OSSC Quick Start Guide VideoGamePerfection.com
Troubleshooting
Symptom Possible Cause Solution
Certain Genesis/Megadrive games
(Sonic 2, Fix it Felix) do not work
Coast values need changing Set H-PLL coast pre 3 and post 3
Image has a vertical flicker/shimmer
effect
Interlace source connected This is a normal side effect of lag-free
deinterlacing, no action is required
Image unstable and/or flickers on and
off
Nintendo SNES/Super Famicom
console connected
Try a different display or install a de-
jitter board to your console.
Horizontal jitter/wobble on image Fine tuning required Try adjusting low pass filter settings.
See the wiki for recommendations
Missing pixels in the image Wrong line triple mode selected Use generic 4:3 or Generic 16:9 line
triple mode instead
No audio Display incompatibility Use a different display or choose a
different line multiplication mode
No audio Sample mode incompatible Change the Down-sampling option
under “Audio options” to 2x
No audio on AV2 Audio toggle switch set to input mode Change audio toggle switch (next to
HDMI connector)
No image Sync mode set wrong Press the source button again to
change sync mode. Most common
sync type is RGBs for SCART, YPbPr
for component and RGBHV for
DSub15/VGA
No image Line triple/quadruple/quintuple
enabled
Switch to line double mode. Other
modes are not compatible with all
displays
No image HDMI/DVI handshake failed Power cycle the OSSC
No image Unusual sync signal Power off OSSC and your source.
Power on the OSSC and select the
correct input, then power on your
source
No image and LCD says NO SYNC Source not powered on Check power to source device
No image and LCD says NO SYNC Source not outputting RGB or YPbPr Make sure your source device outputs
RGB and your SCART cable is wired
for RGB
OSSC Resets/reboots Power supply not suitable Use a different PSU with at least 1
amp of current. You can purchase a
suitable PSU at
Videogameperfection.com
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