Genesis:Jailbar Fix: Difference between revisions
(Created page with "Genesis units have issues with interference in the video signals, which often appear as jailbars on the RGB image. There are various methods to lessen or remove jailbars. == Subcarrier Pin Lift == thumb|Subcarrier pin on Sega 315-5313. thumb|Subcarrier pin on Sega 315-5960. This method effectively disconnects composite video, which removes a source of interference in the RGB signals. To do this, sim...") |
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== Subcarrier Pin Lift == | == Subcarrier Pin Lift == | ||
[[File:Sega 315-5313 Pin Lift.png|thumb|Subcarrier pin on Sega 315-5313.]] [[File:Sega 315-5960_Pin_Lift.png|thumb|Subcarrier pin on Sega 315-5960.]] | [[File:Sega 315-5313 Pin Lift.png|thumb|Subcarrier pin on Sega 315-5313.]] [[File:Sega 315-5960_Pin_Lift.png|thumb|Subcarrier pin on Sega 315-5960.]] [[File:SonyCXAPin-6Lifted.png|thumb|Pin 6 on the Sony CXA1145P.]] | ||
This method effectively disconnects composite video, which removes a source of interference in the RGB signals. To do this, simply locate the pin, heat the pin with a soldering iron, and use metal tweezers to lift the pin so it no longer makes contact with the motherboard or either neighboring pins. | This method effectively disconnects composite video, which removes a source of interference in the RGB signals. To do this, simply locate the pin, heat the pin with a soldering iron, and use metal tweezers to lift the pin so it no longer makes contact with the motherboard or either neighboring pins. | ||
Revision as of 04:08, 3 April 2023
Genesis units have issues with interference in the video signals, which often appear as jailbars on the RGB image. There are various methods to lessen or remove jailbars.
Subcarrier Pin Lift
This method effectively disconnects composite video, which removes a source of interference in the RGB signals. To do this, simply locate the pin, heat the pin with a soldering iron, and use metal tweezers to lift the pin so it no longer makes contact with the motherboard or either neighboring pins.
Location of the pin is dependent on what model VDP is on your board:
- Sega 315-5313: Pin 50 (15th down from the top-right corner).
- Sega 315-5960: Pin 153 (8th up from the bottom-left corner).
After lifting the pin, test your console to ensure it is still functional. If it is not, inspect the neighboring pins to make sure you didn't accidentally lift them.
Subcarrier Bypass Board
Created by Tianfeng, this board (download) sits between the lifted subcarrier pin on the VDP and
- Lift the subcarrier pin on the VDP as described in the section above.
- Lift pin 6 on the Sony CXA1145P.
- ..................
Triple Bypass
This mod effectively moves the audio and video circuitry off of the motherboard, providing much cleaner RGB signals. More information and installation guides can be found on the Genesis:Triple_Bypass Mod page.