Thread
Reddish hue around Color Classic screen
I would tap on the board while its on with an insulated handle/tool, and tap on the CRT board as well, and see if the problem comes in goes.
If its stuck and doesnt come back, Then the last resort is working the pots back and forth.
Worst case scenario is the video amplifier IC has failed, and I can almost certainly guarantee that you have to get those from a chinese parts broker house.
If its stuck and doesnt come back, Then the last resort is working the pots back and forth.
Worst case scenario is the video amplifier IC has failed, and I can almost certainly guarantee that you have to get those from a chinese parts broker house.
A quarter inch border is the recommended size to set your horizontal and vertical scan to. Any larger than that is a little much voltage for the deflection circuits to take - and that's when they were new.
https://68kmla.org/forums/index.php?/topic/25644-color-classic-now-with-a-purple-screen/?p=273088
slightly mechanically work your pots, there is R G B pots back there and they need to be slightly worked back and forth ( when having color issues )
return the pot back to its original position. just work it + / - a little. see if the proper color returns.
The Macintosh B+W Classic/Classic II AB, has the same anomaloly sometimes.
where you will get oddness in the screen… and such. the pots need to be moved back and forth.
slightly mechanically work your pots, there is R G B pots back there and they need to be slightly worked back and forth ( when having color issues )
return the pot back to its original position. just work it + / - a little. see if the proper color returns.
The Macintosh B+W Classic/Classic II AB, has the same anomaloly sometimes.
where you will get oddness in the screen… and such. the pots need to be moved back and forth.