62 pin connector
- Defective Sound Module
- Poor solder
- Defective U1 (CPU)
- Defective U3 (PPU2)
- Defective U6 (WRAM)
- Defective U2 (PPU1)
- Defective U7 (RGB encoder)
- Defective X1 (21 MHz oscillator)
- Defective U8 (CIC)
- Scrambled video images
- Defective 62 pin connector
- Poor solder
- Defective U3 (PPU2)
- Defective U1 (CPU)
- Defective U2 (PPU1)
- Defective U4 or U5 (256K S-RAM)
- Distorted or no sound
- Defective Sound Module
- Defective connector P5
- Defective U1 (CPU)
- Defective U10 (Amp)
- Defective Q18
- No Reset
- Defective US (CIC)
- Defective X2 (4MHz oscillator)
- Defective U9 (74HCU04)
- Poor or no color
- Defective TC1 - Master clock frequency should be adjusted to = 21.47727 Mhz
- Defective U3 (PPU2)
- Defective U7 (RGB Encoder)
- Defective X1 (21 MHz oscillator)
- No power
- Defective F1 (1.5A fuse)
- Defective D1
- Defective T1 (Line Filter)
- Defective U12 (Regulator 7805}
- Defective VA1 (Surge Absorber)
- Defective Q18
- Defective P3 (Power Switch}
Snes Mini Rgb Mod
- Snowy screen
- Defective RF Modulator
- Intermittent or no controller operation
- Defective Front Unit PCB assembly
- Defective FCC Harness (flat cable)
- Defective connector P2
- Defective Ul (CPU)
- Frozen screen/Erratic program operation
- Defective 62 pin connector
- Poor solder
- Defective I1 (CPU)
- Defective U3 (PPU2)
- Defective U2 (PPU1)
Snes Rgb Output
- Ejector will not properly eject game paks
- Control Deck utilizes an early version ejector (Replace upon customer complaint ONLY)
- Defective ejector
Two television incompatibilities have been identified with early production Super NES Control Decks. If the customer complains of a television screen 'bounce', or a loss of color, a PPU2 replacement or a PCB warranty exchange may be required (refer to Service Bulletin #91252).
Vertical Line
On certain combinations of SNES models and TVs/Monitors, a bright vertical line may be visible in the middle of the screen.
The cause seems to be a voltage drop caused by insufficient bypass capacitors.
All of our kits include a 470uF cap to place across the voltage regulator to help diminish the appearance of this line.
Example install - trim the cap leads and form the ends into hooks. Then solder in place with the stripe on the center terminal, and non-striped side on the output (right side)
S-Video Output for SNES 2 / Junior (SNN-CPU)
Y/C video exists at the RGB encoder on the SNES 2 units, but Nintendo decided not to connect it to the Multi AV port. Luckily it's easy to add a few components and restore S-video!
- Parts:
- 2x 75Ω resistors
- 220µf @ 6.3v Capacitor
- 0.1µf Ceramic Capacitor
- Luma:
- Positive side of 220µf connects to Luma (pin 17) on RGB chip
- Negative side to 75Ω resistor
- Other side of resistor to pin 7 at MultiAV
- Chroma:
- One side of 0.1µf capacitor to Chroma (pin 12) on RGB chip
- Other side of 0.1µf capacitor to second 75Ω resistor
- Other side of resistor to pin 8 at MultiAV
Y/C connections at the S-RGB IC. Note the close proximity of the heat sink - plan your component location to prevent contact with the heat sink.
Y/C connections at the Multi AV port.
Components can be directly soldered and then held down with tape or glue
Resistors with leads formed into J hooks and directly soldered. Wire passes through existing hole in PCB.
Overview of this particular install. If you not comfortable soldering components directly to the RGB IC, the large unoccupied space where the RF modulator was planned (but never installed) is a great place for them.
1CHIP-03 CSYNC Restore
Nintendo removed CSYNC from the MultiAV connector on revision 1CHIP-03. CSYNC can be restored to original specs by addeding the following components:
Snes Jr Rgb Mod
(Colors are to quickly reference the parts in our kit)
- Q1: C2412
- R9: 1.8kΩ (Blue)
- R10: 3.3kΩ (Green)
- R11: 300Ω (Yellow)
- R12: 100Ω (Red)
- C46: 330pF (near MultiAV port)
I did this a while ago and thought it might be interesting. The 1CHIP SNES (1995~), with S-CPU, S-PPU1 and S-PPU2 united in a single chip (S-CPUN), has vastly improved picture quality over the old versions. Most notably the rising edges of the output signal are much steeper, resulting in sharper dark->bright transitions.
This is not an issue of the video encoder, it looks exactly the same via RGB (save for color balance).
Here are some examples to show the difference.
Sorry the pictures turned out quite big but it's important not to lose any detail here. ;)
The images below show three frame captures from a 'regular' SNES. Roll over them to see the 1CHIP version.
