(Created page with "You may encounter an issue where your screen becomes scrambled as if sync is lost. This is a hardware issue with your SNES having a weak clock signal. Early models of the FXPak Pro may make this issue more prevalent, as described here. === Symptoms === Video scrambling as shown below: <youtube>https://www.youtube.com/watch?v=9i70w7sOgXg</youtube> === Solution === Apply a Dual Frequency Oscillator (DFO) mod to your...")
You may encounter an issue where your screen becomes scrambled as if sync is lost. This is a hardware issue with your SNES having a weak clock signal. Early models of the FXPak Pro may make this issue more prevalent, [[SNES:FXPak Pro (SD2SNES)#Scrambled Screen Issue|as described here]].
You may encounter an issue where your screen becomes scrambled or glitchy as if sync is lost. This is a hardware issue with the SHVC-CPU-01 SNES having a weak clock signal. Titles that use enhancement chips, and early models of the SD2SNES and FXPak Pro may make this issue more prevalent, [[SNES:FXPak Pro (SD2SNES)#Scrambled Screen Issue|as described here]].
File:SNES SFA2 glitch.png|Weak clock signal causing horizontal lines to appear
File:SNES Super Mario Kart glitching.png
File:SNES Star Fox glitching.png
</gallery>
=== Solution ===
=== Solutions ===
Apply a Dual Frequency Oscillator (DFO) mod to your SNES or a de-jitter mod. Either one will strengthen the sync signal of your SNES to normal levels.
* Apply a Dual Frequency Oscillator (DFO) mod to your SNES or a de-jitter mod. Either one will strengthen the clock signal of your SNES to normal levels.
* Alternatively, removing the capacitor at C5 and bridging R6 will also work to strengthen the clock signal.[[File:Stock circuit.png|none|thumb|Locate C5 and R6 on the underside of the board, towards the front]][[File:Circuit mods.png|none|thumb|Remove C5 and R6, and bridge R6, leaving C5 unpopulated]]
Latest revision as of 02:17, 10 September 2024
You may encounter an issue where your screen becomes scrambled or glitchy as if sync is lost. This is a hardware issue with the SHVC-CPU-01 SNES having a weak clock signal. Titles that use enhancement chips, and early models of the SD2SNES and FXPak Pro may make this issue more prevalent, as described here.
Weak clock signal causing horizontal lines to appear
Solutions
Apply a Dual Frequency Oscillator (DFO) mod to your SNES or a de-jitter mod. Either one will strengthen the clock signal of your SNES to normal levels.
Alternatively, removing the capacitor at C5 and bridging R6 will also work to strengthen the clock signal.
Locate C5 and R6 on the underside of the board, towards the front
Remove C5 and R6, and bridge R6, leaving C5 unpopulated
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