Differences

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+====== PlayStation 1 Sync ======
+The purpose of this page is to show where to find the sync signals from PlayStation 1 motherboards so one does not have to use a sync chip.
+Unlike the very complicated PlayStation 2, the PlayStation 1 units are very easy to hack. Still, care must be taken whenever one opens up a game console unit.
+The following pictures are from a SCPH-7501 unit (Version unknown) motherboard and a SCPH-101 (Version unknown) motherboard. The Composite Sync circuit comes from Viletim!.
+Being that this is a Wiki page you are more than welcome to add any information that will improve the quality of information provided here.
+{{ av:largerainbowline.gif }}
+{{ av:ps1.jpg }}
+===== Standard PlayStation 1 Unit =====
+In the picture below you will see the main chip, the CXD8561, and the video chip, the A2106. You will also see a red rectangle. The sync signals are within this outline.
+{{ av:ps1sync1.jpg }}
+The picture below shows exactly where the Horizontal, Vertical, and Composite Sync signals can be found at the top of the motherboard (within the red rectangle).
+{{ av:ps1sync2.jpg }}
+However, there is also another, and better, place to acquire the signals and that is underneath the motherboard as shown in the picture below.
+{{ av:ps1sync3.jpg }}
+On the Playstation SCPH-5001 you can get the composite sync signal from the Sony CXA1645M encoder (pin 20), which is on the bottom side of the mainboard PCB.
+{{ av:psx_scph5001_compsync.jpg }}
+{{ av:largerainbowline.gif }}
+{{ av:psone.jpg }}
+===== Newer PSOne Unit =====
+The smaller PSOne unit uses the exact same chips as in the older model and in the same orientation. So the sync can be easily found and used.
+In the picture below you will find where to tap the Horizontal and Vertical Syncs. You will note that there is no Composite Sync to be easily tapped into this time.
+{{ av:psonesync.jpg }}
+You can make your own Composite Sync signal with two very simple components. First, run the Horizontal Sync through a 1N4148 diode (very common - can be found at Radio Shack). Second, run the Vertical Sync through a 820 Ohm resistor. Once the two signals have been conditioned this way then you can simply splice them together.
+----
+Author and pictures: [[http://nfg.2y.net/forum/index.php?showuser=171|RARusk]]