jdavis6809 Posted May 11, 2021 Share Posted May 11, 2021 Hello, Looking for service manual / circuits for PAL machine (have NTSC version ) I have both NTSC and PAL machines Googling shows nothing ? regards john davis UK Quote Link to comment Share on other sites More sharing options...
humeur Posted May 11, 2021 Share Posted May 11, 2021 Hello, What changes is already the vdp, after NTSC comes out of composite video 5 pin connector. All the diagrams are on the net. Jean louis Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted May 11, 2021 Share Posted May 11, 2021 As @humeur said, the only changes are in the video output circuitry--and those changes are minor (VDP chip, a couple of straps, a resistor and a capacitor, and the change to a 6-pin DIN connector for the output). Those changes are readily identified. 1 Quote Link to comment Share on other sites More sharing options...
jdavis6809 Posted May 22, 2021 Author Share Posted May 22, 2021 hello, the only PAL circuit have is a one page PDF ? see attached regards john davis UK 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted May 22, 2021 Share Posted May 22, 2021 Looks about right--none of the rest of the circuitry changes. . .and even the physical motherboards are the same, with just a few components and wire links that change positions depending on PAL or NTSC output requirements. 1 Quote Link to comment Share on other sites More sharing options...
ti99iuc Posted May 22, 2021 Share Posted May 22, 2021 (edited) @jdavis6809 this is an original doc by Texas Instruments if it can clarify or confirm infos. Edited May 22, 2021 by ti99iuc 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.